mirror of
https://github.com/securego/gosec.git
synced 2024-12-25 12:05:52 +00:00
762ff3a709
* Support stripping vendor paths when matching calls * Factor out matching of formatter string * Quoted strings are safe to use with SQL str formatted strings * Add test for allowing quoted strings with string formatters * Install the pq package for tests to pass
995 lines
19 KiB
Go
995 lines
19 KiB
Go
package testutils
|
|
|
|
// CodeSample encapsulates a snippet of source code that compiles, and how many errors should be detected
|
|
type CodeSample struct {
|
|
Code string
|
|
Errors int
|
|
}
|
|
|
|
var (
|
|
// SampleCodeG101 code snippets for hardcoded credentials
|
|
SampleCodeG101 = []CodeSample{{`
|
|
package main
|
|
import "fmt"
|
|
func main() {
|
|
username := "admin"
|
|
password := "f62e5bcda4fae4f82370da0c6f20697b8f8447ef"
|
|
fmt.Println("Doing something with: ", username, password)
|
|
}`, 1}, {`
|
|
// Entropy check should not report this error by default
|
|
package main
|
|
import "fmt"
|
|
func main() {
|
|
username := "admin"
|
|
password := "secret"
|
|
fmt.Println("Doing something with: ", username, password)
|
|
}`, 0}, {`
|
|
package main
|
|
import "fmt"
|
|
var password = "f62e5bcda4fae4f82370da0c6f20697b8f8447ef"
|
|
func main() {
|
|
username := "admin"
|
|
fmt.Println("Doing something with: ", username, password)
|
|
}`, 1}, {`
|
|
package main
|
|
import "fmt"
|
|
const password = "f62e5bcda4fae4f82370da0c6f20697b8f8447ef"
|
|
func main() {
|
|
username := "admin"
|
|
fmt.Println("Doing something with: ", username, password)
|
|
}`, 1}, {`
|
|
package main
|
|
import "fmt"
|
|
const (
|
|
username = "user"
|
|
password = "f62e5bcda4fae4f82370da0c6f20697b8f8447ef"
|
|
)
|
|
func main() {
|
|
fmt.Println("Doing something with: ", username, password)
|
|
}`, 1}, {`
|
|
package main
|
|
var password string
|
|
func init() {
|
|
password = "f62e5bcda4fae4f82370da0c6f20697b8f8447ef"
|
|
}`, 1}, {`
|
|
package main
|
|
const (
|
|
ATNStateSomethingElse = 1
|
|
ATNStateTokenStart = 42
|
|
)
|
|
func main() {
|
|
println(ATNStateTokenStart)
|
|
}`, 0}, {`
|
|
package main
|
|
const (
|
|
ATNStateTokenStart = "f62e5bcda4fae4f82370da0c6f20697b8f8447ef"
|
|
)
|
|
func main() {
|
|
println(ATNStateTokenStart)
|
|
}`, 1}}
|
|
|
|
// SampleCodeG102 code snippets for network binding
|
|
SampleCodeG102 = []CodeSample{
|
|
// Bind to all networks explicitly
|
|
{`
|
|
package main
|
|
import (
|
|
"log"
|
|
"net"
|
|
)
|
|
func main() {
|
|
l, err := net.Listen("tcp", "0.0.0.0:2000")
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
defer l.Close()
|
|
}`, 1},
|
|
|
|
// Bind to all networks implicitly (default if host omitted)
|
|
{`
|
|
package main
|
|
import (
|
|
"log"
|
|
"net"
|
|
)
|
|
func main() {
|
|
l, err := net.Listen("tcp", ":2000")
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
defer l.Close()
|
|
}`, 1},
|
|
}
|
|
// SampleCodeG103 find instances of unsafe blocks for auditing purposes
|
|
SampleCodeG103 = []CodeSample{
|
|
{`
|
|
package main
|
|
import (
|
|
"fmt"
|
|
"unsafe"
|
|
)
|
|
type Fake struct{}
|
|
func (Fake) Good() {}
|
|
func main() {
|
|
unsafeM := Fake{}
|
|
unsafeM.Good()
|
|
intArray := [...]int{1, 2}
|
|
fmt.Printf("\nintArray: %v\n", intArray)
|
|
intPtr := &intArray[0]
|
|
fmt.Printf("\nintPtr=%p, *intPtr=%d.\n", intPtr, *intPtr)
|
|
addressHolder := uintptr(unsafe.Pointer(intPtr)) + unsafe.Sizeof(intArray[0])
|
|
intPtr = (*int)(unsafe.Pointer(addressHolder))
|
|
fmt.Printf("\nintPtr=%p, *intPtr=%d.\n\n", intPtr, *intPtr)
|
|
}`, 3}}
|
|
|
|
// SampleCodeG104 finds errors that aren't being handled
|
|
SampleCodeG104 = []CodeSample{
|
|
{`
|
|
package main
|
|
import "fmt"
|
|
func test() (int,error) {
|
|
return 0, nil
|
|
}
|
|
func main() {
|
|
v, _ := test()
|
|
fmt.Println(v)
|
|
}`, 1}, {`
|
|
package main
|
|
import (
|
|
"io/ioutil"
|
|
"os"
|
|
"fmt"
|
|
)
|
|
func a() error {
|
|
return fmt.Errorf("This is an error")
|
|
}
|
|
func b() {
|
|
fmt.Println("b")
|
|
ioutil.WriteFile("foo.txt", []byte("bar"), os.ModeExclusive)
|
|
}
|
|
func c() string {
|
|
return fmt.Sprintf("This isn't anything")
|
|
}
|
|
func main() {
|
|
_ = a()
|
|
a()
|
|
b()
|
|
c()
|
|
}`, 3}, {`
|
|
package main
|
|
import "fmt"
|
|
func test() error {
|
|
return nil
|
|
}
|
|
func main() {
|
|
e := test()
|
|
fmt.Println(e)
|
|
}`, 0}}
|
|
|
|
// SampleCodeG105 - bignum overflow
|
|
SampleCodeG105 = []CodeSample{{`
|
|
package main
|
|
import (
|
|
"math/big"
|
|
)
|
|
func main() {
|
|
z := new(big.Int)
|
|
x := new(big.Int)
|
|
x = x.SetUint64(2)
|
|
y := new(big.Int)
|
|
y = y.SetUint64(4)
|
|
m := new(big.Int)
|
|
m = m.SetUint64(0)
|
|
z = z.Exp(x, y, m)
|
|
}`, 1}}
|
|
|
|
// SampleCodeG106 - ssh InsecureIgnoreHostKey
|
|
SampleCodeG106 = []CodeSample{{`
|
|
package main
|
|
import (
|
|
"golang.org/x/crypto/ssh"
|
|
)
|
|
func main() {
|
|
_ = ssh.InsecureIgnoreHostKey()
|
|
}`, 1}}
|
|
|
|
// SampleCodeG107 - SSRF via http requests with variable url
|
|
SampleCodeG107 = []CodeSample{{`
|
|
package main
|
|
import (
|
|
"net/http"
|
|
"io/ioutil"
|
|
"fmt"
|
|
"os"
|
|
)
|
|
func main() {
|
|
url := os.Getenv("tainted_url")
|
|
resp, err := http.Get(url)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
defer resp.Body.Close()
|
|
body, err := ioutil.ReadAll(resp.Body)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
fmt.Printf("%s", body)
|
|
}`, 1}, {`
|
|
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"net/http"
|
|
)
|
|
const url = "http://127.0.0.1"
|
|
func main() {
|
|
resp, err := http.Get(url)
|
|
if err != nil {
|
|
fmt.Println(err)
|
|
}
|
|
fmt.Println(resp.Status)
|
|
}`, 0}}
|
|
// SampleCodeG201 - SQL injection via format string
|
|
SampleCodeG201 = []CodeSample{
|
|
{`
|
|
// Format string without proper quoting
|
|
package main
|
|
import (
|
|
"database/sql"
|
|
"fmt"
|
|
"os"
|
|
//_ "github.com/mattn/go-sqlite3"
|
|
)
|
|
|
|
func main(){
|
|
db, err := sql.Open("sqlite3", ":memory:")
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
q := fmt.Sprintf("SELECT * FROM foo where name = '%s'", os.Args[1])
|
|
rows, err := db.Query(q)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
defer rows.Close()
|
|
}`, 1}, {`
|
|
// Format string false positive, safe string spec.
|
|
package main
|
|
import (
|
|
"database/sql"
|
|
"fmt"
|
|
"os"
|
|
//_ "github.com/mattn/go-sqlite3"
|
|
)
|
|
|
|
func main(){
|
|
db, err := sql.Open("sqlite3", ":memory:")
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
q := fmt.Sprintf("SELECT * FROM foo where id = %d", os.Args[1])
|
|
rows, err := db.Query(q)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
defer rows.Close()
|
|
}`, 0}, {
|
|
`
|
|
// Format string false positive
|
|
package main
|
|
import (
|
|
"database/sql"
|
|
//_ "github.com/mattn/go-sqlite3"
|
|
)
|
|
var staticQuery = "SELECT * FROM foo WHERE age < 32"
|
|
func main(){
|
|
db, err := sql.Open("sqlite3", ":memory:")
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
rows, err := db.Query(staticQuery)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
defer rows.Close()
|
|
}`, 0}, {`
|
|
// Format string false positive, quoted formatter argument.
|
|
package main
|
|
import (
|
|
"database/sql"
|
|
"fmt"
|
|
"os"
|
|
"github.com/lib/pq"
|
|
)
|
|
|
|
func main(){
|
|
db, err := sql.Open("postgres", "localhost")
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
q := fmt.Sprintf("SELECT * FROM %s where id = 1", pq.QuoteIdentifier(os.Args[1]))
|
|
rows, err := db.Query(q)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
defer rows.Close()
|
|
}`, 0}}
|
|
|
|
// SampleCodeG202 - SQL query string building via string concatenation
|
|
SampleCodeG202 = []CodeSample{
|
|
{`
|
|
package main
|
|
import (
|
|
"database/sql"
|
|
//_ "github.com/mattn/go-sqlite3"
|
|
"os"
|
|
)
|
|
func main(){
|
|
db, err := sql.Open("sqlite3", ":memory:")
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
rows, err := db.Query("SELECT * FROM foo WHERE name = " + os.Args[1])
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
defer rows.Close()
|
|
}`, 1}, {`
|
|
// false positive
|
|
package main
|
|
import (
|
|
"database/sql"
|
|
//_ "github.com/mattn/go-sqlite3"
|
|
)
|
|
var staticQuery = "SELECT * FROM foo WHERE age < "
|
|
func main(){
|
|
db, err := sql.Open("sqlite3", ":memory:")
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
rows, err := db.Query(staticQuery + "32")
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
defer rows.Close()
|
|
}`, 0}, {`
|
|
package main
|
|
import (
|
|
"database/sql"
|
|
//_ "github.com/mattn/go-sqlite3"
|
|
)
|
|
const age = "32"
|
|
var staticQuery = "SELECT * FROM foo WHERE age < "
|
|
func main(){
|
|
db, err := sql.Open("sqlite3", ":memory:")
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
rows, err := db.Query(staticQuery + age)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
defer rows.Close()
|
|
}
|
|
`, 0}}
|
|
|
|
// SampleCodeG203 - Template checks
|
|
SampleCodeG203 = []CodeSample{
|
|
{`
|
|
// 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}, {
|
|
`
|
|
// 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}, {
|
|
`
|
|
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}, {
|
|
`
|
|
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}}
|
|
|
|
// SampleCodeG204 - Subprocess auditing
|
|
SampleCodeG204 = []CodeSample{{`
|
|
package main
|
|
import "syscall"
|
|
func main() {
|
|
syscall.Exec("/bin/cat", []string{ "/etc/passwd" }, nil)
|
|
}`, 1}, {`
|
|
package main
|
|
import (
|
|
"log"
|
|
"os/exec"
|
|
)
|
|
func main() {
|
|
cmd := exec.Command("sleep", "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}, {`
|
|
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}, {`
|
|
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}}
|
|
|
|
// SampleCodeG301 - mkdir permission check
|
|
SampleCodeG301 = []CodeSample{{`
|
|
package main
|
|
import "os"
|
|
func main() {
|
|
os.Mkdir("/tmp/mydir", 0777)
|
|
os.Mkdir("/tmp/mydir", 0600)
|
|
os.MkdirAll("/tmp/mydir/mysubidr", 0775)
|
|
}`, 2}}
|
|
|
|
// SampleCodeG302 - file create / chmod permissions check
|
|
SampleCodeG302 = []CodeSample{{`
|
|
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}}
|
|
|
|
// SampleCodeG303 - bad tempfile permissions & hardcoded shared path
|
|
SampleCodeG303 = []CodeSample{{`
|
|
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}}
|
|
|
|
// SampleCodeG304 - potential file inclusion vulnerability
|
|
SampleCodeG304 = []CodeSample{{`
|
|
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}, {`
|
|
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}, {`
|
|
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}, {`
|
|
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}, {`
|
|
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}}
|
|
|
|
// SampleCodeG305 - File path traversal when extracting zip archives
|
|
SampleCodeG305 = []CodeSample{{`
|
|
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}, {`
|
|
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}}
|
|
|
|
// SampleCodeG401 - Use of weak crypto MD5
|
|
SampleCodeG401 = []CodeSample{
|
|
{`
|
|
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}}
|
|
|
|
// SampleCodeG401b - Use of weak crypto SHA1
|
|
SampleCodeG401b = []CodeSample{
|
|
{`
|
|
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}}
|
|
|
|
// SampleCodeG402 - TLS settings
|
|
SampleCodeG402 = []CodeSample{{`
|
|
// 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}, {
|
|
`
|
|
// 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}, {`
|
|
// 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}, {
|
|
`
|
|
// 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_RC4_128_SHA,
|
|
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}}
|
|
|
|
// SampleCodeG403 - weak key strength
|
|
SampleCodeG403 = []CodeSample{
|
|
{`
|
|
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}}
|
|
|
|
// SampleCodeG404 - weak random number
|
|
SampleCodeG404 = []CodeSample{
|
|
{`
|
|
package main
|
|
import "crypto/rand"
|
|
func main() {
|
|
good, _ := rand.Read(nil)
|
|
println(good)
|
|
}`, 0}, {`
|
|
package main
|
|
import "math/rand"
|
|
func main() {
|
|
bad := rand.Int()
|
|
println(bad)
|
|
}`, 1}, {`
|
|
package main
|
|
import (
|
|
"crypto/rand"
|
|
mrand "math/rand"
|
|
)
|
|
func main() {
|
|
good, _ := rand.Read(nil)
|
|
println(good)
|
|
i := mrand.Int31()
|
|
println(i)
|
|
}`, 0}}
|
|
|
|
// SampleCodeG501 - Blacklisted import MD5
|
|
SampleCodeG501 = []CodeSample{
|
|
{`
|
|
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}}
|
|
|
|
// SampleCodeG502 - Blacklisted import DES
|
|
SampleCodeG502 = []CodeSample{
|
|
{`
|
|
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}}
|
|
|
|
// SampleCodeG503 - Blacklisted import RC4
|
|
SampleCodeG503 = []CodeSample{{`
|
|
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}}
|
|
|
|
// SampleCodeG504 - Blacklisted import CGI
|
|
SampleCodeG504 = []CodeSample{{`
|
|
package main
|
|
import (
|
|
"net/http/cgi"
|
|
"net/http"
|
|
)
|
|
func main() {
|
|
cgi.Serve(http.FileServer(http.Dir("/usr/share/doc")))
|
|
}`, 1}}
|
|
// SampleCodeG505 - Blacklisted import SHA1
|
|
SampleCodeG505 = []CodeSample{
|
|
{`
|
|
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}}
|
|
// SampleCode601 - Go build tags
|
|
SampleCode601 = []CodeSample{{`
|
|
// +build test
|
|
|
|
package main
|
|
func main() {
|
|
fmt.Println("no package imported error")
|
|
}`, 1}}
|
|
)
|