mirror of
https://github.com/securego/gosec.git
synced 2024-12-25 12:05:52 +00:00
709ed1ba65
Currently, rule G204 warns you about every single use of the functions syscall.Exec, os.exec.CommandContext and os.Exec.Command. This can create false positives and it's not accurate because you can use those functions with perfectly secure arguments like hardcoded strings for example. With this change, G204 will warn you in 3 cases when passing arguments to a function which starts a new process the arguments: 1) are variables initialized by calling another function 2) are functions 3) are command-line arguments or environmental variables Closes: https://github.com/securego/gosec/issues/338 Signed-off-by: Martin Vrachev <mvrachev@vmware.com>
1219 lines
25 KiB
Go
1219 lines
25 KiB
Go
package testutils
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import "github.com/securego/gosec"
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// CodeSample encapsulates a snippet of source code that compiles, and how many errors should be detected
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type CodeSample struct {
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Code []string
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Errors int
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Config gosec.Config
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}
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var (
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// SampleCodeG101 code snippets for hardcoded credentials
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SampleCodeG101 = []CodeSample{{[]string{`
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package main
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import "fmt"
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func main() {
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username := "admin"
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password := "f62e5bcda4fae4f82370da0c6f20697b8f8447ef"
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fmt.Println("Doing something with: ", username, password)
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}`}, 1, gosec.NewConfig()}, {[]string{`
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// Entropy check should not report this error by default
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package main
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import "fmt"
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func main() {
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username := "admin"
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password := "secret"
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fmt.Println("Doing something with: ", username, password)
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}`}, 0, gosec.NewConfig()}, {[]string{`
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package main
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import "fmt"
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var password = "f62e5bcda4fae4f82370da0c6f20697b8f8447ef"
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func main() {
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username := "admin"
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fmt.Println("Doing something with: ", username, password)
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}`}, 1, gosec.NewConfig()}, {[]string{`
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package main
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import "fmt"
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const password = "f62e5bcda4fae4f82370da0c6f20697b8f8447ef"
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func main() {
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username := "admin"
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fmt.Println("Doing something with: ", username, password)
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}`}, 1, gosec.NewConfig()}, {[]string{`
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package main
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import "fmt"
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const (
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username = "user"
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password = "f62e5bcda4fae4f82370da0c6f20697b8f8447ef"
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)
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func main() {
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fmt.Println("Doing something with: ", username, password)
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}`}, 1, gosec.NewConfig()}, {[]string{`
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package main
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var password string
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func init() {
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password = "f62e5bcda4fae4f82370da0c6f20697b8f8447ef"
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}`}, 1, gosec.NewConfig()}, {[]string{`
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package main
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const (
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ATNStateSomethingElse = 1
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ATNStateTokenStart = 42
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)
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func main() {
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println(ATNStateTokenStart)
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}`}, 0, gosec.NewConfig()}, {[]string{`
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package main
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const (
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ATNStateTokenStart = "f62e5bcda4fae4f82370da0c6f20697b8f8447ef"
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)
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func main() {
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println(ATNStateTokenStart)
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}`}, 1, gosec.NewConfig()}}
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// SampleCodeG102 code snippets for network binding
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SampleCodeG102 = []CodeSample{
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// Bind to all networks explicitly
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{[]string{`
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package main
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import (
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"log"
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"net"
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)
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func main() {
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l, err := net.Listen("tcp", "0.0.0.0:2000")
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if err != nil {
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log.Fatal(err)
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}
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defer l.Close()
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}`}, 1, gosec.NewConfig()},
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// Bind to all networks implicitly (default if host omitted)
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{[]string{`
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package main
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import (
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"log"
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"net"
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)
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func main() {
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l, err := net.Listen("tcp", ":2000")
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if err != nil {
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log.Fatal(err)
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}
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defer l.Close()
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}`}, 1, gosec.NewConfig()},
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// Bind to all networks indirectly through a parsing function
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{[]string{`
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package main
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import (
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"log"
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"net"
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)
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func parseListenAddr(listenAddr string) (network string, addr string) {
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return "", ""
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}
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func main() {
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addr := ":2000"
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l, err := net.Listen(parseListenAddr(addr))
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if err != nil {
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log.Fatal(err)
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}
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defer l.Close()
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}`}, 1, gosec.NewConfig()},
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// Bind to all networks indirectly through a parsing function
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{[]string{`
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package main
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import (
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"log"
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"net"
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)
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const addr = ":2000"
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func parseListenAddr(listenAddr string) (network string, addr string) {
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return "", ""
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}
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func main() {
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l, err := net.Listen(parseListenAddr(addr))
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if err != nil {
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log.Fatal(err)
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}
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defer l.Close()
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}`}, 1, gosec.NewConfig()},
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{[]string{`
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package main
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import (
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"log"
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"net"
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)
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const addr = "0.0.0.0:2000"
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func main() {
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l, err := net.Listen("tcp", addr)
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if err != nil {
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log.Fatal(err)
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}
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defer l.Close()
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}`}, 1, gosec.NewConfig()},
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}
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// SampleCodeG103 find instances of unsafe blocks for auditing purposes
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SampleCodeG103 = []CodeSample{
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{[]string{`
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package main
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import (
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"fmt"
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"unsafe"
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)
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type Fake struct{}
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func (Fake) Good() {}
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func main() {
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unsafeM := Fake{}
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unsafeM.Good()
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intArray := [...]int{1, 2}
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fmt.Printf("\nintArray: %v\n", intArray)
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intPtr := &intArray[0]
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fmt.Printf("\nintPtr=%p, *intPtr=%d.\n", intPtr, *intPtr)
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addressHolder := uintptr(unsafe.Pointer(intPtr)) + unsafe.Sizeof(intArray[0])
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intPtr = (*int)(unsafe.Pointer(addressHolder))
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fmt.Printf("\nintPtr=%p, *intPtr=%d.\n\n", intPtr, *intPtr)
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}`}, 3, gosec.NewConfig()}}
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// SampleCodeG104 finds errors that aren't being handled
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SampleCodeG104 = []CodeSample{
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{[]string{`
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package main
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import "fmt"
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func test() (int,error) {
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return 0, nil
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}
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func main() {
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v, _ := test()
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fmt.Println(v)
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}`}, 0, gosec.NewConfig()}, {[]string{`
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package main
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import (
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"io/ioutil"
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"os"
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"fmt"
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)
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func a() error {
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return fmt.Errorf("This is an error")
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}
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func b() {
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fmt.Println("b")
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ioutil.WriteFile("foo.txt", []byte("bar"), os.ModeExclusive)
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}
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func c() string {
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return fmt.Sprintf("This isn't anything")
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}
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func main() {
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_ = a()
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a()
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b()
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c()
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}`}, 2, gosec.NewConfig()}, {[]string{`
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package main
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import "fmt"
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func test() error {
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return nil
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}
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func main() {
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e := test()
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fmt.Println(e)
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}`}, 0, gosec.NewConfig()}, {[]string{`
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// +build go1.10
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package main
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import "strings"
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func main() {
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var buf strings.Builder
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_, err := buf.WriteString("test string")
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if err != nil {
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panic(err)
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}
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}`, `
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package main
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func dummy(){}
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`}, 0, gosec.NewConfig()}, {[]string{`
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package main
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import (
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"io/ioutil"
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"os"
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"fmt"
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)
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func a() {
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fmt.Println("a")
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ioutil.WriteFile("foo.txt", []byte("bar"), os.ModeExclusive)
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}
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func main() {
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a()
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}`}, 0, gosec.Config{"G104": map[string]interface{}{"io/ioutil": []interface{}{"WriteFile"}}}}}
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// SampleCodeG104Audit finds errors that aren't being handled in audit mode
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SampleCodeG104Audit = []CodeSample{
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{[]string{`
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package main
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import "fmt"
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func test() (int,error) {
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return 0, nil
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}
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func main() {
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v, _ := test()
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fmt.Println(v)
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}`}, 1, gosec.Config{gosec.Globals: map[gosec.GlobalOption]string{gosec.Audit: "enabled"}}}, {[]string{`
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package main
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import (
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"io/ioutil"
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"os"
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"fmt"
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)
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func a() error {
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return fmt.Errorf("This is an error")
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}
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func b() {
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fmt.Println("b")
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ioutil.WriteFile("foo.txt", []byte("bar"), os.ModeExclusive)
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}
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func c() string {
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return fmt.Sprintf("This isn't anything")
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}
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func main() {
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_ = a()
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a()
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b()
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c()
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}`}, 3, gosec.Config{gosec.Globals: map[gosec.GlobalOption]string{gosec.Audit: "enabled"}}}, {[]string{`
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package main
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import "fmt"
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func test() error {
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return nil
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}
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func main() {
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e := test()
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fmt.Println(e)
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}`}, 0, gosec.Config{gosec.Globals: map[gosec.GlobalOption]string{gosec.Audit: "enabled"}}}, {[]string{`
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// +build go1.10
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package main
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import "strings"
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func main() {
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var buf strings.Builder
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_, err := buf.WriteString("test string")
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if err != nil {
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panic(err)
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}
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}`, `
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package main
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func dummy(){}
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`}, 0, gosec.Config{gosec.Globals: map[gosec.GlobalOption]string{gosec.Audit: "enabled"}}}}
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// SampleCodeG106 - ssh InsecureIgnoreHostKey
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SampleCodeG106 = []CodeSample{{[]string{`
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package main
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import (
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"golang.org/x/crypto/ssh"
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)
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func main() {
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_ = ssh.InsecureIgnoreHostKey()
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}`}, 1, gosec.NewConfig()}}
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// SampleCodeG107 - SSRF via http requests with variable url
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SampleCodeG107 = []CodeSample{{[]string{`
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package main
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import (
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"net/http"
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"io/ioutil"
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"fmt"
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"os"
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"bufio"
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)
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func main() {
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in := bufio.NewReader(os.Stdin)
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url, err := in.ReadString('\n')
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if err != nil {
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panic(err)
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}
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resp, err := http.Get(url)
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if err != nil {
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panic(err)
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}
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defer resp.Body.Close()
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body, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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panic(err)
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}
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fmt.Printf("%s", body)
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}`}, 1, gosec.NewConfig()}, {[]string{`
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package main
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import (
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"fmt"
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"net/http"
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)
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const url = "http://127.0.0.1"
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func main() {
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resp, err := http.Get(url)
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if err != nil {
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fmt.Println(err)
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}
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fmt.Println(resp.Status)
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}`}, 0, gosec.NewConfig()}}
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// SampleCodeG201 - SQL injection via format string
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SampleCodeG201 = []CodeSample{
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{[]string{`
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// Format string without proper quoting
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package main
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import (
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"database/sql"
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"fmt"
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"os"
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)
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func main(){
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db, err := sql.Open("sqlite3", ":memory:")
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if err != nil {
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panic(err)
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}
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q := fmt.Sprintf("SELECT * FROM foo where name = '%s'", os.Args[1])
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rows, err := db.Query(q)
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if err != nil {
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panic(err)
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}
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defer rows.Close()
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}`}, 1, gosec.NewConfig()}, {[]string{`
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// Format string false positive, safe string spec.
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package main
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import (
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"database/sql"
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"fmt"
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"os"
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)
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func main(){
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db, err := sql.Open("sqlite3", ":memory:")
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if err != nil {
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panic(err)
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}
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q := fmt.Sprintf("SELECT * FROM foo where id = %d", os.Args[1])
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rows, err := db.Query(q)
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if err != nil {
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panic(err)
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}
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defer rows.Close()
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}`}, 0, gosec.NewConfig()}, {[]string{`
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// Format string false positive
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package main
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import (
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"database/sql"
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)
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const staticQuery = "SELECT * FROM foo WHERE age < 32"
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func main(){
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db, err := sql.Open("sqlite3", ":memory:")
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if err != nil {
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panic(err)
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}
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rows, err := db.Query(staticQuery)
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if err != nil {
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panic(err)
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}
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defer rows.Close()
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}`}, 0, gosec.NewConfig()}, {[]string{`
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// Format string false positive, quoted formatter argument.
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package main
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import (
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"database/sql"
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"fmt"
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"os"
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"github.com/lib/pq"
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)
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func main(){
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db, err := sql.Open("postgres", "localhost")
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if err != nil {
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panic(err)
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}
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q := fmt.Sprintf("SELECT * FROM %s where id = 1", pq.QuoteIdentifier(os.Args[1]))
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rows, err := db.Query(q)
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if err != nil {
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panic(err)
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}
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defer rows.Close()
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}`}, 0, gosec.NewConfig()}, {[]string{`
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// false positive
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package main
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import (
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"database/sql"
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"fmt"
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)
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const Table = "foo"
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func main(){
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db, err := sql.Open("sqlite3", ":memory:")
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if err != nil {
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panic(err)
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}
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q := fmt.Sprintf("SELECT * FROM %s where id = 1", Table)
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rows, err := db.Query(q)
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if err != nil {
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panic(err)
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}
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defer rows.Close()
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}`}, 0, gosec.NewConfig()}, {[]string{`
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package main
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import (
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"fmt"
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)
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func main(){
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fmt.Sprintln()
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}`}, 0, gosec.NewConfig()}}
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|
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// SampleCodeG202 - SQL query string building via string concatenation
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SampleCodeG202 = []CodeSample{
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{[]string{`
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package main
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import (
|
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"database/sql"
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"os"
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)
|
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func main(){
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db, err := sql.Open("sqlite3", ":memory:")
|
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if err != nil {
|
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panic(err)
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}
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rows, err := db.Query("SELECT * FROM foo WHERE name = " + os.Args[1])
|
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if err != nil {
|
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panic(err)
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}
|
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defer rows.Close()
|
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}`}, 1, gosec.NewConfig()}, {[]string{`
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// false positive
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package main
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import (
|
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"database/sql"
|
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)
|
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var staticQuery = "SELECT * FROM foo WHERE age < "
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func main(){
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db, err := sql.Open("sqlite3", ":memory:")
|
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if err != nil {
|
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panic(err)
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}
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rows, err := db.Query(staticQuery + "32")
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if err != nil {
|
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panic(err)
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}
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defer rows.Close()
|
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}`}, 0, gosec.NewConfig()}, {[]string{`
|
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package main
|
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import (
|
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"database/sql"
|
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)
|
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const age = "32"
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var staticQuery = "SELECT * FROM foo WHERE age < "
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func main(){
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db, err := sql.Open("sqlite3", ":memory:")
|
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if err != nil {
|
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panic(err)
|
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}
|
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rows, err := db.Query(staticQuery + age)
|
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if err != nil {
|
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panic(err)
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}
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defer rows.Close()
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}
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|
`}, 0, gosec.NewConfig()}, {[]string{`
|
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package main
|
|
const gender = "M"
|
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`, `
|
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package main
|
|
import (
|
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"database/sql"
|
|
)
|
|
const age = "32"
|
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var staticQuery = "SELECT * FROM foo WHERE age < "
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func main(){
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db, err := sql.Open("sqlite3", ":memory:")
|
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if err != nil {
|
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panic(err)
|
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}
|
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rows, err := db.Query("SELECT * FROM foo WHERE gender = " + gender)
|
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if err != nil {
|
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panic(err)
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}
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defer rows.Close()
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}
|
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`}, 0, gosec.NewConfig()}}
|
|
|
|
// SampleCodeG203 - Template checks
|
|
SampleCodeG203 = []CodeSample{
|
|
{[]string{`
|
|
// We assume that hardcoded template strings are safe as the programmer would
|
|
// need to be explicitly shooting themselves in the foot (as below)
|
|
package main
|
|
import (
|
|
"html/template"
|
|
"os"
|
|
)
|
|
const tmpl = ""
|
|
func main() {
|
|
t := template.Must(template.New("ex").Parse(tmpl))
|
|
v := map[string]interface{}{
|
|
"Title": "Test <b>World</b>",
|
|
"Body": template.HTML("<script>alert(1)</script>"),
|
|
}
|
|
t.Execute(os.Stdout, v)
|
|
}`}, 0, gosec.NewConfig()}, {[]string{
|
|
`
|
|
// Using a variable to initialize could potentially be dangerous. Under the
|
|
// current model this will likely produce some false positives.
|
|
package main
|
|
import (
|
|
"html/template"
|
|
"os"
|
|
)
|
|
const tmpl = ""
|
|
func main() {
|
|
a := "something from another place"
|
|
t := template.Must(template.New("ex").Parse(tmpl))
|
|
v := map[string]interface{}{
|
|
"Title": "Test <b>World</b>",
|
|
"Body": template.HTML(a),
|
|
}
|
|
t.Execute(os.Stdout, v)
|
|
}`}, 1, gosec.NewConfig()}, {[]string{
|
|
`
|
|
package main
|
|
import (
|
|
"html/template"
|
|
"os"
|
|
)
|
|
const tmpl = ""
|
|
func main() {
|
|
a := "something from another place"
|
|
t := template.Must(template.New("ex").Parse(tmpl))
|
|
v := map[string]interface{}{
|
|
"Title": "Test <b>World</b>",
|
|
"Body": template.JS(a),
|
|
}
|
|
t.Execute(os.Stdout, v)
|
|
}`}, 1, gosec.NewConfig()}, {[]string{
|
|
`
|
|
package main
|
|
import (
|
|
"html/template"
|
|
"os"
|
|
)
|
|
const tmpl = ""
|
|
func main() {
|
|
a := "something from another place"
|
|
t := template.Must(template.New("ex").Parse(tmpl))
|
|
v := map[string]interface{}{
|
|
"Title": "Test <b>World</b>",
|
|
"Body": template.URL(a),
|
|
}
|
|
t.Execute(os.Stdout, v)
|
|
}`}, 1, gosec.NewConfig()}}
|
|
|
|
// SampleCodeG204 - Subprocess auditing
|
|
SampleCodeG204 = []CodeSample{{[]string{`
|
|
// Calling any function which starts a new process
|
|
// with a function call as an argument is considered a command injection
|
|
package main
|
|
import (
|
|
"log"
|
|
"os/exec"
|
|
"context"
|
|
)
|
|
func main() {
|
|
err := exec.CommandContext(context.Background(), "sleep", "5").Run()
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
log.Printf("Command finished with error: %v", err)
|
|
}`}, 1, gosec.NewConfig()}, {[]string{`
|
|
// Calling any function which starts a new process with using
|
|
// command line arguments as it's arguments is considered dangerous
|
|
package main
|
|
import (
|
|
"log"
|
|
"os"
|
|
"os/exec"
|
|
)
|
|
func main() {
|
|
err := exec.CommandContext(os.Args[0], "sleep", "5").Run()
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
log.Printf("Command finished with error: %v", err)
|
|
}`}, 1, gosec.NewConfig()}, {[]string{`
|
|
// Initializing a local variable using a environmental
|
|
// variable is consider as a dangerous user input
|
|
package main
|
|
import (
|
|
"log"
|
|
"os"
|
|
"os/exec"
|
|
)
|
|
func main() {
|
|
run := "sleep" + os.Getenv("SOMETHING")
|
|
cmd := exec.Command(run, "5")
|
|
err := cmd.Start()
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
log.Printf("Waiting for command to finish...")
|
|
err = cmd.Wait()
|
|
log.Printf("Command finished with error: %v", err)
|
|
}`}, 1, gosec.NewConfig()}, {[]string{`
|
|
// gosec doesn't have enough context to decide that the
|
|
// command argument of the RunCmd function is harcoded string
|
|
// and that's why it's better to warn the user so he can audit it
|
|
package main
|
|
|
|
import (
|
|
"log"
|
|
"os/exec"
|
|
)
|
|
|
|
func RunCmd(command string) {
|
|
cmd := exec.Command(command, "5")
|
|
err := cmd.Start()
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
log.Printf("Waiting for command to finish...")
|
|
err = cmd.Wait()
|
|
}
|
|
|
|
func main() {
|
|
RunCmd("sleep")
|
|
}`}, 1, gosec.NewConfig()}, {[]string{`
|
|
// syscall.Exec function called with harcoded arguments
|
|
// shouldn't be consider as a command injection
|
|
package main
|
|
import (
|
|
"fmt"
|
|
"syscall"
|
|
)
|
|
func main() {
|
|
err := syscall.Exec("/bin/cat", []string{"/etc/passwd"}, nil)
|
|
if err != nil {
|
|
fmt.Printf("Error: %v\n", err)
|
|
}
|
|
}`}, 0, gosec.NewConfig()},
|
|
{[]string{`
|
|
// starting a process with a variable as an argument
|
|
// even if not constant is not considered as dangerous
|
|
// because it has harcoded value
|
|
package main
|
|
import (
|
|
"log"
|
|
"os/exec"
|
|
)
|
|
func main() {
|
|
run := "sleep"
|
|
cmd := exec.Command(run, "5")
|
|
err := cmd.Start()
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
log.Printf("Waiting for command to finish...")
|
|
err = cmd.Wait()
|
|
log.Printf("Command finished with error: %v", err)
|
|
}`}, 0, gosec.NewConfig()}}
|
|
|
|
// SampleCodeG301 - mkdir permission check
|
|
SampleCodeG301 = []CodeSample{{[]string{`
|
|
package main
|
|
import "os"
|
|
func main() {
|
|
os.Mkdir("/tmp/mydir", 0777)
|
|
os.Mkdir("/tmp/mydir", 0600)
|
|
os.MkdirAll("/tmp/mydir/mysubidr", 0775)
|
|
}`}, 2, gosec.NewConfig()}}
|
|
|
|
// SampleCodeG302 - file create / chmod permissions check
|
|
SampleCodeG302 = []CodeSample{{[]string{`
|
|
package main
|
|
import "os"
|
|
func main() {
|
|
os.Chmod("/tmp/somefile", 0777)
|
|
os.Chmod("/tmp/someotherfile", 0600)
|
|
os.OpenFile("/tmp/thing", os.O_CREATE|os.O_WRONLY, 0666)
|
|
os.OpenFile("/tmp/thing", os.O_CREATE|os.O_WRONLY, 0600)
|
|
}`}, 2, gosec.NewConfig()}}
|
|
|
|
// SampleCodeG303 - bad tempfile permissions & hardcoded shared path
|
|
SampleCodeG303 = []CodeSample{{[]string{`
|
|
package samples
|
|
import (
|
|
"io/ioutil"
|
|
"os"
|
|
)
|
|
func main() {
|
|
file1, _ := os.Create("/tmp/demo1")
|
|
defer file1.Close()
|
|
ioutil.WriteFile("/tmp/demo2", []byte("This is some data"), 0644)
|
|
}`}, 2, gosec.NewConfig()}}
|
|
|
|
// SampleCodeG304 - potential file inclusion vulnerability
|
|
SampleCodeG304 = []CodeSample{{[]string{`
|
|
package main
|
|
import (
|
|
"os"
|
|
"io/ioutil"
|
|
"log"
|
|
)
|
|
func main() {
|
|
f := os.Getenv("tainted_file")
|
|
body, err := ioutil.ReadFile(f)
|
|
if err != nil {
|
|
log.Printf("Error: %v\n", err)
|
|
}
|
|
log.Print(body)
|
|
|
|
}`}, 1, gosec.NewConfig()}, {[]string{`
|
|
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"log"
|
|
"net/http"
|
|
"os"
|
|
)
|
|
|
|
func main() {
|
|
http.HandleFunc("/bar", func(w http.ResponseWriter, r *http.Request) {
|
|
title := r.URL.Query().Get("title")
|
|
f, err := os.Open(title)
|
|
if err != nil {
|
|
fmt.Printf("Error: %v\n", err)
|
|
}
|
|
body := make([]byte, 5)
|
|
if _, err = f.Read(body); err != nil {
|
|
fmt.Printf("Error: %v\n", err)
|
|
}
|
|
fmt.Fprintf(w, "%s", body)
|
|
})
|
|
log.Fatal(http.ListenAndServe(":3000", nil))
|
|
}`}, 1, gosec.NewConfig()}, {[]string{`
|
|
package main
|
|
|
|
import (
|
|
"log"
|
|
"os"
|
|
"io/ioutil"
|
|
)
|
|
|
|
func main() {
|
|
f2 := os.Getenv("tainted_file2")
|
|
body, err := ioutil.ReadFile("/tmp/" + f2)
|
|
if err != nil {
|
|
log.Printf("Error: %v\n", err)
|
|
}
|
|
log.Print(body)
|
|
}`}, 1, gosec.NewConfig()}, {[]string{`
|
|
package main
|
|
|
|
import (
|
|
"bufio"
|
|
"fmt"
|
|
"os"
|
|
"path/filepath"
|
|
)
|
|
|
|
func main() {
|
|
reader := bufio.NewReader(os.Stdin)
|
|
fmt.Print("Please enter file to read: ")
|
|
file, _ := reader.ReadString('\n')
|
|
file = file[:len(file)-1]
|
|
f, err := os.Open(filepath.Join("/tmp/service/", file))
|
|
if err != nil {
|
|
fmt.Printf("Error: %v\n", err)
|
|
}
|
|
contents := make([]byte, 15)
|
|
if _, err = f.Read(contents); err != nil {
|
|
fmt.Printf("Error: %v\n", err)
|
|
}
|
|
fmt.Println(string(contents))
|
|
}`}, 1, gosec.NewConfig()}, {[]string{`
|
|
package main
|
|
|
|
import (
|
|
"log"
|
|
"os"
|
|
"io/ioutil"
|
|
"path/filepath"
|
|
)
|
|
|
|
func main() {
|
|
dir := os.Getenv("server_root")
|
|
f3 := os.Getenv("tainted_file3")
|
|
// edge case where both a binary expression and file Join are used.
|
|
body, err := ioutil.ReadFile(filepath.Join("/var/"+dir, f3))
|
|
if err != nil {
|
|
log.Printf("Error: %v\n", err)
|
|
}
|
|
log.Print(body)
|
|
}`}, 1, gosec.NewConfig()}}
|
|
|
|
// SampleCodeG305 - File path traversal when extracting zip archives
|
|
SampleCodeG305 = []CodeSample{{[]string{`
|
|
package unzip
|
|
|
|
import (
|
|
"archive/zip"
|
|
"io"
|
|
"os"
|
|
"path/filepath"
|
|
)
|
|
|
|
func unzip(archive, target string) error {
|
|
reader, err := zip.OpenReader(archive)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := os.MkdirAll(target, 0750); err != nil {
|
|
return err
|
|
}
|
|
|
|
for _, file := range reader.File {
|
|
path := filepath.Join(target, file.Name)
|
|
if file.FileInfo().IsDir() {
|
|
os.MkdirAll(path, file.Mode()) // #nosec
|
|
continue
|
|
}
|
|
|
|
fileReader, err := file.Open()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer fileReader.Close()
|
|
|
|
targetFile, err := os.OpenFile(path, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, file.Mode())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer targetFile.Close()
|
|
|
|
if _, err := io.Copy(targetFile, fileReader); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}`}, 1, gosec.NewConfig()}, {[]string{`
|
|
package unzip
|
|
|
|
import (
|
|
"archive/zip"
|
|
"io"
|
|
"os"
|
|
"path/filepath"
|
|
)
|
|
|
|
func unzip(archive, target string) error {
|
|
reader, err := zip.OpenReader(archive)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := os.MkdirAll(target, 0750); err != nil {
|
|
return err
|
|
}
|
|
|
|
for _, file := range reader.File {
|
|
archiveFile := file.Name
|
|
path := filepath.Join(target, archiveFile)
|
|
if file.FileInfo().IsDir() {
|
|
os.MkdirAll(path, file.Mode()) // #nosec
|
|
continue
|
|
}
|
|
|
|
fileReader, err := file.Open()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer fileReader.Close()
|
|
|
|
targetFile, err := os.OpenFile(path, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, file.Mode())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer targetFile.Close()
|
|
|
|
if _, err := io.Copy(targetFile, fileReader); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}`}, 1, gosec.NewConfig()}}
|
|
|
|
// SampleCodeG401 - Use of weak crypto MD5
|
|
SampleCodeG401 = []CodeSample{
|
|
{[]string{`
|
|
package main
|
|
import (
|
|
"crypto/md5"
|
|
"fmt"
|
|
"io"
|
|
"log"
|
|
"os"
|
|
)
|
|
func main() {
|
|
f, err := os.Open("file.txt")
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
defer f.Close()
|
|
|
|
h := md5.New()
|
|
if _, err := io.Copy(h, f); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
fmt.Printf("%x", h.Sum(nil))
|
|
}`}, 1, gosec.NewConfig()}}
|
|
|
|
// SampleCodeG401b - Use of weak crypto SHA1
|
|
SampleCodeG401b = []CodeSample{
|
|
{[]string{`
|
|
package main
|
|
import (
|
|
"crypto/sha1"
|
|
"fmt"
|
|
"io"
|
|
"log"
|
|
"os"
|
|
)
|
|
func main() {
|
|
f, err := os.Open("file.txt")
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
defer f.Close()
|
|
|
|
h := sha1.New()
|
|
if _, err := io.Copy(h, f); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
fmt.Printf("%x", h.Sum(nil))
|
|
}`}, 1, gosec.NewConfig()}}
|
|
|
|
// SampleCodeG402 - TLS settings
|
|
SampleCodeG402 = []CodeSample{{[]string{`
|
|
// InsecureSkipVerify
|
|
package main
|
|
import (
|
|
"crypto/tls"
|
|
"fmt"
|
|
"net/http"
|
|
)
|
|
func main() {
|
|
tr := &http.Transport{
|
|
TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
|
|
}
|
|
|
|
client := &http.Client{Transport: tr}
|
|
_, err := client.Get("https://golang.org/")
|
|
if err != nil {
|
|
fmt.Println(err)
|
|
}
|
|
}`}, 1, gosec.NewConfig()}, {[]string{
|
|
`
|
|
// Insecure minimum version
|
|
package main
|
|
import (
|
|
"crypto/tls"
|
|
"fmt"
|
|
"net/http"
|
|
)
|
|
func main() {
|
|
tr := &http.Transport{
|
|
TLSClientConfig: &tls.Config{MinVersion: 0},
|
|
}
|
|
client := &http.Client{Transport: tr}
|
|
_, err := client.Get("https://golang.org/")
|
|
if err != nil {
|
|
fmt.Println(err)
|
|
}
|
|
}`}, 1, gosec.NewConfig()}, {[]string{`
|
|
// Insecure max version
|
|
package main
|
|
import (
|
|
"crypto/tls"
|
|
"fmt"
|
|
"net/http"
|
|
)
|
|
func main() {
|
|
tr := &http.Transport{
|
|
TLSClientConfig: &tls.Config{MaxVersion: 0},
|
|
}
|
|
client := &http.Client{Transport: tr}
|
|
_, err := client.Get("https://golang.org/")
|
|
if err != nil {
|
|
fmt.Println(err)
|
|
}
|
|
}
|
|
`}, 1, gosec.NewConfig()}, {
|
|
[]string{`
|
|
// Insecure ciphersuite selection
|
|
package main
|
|
import (
|
|
"crypto/tls"
|
|
"fmt"
|
|
"net/http"
|
|
)
|
|
func main() {
|
|
tr := &http.Transport{
|
|
TLSClientConfig: &tls.Config{CipherSuites: []uint16{
|
|
tls.TLS_RSA_WITH_AES_128_GCM_SHA256,
|
|
tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
|
|
},},
|
|
}
|
|
client := &http.Client{Transport: tr}
|
|
_, err := client.Get("https://golang.org/")
|
|
if err != nil {
|
|
fmt.Println(err)
|
|
}
|
|
}`}, 1, gosec.NewConfig()}}
|
|
|
|
// SampleCodeG403 - weak key strength
|
|
SampleCodeG403 = []CodeSample{
|
|
{[]string{`
|
|
package main
|
|
import (
|
|
"crypto/rand"
|
|
"crypto/rsa"
|
|
"fmt"
|
|
)
|
|
func main() {
|
|
//Generate Private Key
|
|
pvk, err := rsa.GenerateKey(rand.Reader, 1024)
|
|
if err != nil {
|
|
fmt.Println(err)
|
|
}
|
|
fmt.Println(pvk)
|
|
}`}, 1, gosec.NewConfig()}}
|
|
|
|
// SampleCodeG404 - weak random number
|
|
SampleCodeG404 = []CodeSample{
|
|
{[]string{`
|
|
package main
|
|
import "crypto/rand"
|
|
func main() {
|
|
good, _ := rand.Read(nil)
|
|
println(good)
|
|
}`}, 0, gosec.NewConfig()}, {[]string{`
|
|
package main
|
|
import "math/rand"
|
|
func main() {
|
|
bad := rand.Int()
|
|
println(bad)
|
|
}`}, 1, gosec.NewConfig()}, {[]string{`
|
|
package main
|
|
import (
|
|
"crypto/rand"
|
|
mrand "math/rand"
|
|
)
|
|
func main() {
|
|
good, _ := rand.Read(nil)
|
|
println(good)
|
|
i := mrand.Int31()
|
|
println(i)
|
|
}`}, 0, gosec.NewConfig()}}
|
|
|
|
// SampleCodeG501 - Blacklisted import MD5
|
|
SampleCodeG501 = []CodeSample{
|
|
{[]string{`
|
|
package main
|
|
import (
|
|
"crypto/md5"
|
|
"fmt"
|
|
"os"
|
|
)
|
|
func main() {
|
|
for _, arg := range os.Args {
|
|
fmt.Printf("%x - %s\n", md5.Sum([]byte(arg)), arg)
|
|
}
|
|
}`}, 1, gosec.NewConfig()}}
|
|
|
|
// SampleCodeG502 - Blacklisted import DES
|
|
SampleCodeG502 = []CodeSample{
|
|
{[]string{`
|
|
package main
|
|
import (
|
|
"crypto/cipher"
|
|
"crypto/des"
|
|
"crypto/rand"
|
|
"encoding/hex"
|
|
"fmt"
|
|
"io"
|
|
)
|
|
func main() {
|
|
block, err := des.NewCipher([]byte("sekritz"))
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
plaintext := []byte("I CAN HAZ SEKRIT MSG PLZ")
|
|
ciphertext := make([]byte, des.BlockSize+len(plaintext))
|
|
iv := ciphertext[:des.BlockSize]
|
|
if _, err := io.ReadFull(rand.Reader, iv); err != nil {
|
|
panic(err)
|
|
}
|
|
stream := cipher.NewCFBEncrypter(block, iv)
|
|
stream.XORKeyStream(ciphertext[des.BlockSize:], plaintext)
|
|
fmt.Println("Secret message is: %s", hex.EncodeToString(ciphertext))
|
|
}`}, 1, gosec.NewConfig()}}
|
|
|
|
// SampleCodeG503 - Blacklisted import RC4
|
|
SampleCodeG503 = []CodeSample{{[]string{`
|
|
package main
|
|
import (
|
|
"crypto/rc4"
|
|
"encoding/hex"
|
|
"fmt"
|
|
)
|
|
func main() {
|
|
cipher, err := rc4.NewCipher([]byte("sekritz"))
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
plaintext := []byte("I CAN HAZ SEKRIT MSG PLZ")
|
|
ciphertext := make([]byte, len(plaintext))
|
|
cipher.XORKeyStream(ciphertext, plaintext)
|
|
fmt.Println("Secret message is: %s", hex.EncodeToString(ciphertext))
|
|
}`}, 1, gosec.NewConfig()}}
|
|
|
|
// SampleCodeG504 - Blacklisted import CGI
|
|
SampleCodeG504 = []CodeSample{{[]string{`
|
|
package main
|
|
import (
|
|
"net/http/cgi"
|
|
"net/http"
|
|
)
|
|
func main() {
|
|
cgi.Serve(http.FileServer(http.Dir("/usr/share/doc")))
|
|
}`}, 1, gosec.NewConfig()}}
|
|
// SampleCodeG505 - Blacklisted import SHA1
|
|
SampleCodeG505 = []CodeSample{
|
|
{[]string{`
|
|
package main
|
|
import (
|
|
"crypto/sha1"
|
|
"fmt"
|
|
"os"
|
|
)
|
|
func main() {
|
|
for _, arg := range os.Args {
|
|
fmt.Printf("%x - %s\n", sha1.Sum([]byte(arg)), arg)
|
|
}
|
|
}`}, 1, gosec.NewConfig()}}
|
|
// SampleCode601 - Go build tags
|
|
SampleCode601 = []CodeSample{{[]string{`
|
|
// +build tag
|
|
|
|
package main
|
|
func main() {
|
|
fmt.Println("no package imported error")
|
|
}`}, 1, gosec.NewConfig()}}
|
|
)
|