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Refactor : Replace Cwe with cwe.Weakness

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Matthieu MOREL 2021-05-07 16:54:34 +02:00 committed by GitHub
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11 changed files with 128 additions and 96 deletions
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16
README.md
View file

@ -47,6 +47,7 @@ echo "<check sum from the check sum file> gosec_vX.Y.Z_OS.tar.gz" | sha256sum -
gosec --help
```
### GitHub Action
You can run `gosec` as a GitHub action as follows:
@ -123,7 +124,6 @@ paths, and produce reports in different formats. By default all rules will be
run against the supplied input files. To recursively scan from the current
directory you can supply `./...` as the input argument.
### Available rules
- G101: Look for hard coded credentials
@ -173,9 +173,10 @@ $ gosec -include=G101,G203,G401 ./...
# Run everything except for rule G303
$ gosec -exclude=G303 ./...
```
### CWE Mapping
Every issue detected by `gosec` is mapped to a [CWE (Common Weakness Enumeration)](http://cwe.mitre.org/data/index.html) which describes in more generic terms the vulnerability. The exact mapping can be found [here](https://github.com/securego/gosec/blob/master/issue.go#L49).
Every issue detected by `gosec` is mapped to a [CWE (Common Weakness Enumeration)](http://cwe.mitre.org/data/index.html) which describes in more generic terms the vulnerability. The exact mapping can be found [here](https://github.com/securego/gosec/blob/master/issue.go#L50).
### Configuration
@ -197,6 +198,7 @@ A number of global settings can be provided in a configuration file as follows:
# Run with a global configuration file
$ gosec -conf config.json .
```
Also some rules accept configuration. For instance on rule `G104`, it is possible to define packages along with a list
of functions which will be skipped when auditing the not checked errors:
@ -224,7 +226,7 @@ You can also configure the hard-coded credentials rule `G101` with additional pa
### Dependencies
gosec will fetch automatically the dependencies of the code which is being analyzed when go module is turned on (e.g.` GO111MODULE=on`). If this is not the case,
gosec will fetch automatically the dependencies of the code which is being analyzed when go module is turned on (e.g.`GO111MODULE=on`). If this is not the case,
the dependencies need to be explicitly downloaded by running the `go get -d` command before the scan.
### Excluding test files and folders
@ -307,6 +309,7 @@ $ gosec -fmt=json -out=results.json *.go
### Build
You can build the binary with:
```bash
make
```
@ -314,11 +317,13 @@ make
### Note on Sarif Types Generation
Install the tool with :
```bash
go get -u github.com/a-h/generate/cmd/schema-generate
```
Then generate the types with :
```bash
schema-generate -i sarif-schema-2.1.0.json -o mypath/types.go
```
@ -326,10 +331,10 @@ schema-generate -i sarif-schema-2.1.0.json -o mypath/types.go
Most of the MarshallJSON/UnmarshalJSON are removed except the one for PropertyBag which is handy to inline the additionnal properties. The rest can be removed.
The URI,ID, UUID, GUID were renamed so it fits the Golang convention defined [here](https://github.com/golang/lint/blob/master/lint.go#L700)
### Tests
You can run all unit tests using:
```bash
make test
```
@ -360,7 +365,8 @@ into a volume as follows:
```bash
docker run --rm -it -w /<PROJECT>/ -v <YOUR PROJECT PATH>/<PROJECT>:/<PROJECT> securego/gosec /<PROJECT>/...
```
**Note:** the current working directory needs to be set with `-w` option in order to get successfully resolved the dependencies from go module file
**Note:** the current working directory needs to be set with `-w` option in order to get successfully resolved the dependencies from go module file
### Generate TLS rule

2
cmd/gosec/sort_issues_test.go
View file

@ -17,7 +17,7 @@ var defaultIssue = gosec.Issue{
Confidence: gosec.High,
Severity: gosec.High,
Code: "1: testcode",
Cwe: gosec.GetCwe("G101"),
Cwe: gosec.GetCweByRule("G101"),
}
func createIssue() gosec.Issue {

10
cwe/data.go
View file

@ -1,6 +1,6 @@
package cwe
var data = map[string]Weakness{
var data = map[string]*Weakness{
"118": {
ID: "118",
Description: "The software does not restrict or incorrectly restricts operations within the boundaries of a resource that is accessed using an index or pointer, such as memory or files.",
@ -104,6 +104,10 @@ var data = map[string]Weakness{
}
//Get Retrieves a CWE weakness by it's id
func Get(id string) Weakness {
return data[id]
func Get(id string) *Weakness {
weakness, ok := data[id]
if ok && weakness != nil {
return weakness
}
return nil
}

30
cwe/types.go
View file

@ -1,9 +1,17 @@
package cwe
import (
"encoding/json"
"fmt"
)
const (
//URL is the base URL for CWE definitions
URL = "https://cwe.mitre.org/data/definitions/"
//Acronym is the acronym of CWE
Acronym = "CWE"
)
// Weakness defines a CWE weakness based on http://cwe.mitre.org/data/xsd/cwe_schema_v6.4.xsd
type Weakness struct {
ID string
@ -11,7 +19,23 @@ type Weakness struct {
Description string
}
//URL Expose the CWE URL
func (w *Weakness) URL() string {
return fmt.Sprintf("https://cwe.mitre.org/data/definitions/%s.html", w.ID)
//SprintURL format the CWE URL
func (w *Weakness) SprintURL() string {
return fmt.Sprintf("%s%s.html", URL, w.ID)
}
//SprintID format the CWE ID
func (w *Weakness) SprintID() string {
return fmt.Sprintf("%s-%s", Acronym, w.ID)
}
//MarshalJSON print only id and URL
func (w *Weakness) MarshalJSON() ([]byte, error) {
return json.Marshal(&struct {
ID string `json:"id"`
URL string `json:"url"`
}{
ID: w.ID,
URL: w.SprintURL(),
})
}

101
issue.go
View file

@ -19,6 +19,7 @@ import (
"bytes"
"encoding/json"
"fmt"
"github.com/securego/gosec/v2/cwe"
"go/ast"
"go/token"
"os"
@ -41,62 +42,60 @@ const (
// the beginning and after the end of a code snippet
const SnippetOffset = 1
// Cwe id and url
type Cwe struct {
ID string
URL string
// GetCweByRule retrieves a cwe weakness for a given RuleID
func GetCweByRule(id string) *cwe.Weakness {
cweID, ok := ruleToCWE[id]
if ok && cweID != "" {
return cwe.Get(cweID)
}
return nil
}
// GetCwe creates a cwe object for a given RuleID
func GetCwe(id string) Cwe {
return Cwe{ID: id, URL: fmt.Sprintf("https://cwe.mitre.org/data/definitions/%s.html", id)}
}
// IssueToCWE maps gosec rules to CWEs
var IssueToCWE = map[string]Cwe{
"G101": GetCwe("798"),
"G102": GetCwe("200"),
"G103": GetCwe("242"),
"G104": GetCwe("703"),
"G106": GetCwe("322"),
"G107": GetCwe("88"),
"G108": GetCwe("200"),
"G109": GetCwe("190"),
"G110": GetCwe("409"),
"G201": GetCwe("89"),
"G202": GetCwe("89"),
"G203": GetCwe("79"),
"G204": GetCwe("78"),
"G301": GetCwe("276"),
"G302": GetCwe("276"),
"G303": GetCwe("377"),
"G304": GetCwe("22"),
"G305": GetCwe("22"),
"G306": GetCwe("276"),
"G307": GetCwe("703"),
"G401": GetCwe("326"),
"G402": GetCwe("295"),
"G403": GetCwe("310"),
"G404": GetCwe("338"),
"G501": GetCwe("327"),
"G502": GetCwe("327"),
"G503": GetCwe("327"),
"G504": GetCwe("327"),
"G505": GetCwe("327"),
"G601": GetCwe("118"),
// ruleToCWE maps gosec rules to CWEs
var ruleToCWE = map[string]string{
"G101": "798",
"G102": "200",
"G103": "242",
"G104": "703",
"G106": "322",
"G107": "88",
"G108": "200",
"G109": "190",
"G110": "409",
"G201": "89",
"G202": "89",
"G203": "79",
"G204": "78",
"G301": "276",
"G302": "276",
"G303": "377",
"G304": "22",
"G305": "22",
"G306": "276",
"G307": "703",
"G401": "326",
"G402": "295",
"G403": "310",
"G404": "338",
"G501": "327",
"G502": "327",
"G503": "327",
"G504": "327",
"G505": "327",
"G601": "118",
}
// Issue is returned by a gosec rule if it discovers an issue with the scanned code.
type Issue struct {
Severity Score `json:"severity"` // issue severity (how problematic it is)
Confidence Score `json:"confidence"` // issue confidence (how sure we are we found it)
Cwe Cwe `json:"cwe"` // Cwe associated with RuleID
RuleID string `json:"rule_id"` // Human readable explanation
What string `json:"details"` // Human readable explanation
File string `json:"file"` // File name we found it in
Code string `json:"code"` // Impacted code line
Line string `json:"line"` // Line number in file
Col string `json:"column"` // Column number in line
Severity Score `json:"severity"` // issue severity (how problematic it is)
Confidence Score `json:"confidence"` // issue confidence (how sure we are we found it)
Cwe *cwe.Weakness `json:"cwe"` // Cwe associated with RuleID
RuleID string `json:"rule_id"` // Human readable explanation
What string `json:"details"` // Human readable explanation
File string `json:"file"` // File name we found it in
Code string `json:"code"` // Impacted code line
Line string `json:"line"` // Line number in file
Col string `json:"column"` // Column number in line
}
// FileLocation point out the file path and line number in file
@ -196,6 +195,6 @@ func NewIssue(ctx *Context, node ast.Node, ruleID, desc string, severity Score,
Confidence: confidence,
Severity: severity,
Code: code,
Cwe: IssueToCWE[ruleID],
Cwe: GetCweByRule(ruleID),
}
}

2
issue_test.go
View file

@ -42,7 +42,7 @@ var _ = Describe("Issue", func() {
Expect(issue.Code).Should(MatchRegexp(`"bar"`))
Expect(issue.Line).Should(Equal("2"))
Expect(issue.Col).Should(Equal("16"))
Expect(issue.Cwe.ID).Should(Equal(""))
Expect(issue.Cwe).Should(BeNil())
})
It("should return an error if specific context is not able to be obtained", func() {

3
report/csv/writer.go
View file

@ -2,7 +2,6 @@ package csv
import (
"encoding/csv"
"fmt"
"github.com/securego/gosec/v2/report/core"
"io"
)
@ -19,7 +18,7 @@ func WriteReport(w io.Writer, data *core.ReportInfo) error {
issue.Severity.String(),
issue.Confidence.String(),
issue.Code,
fmt.Sprintf("CWE-%s", issue.Cwe.ID),
issue.Cwe.SprintID(),
})
if err != nil {
return err

31
report/formatter_test.go
View file

@ -9,6 +9,7 @@ import (
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
"github.com/securego/gosec/v2"
"github.com/securego/gosec/v2/cwe"
"github.com/securego/gosec/v2/report/core"
"github.com/securego/gosec/v2/report/junit"
"github.com/securego/gosec/v2/report/sonar"
@ -16,13 +17,13 @@ import (
)
func createIssueWithFileWhat(file, what string) *gosec.Issue {
issue := createIssue("i1", gosec.GetCwe("G101"))
issue := createIssue("i1", gosec.GetCweByRule("G101"))
issue.File = file
issue.What = what
return &issue
}
func createIssue(ruleID string, cwe gosec.Cwe) gosec.Issue {
func createIssue(ruleID string, weakness *cwe.Weakness) gosec.Issue {
return gosec.Issue{
File: "/home/src/project/test.go",
Line: "1",
@ -32,12 +33,12 @@ func createIssue(ruleID string, cwe gosec.Cwe) gosec.Issue {
Confidence: gosec.High,
Severity: gosec.High,
Code: "1: testcode",
Cwe: cwe,
Cwe: weakness,
}
}
func createReportInfo(rule string, cwe gosec.Cwe) core.ReportInfo {
issue := createIssue(rule, cwe)
func createReportInfo(rule string, weakness *cwe.Weakness) core.ReportInfo {
issue := createIssue(rule, weakness)
metrics := gosec.Metrics{}
return core.ReportInfo{
Errors: map[string][]gosec.Error{},
@ -284,7 +285,7 @@ var _ = Describe("Formatter", func() {
It("csv formatted report should contain the CWE mapping", func() {
for _, rule := range grules {
cwe := gosec.IssueToCWE[rule]
cwe := gosec.GetCweByRule(rule)
issue := createIssue(rule, cwe)
error := map[string][]gosec.Error{}
@ -298,7 +299,7 @@ var _ = Describe("Formatter", func() {
})
It("xml formatted report should contain the CWE mapping", func() {
for _, rule := range grules {
cwe := gosec.IssueToCWE[rule]
cwe := gosec.GetCweByRule(rule)
issue := createIssue(rule, cwe)
error := map[string][]gosec.Error{}
@ -312,7 +313,7 @@ var _ = Describe("Formatter", func() {
})
It("json formatted report should contain the CWE mapping", func() {
for _, rule := range grules {
cwe := gosec.IssueToCWE[rule]
cwe := gosec.GetCweByRule(rule)
issue := createIssue(rule, cwe)
error := map[string][]gosec.Error{}
@ -332,7 +333,7 @@ var _ = Describe("Formatter", func() {
})
It("html formatted report should contain the CWE mapping", func() {
for _, rule := range grules {
cwe := gosec.IssueToCWE[rule]
cwe := gosec.GetCweByRule(rule)
issue := createIssue(rule, cwe)
error := map[string][]gosec.Error{}
@ -352,7 +353,7 @@ var _ = Describe("Formatter", func() {
})
It("yaml formatted report should contain the CWE mapping", func() {
for _, rule := range grules {
cwe := gosec.IssueToCWE[rule]
cwe := gosec.GetCweByRule(rule)
issue := createIssue(rule, cwe)
error := map[string][]gosec.Error{}
@ -372,7 +373,7 @@ var _ = Describe("Formatter", func() {
})
It("junit-xml formatted report should contain the CWE mapping", func() {
for _, rule := range grules {
cwe := gosec.IssueToCWE[rule]
cwe := gosec.GetCweByRule(rule)
issue := createIssue(rule, cwe)
error := map[string][]gosec.Error{}
@ -392,7 +393,7 @@ var _ = Describe("Formatter", func() {
})
It("text formatted report should contain the CWE mapping", func() {
for _, rule := range grules {
cwe := gosec.IssueToCWE[rule]
cwe := gosec.GetCweByRule(rule)
issue := createIssue(rule, cwe)
error := map[string][]gosec.Error{}
@ -412,7 +413,7 @@ var _ = Describe("Formatter", func() {
})
It("sonarqube formatted report shouldn't contain the CWE mapping", func() {
for _, rule := range grules {
cwe := gosec.IssueToCWE[rule]
cwe := gosec.GetCweByRule(rule)
issue := createIssue(rule, cwe)
error := map[string][]gosec.Error{}
buf := new(bytes.Buffer)
@ -432,7 +433,7 @@ var _ = Describe("Formatter", func() {
})
It("golint formatted report should contain the CWE mapping", func() {
for _, rule := range grules {
cwe := gosec.IssueToCWE[rule]
cwe := gosec.GetCweByRule(rule)
issue := createIssue(rule, cwe)
error := map[string][]gosec.Error{}
@ -446,7 +447,7 @@ var _ = Describe("Formatter", func() {
})
It("sarif formatted report should contain the CWE mapping", func() {
for _, rule := range grules {
cwe := gosec.IssueToCWE[rule]
cwe := gosec.GetCweByRule(rule)
issue := createIssue(rule, cwe)
error := map[string][]gosec.Error{}

2
report/golint/writer.go
View file

@ -15,7 +15,7 @@ func WriteReport(w io.Writer, data *core.ReportInfo) error {
for _, issue := range data.Issues {
what := issue.What
if issue.Cwe.ID != "" {
what = fmt.Sprintf("[CWE-%s] %s", issue.Cwe.ID, issue.What)
what = fmt.Sprintf("[%s] %s", issue.Cwe.SprintID(), issue.What)
}
// issue.Line uses "start-end" format for multiple line detection.

25
report/sarif/formatter.go
View file

@ -19,7 +19,6 @@ const (
sarifNote = sarifLevel("note")
sarifWarning = sarifLevel("warning")
sarifError = sarifLevel("error")
cweAcronym = "CWE"
)
//GenerateReport Convert a gosec report to a Sarif Report
@ -36,7 +35,7 @@ func GenerateReport(rootPaths []string, data *core.ReportInfo) (*Report, error)
results := []*Result{}
taxa := make([]*ReportingDescriptor, 0)
weaknesses := make(map[string]cwe.Weakness)
weaknesses := make(map[string]*cwe.Weakness)
for _, issue := range data.Issues {
_, ok := weaknesses[issue.Cwe.ID]
@ -117,18 +116,18 @@ func parseSarifRule(issue *gosec.Issue) *ReportingDescriptor {
Level: getSarifLevel(issue.Severity.String()),
},
Relationships: []*ReportingDescriptorRelationship{
buildSarifReportingDescriptorRelationship(issue.Cwe.ID),
buildSarifReportingDescriptorRelationship(issue.Cwe),
},
}
}
func buildSarifReportingDescriptorRelationship(weaknessID string) *ReportingDescriptorRelationship {
func buildSarifReportingDescriptorRelationship(weakness *cwe.Weakness) *ReportingDescriptorRelationship {
return &ReportingDescriptorRelationship{
Target: &ReportingDescriptorReference{
ID: weaknessID,
GUID: uuid3(cweAcronym + weaknessID),
ID: weakness.ID,
GUID: uuid3(weakness.SprintID()),
ToolComponent: &ToolComponentReference{
Name: cweAcronym,
Name: cwe.Acronym,
},
},
Kinds: []string{"superset"},
@ -149,7 +148,7 @@ func buildSarifTaxonomies(taxa []*ReportingDescriptor) []*ToolComponent {
func buildCWETaxonomy(version string, taxa []*ReportingDescriptor) *ToolComponent {
return &ToolComponent{
Name: cweAcronym,
Name: cwe.Acronym,
Version: version,
ReleaseDateUtc: "2021-03-15",
InformationURI: fmt.Sprintf("https://cwe.mitre.org/data/published/cwe_v%s.pdf/", version),
@ -158,19 +157,19 @@ func buildCWETaxonomy(version string, taxa []*ReportingDescriptor) *ToolComponen
ShortDescription: &MultiformatMessageString{
Text: "The MITRE Common Weakness Enumeration",
},
GUID: uuid3(cweAcronym),
GUID: uuid3(cwe.Acronym),
IsComprehensive: true,
MinimumRequiredLocalizedDataSemanticVersion: version,
Taxa: taxa,
}
}
func parseSarifTaxon(weakness cwe.Weakness) *ReportingDescriptor {
func parseSarifTaxon(weakness *cwe.Weakness) *ReportingDescriptor {
return &ReportingDescriptor{
ID: weakness.ID,
Name: weakness.Name,
GUID: uuid3(cweAcronym + weakness.ID),
HelpURI: weakness.URL(),
GUID: uuid3(weakness.SprintID()),
HelpURI: weakness.SprintURL(),
ShortDescription: &MultiformatMessageString{
Text: weakness.Description,
},
@ -189,7 +188,7 @@ func buildSarifDriver(rules []*ReportingDescriptor) *ToolComponent {
Name: "gosec",
Version: gosecVersion,
SupportedTaxonomies: []*ToolComponentReference{
{Name: cweAcronym, GUID: uuid3(cweAcronym)},
{Name: cwe.Acronym, GUID: uuid3(cwe.Acronym)},
},
InformationURI: "https://github.com/securego/gosec/",
Rules: rules,

2
report/text/template.go
View file

@ -8,7 +8,7 @@ Golang errors in file: [{{ $filePath }}]:
{{end}}
{{end}}
{{ range $index, $issue := .Issues }}
[{{ highlight $issue.FileLocation $issue.Severity }}] - {{ $issue.RuleID }} (CWE-{{ $issue.Cwe.ID }}): {{ $issue.What }} (Confidence: {{ $issue.Confidence}}, Severity: {{ $issue.Severity }})
[{{ highlight $issue.FileLocation $issue.Severity }}] - {{ $issue.RuleID }} ({{ $issue.Cwe.SprintID }}): {{ $issue.What }} (Confidence: {{ $issue.Confidence}}, Severity: {{ $issue.Severity }})
{{ printCode $issue }}
{{ end }}