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Co-Authored-By: stefan <stefan_paksa@icloud.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,167 @@ | ||
| package alt | ||
|
|
||
| import ( | ||
| "context" | ||
| "sort" | ||
| "strings" | ||
| "time" | ||
|
|
||
| dbTypes "github.com/aquasecurity/trivy-db/pkg/types" | ||
| ustrings "github.com/aquasecurity/trivy-db/pkg/utils/strings" | ||
| "github.com/aquasecurity/trivy-db/pkg/vulnsrc/alt" | ||
| "github.com/aquasecurity/trivy-db/pkg/vulnsrc/vulnerability" | ||
| osver "github.com/aquasecurity/trivy/pkg/detector/ospkg/version" | ||
| ftypes "github.com/aquasecurity/trivy/pkg/fanal/types" | ||
| "github.com/aquasecurity/trivy/pkg/log" | ||
| "github.com/aquasecurity/trivy/pkg/scanner/utils" | ||
| "github.com/aquasecurity/trivy/pkg/types" | ||
| "github.com/cheggaaa/pb/v3" | ||
| version "github.com/knqyf263/go-rpm-version" | ||
| "golang.org/x/exp/maps" | ||
| "golang.org/x/exp/slices" | ||
| "golang.org/x/xerrors" | ||
| "k8s.io/utils/clock" | ||
| ) | ||
|
|
||
| var ( | ||
| eolDates = map[string]time.Time{ | ||
| "p9": time.Date(2023, 12, 31, 23, 59, 59, 0, time.UTC), | ||
| "p10": time.Date(2024, 6, 30, 23, 59, 59, 0, time.UTC), | ||
| "c10f1": time.Date(2024, 6, 30, 23, 59, 59, 0, time.UTC), | ||
| } | ||
| ) | ||
|
|
||
| type options struct { | ||
| clock clock.Clock | ||
| } | ||
|
|
||
| type option func(*options) | ||
|
|
||
| func WithClock(clock clock.Clock) option { | ||
| return func(opts *options) { | ||
| opts.clock = clock | ||
| } | ||
| } | ||
|
|
||
| // Scanner implements the ALT scanner with ALT` vuln source | ||
| type Scanner struct { | ||
| vs alt.VulnSrc | ||
| *options | ||
| } | ||
|
|
||
| // NewScanner is the factory method for Scanner | ||
| func NewScanner(opts ...option) *Scanner { | ||
| o := &options{ | ||
| clock: clock.RealClock{}, | ||
| } | ||
|
|
||
| for _, opt := range opts { | ||
| opt(o) | ||
| } | ||
| return &Scanner{ | ||
| vs: alt.NewVulnSrc(), | ||
| options: o, | ||
| } | ||
| } | ||
|
|
||
| // IsSupportedVersion checks the OSFamily can be scanned using ALT scanner | ||
| func (s *Scanner) IsSupportedVersion(ctx context.Context, osFamily ftypes.OSType, osVer string) bool { | ||
| return osver.Supported(ctx, eolDates, osFamily, osVer) | ||
| } | ||
|
|
||
| func (s *Scanner) Detect(cpe string, _ *ftypes.Repository, pkgs []ftypes.Package) ([]types.DetectedVulnerability, error) { | ||
| log.Logger.Info("Detecting ALT vulnerabilities...") | ||
| log.Logger.Debugf("ALT: os version: %s", fromCPE(cpe)) | ||
| log.Logger.Debugf("ALT: the number of packages: %d", len(pkgs)) | ||
|
|
||
| var vulns []types.DetectedVulnerability | ||
| p := pb.New(len(pkgs)) | ||
| p.Start() | ||
| for _, pkg := range pkgs { | ||
| detectedVulns, err := s.detect(cpe, pkg) | ||
| if err != nil { | ||
| return nil, xerrors.Errorf("ALT vulnerability detection error: %w", err) | ||
| } | ||
| vulns = append(vulns, detectedVulns...) | ||
| p.Increment() | ||
| } | ||
| p.Finish() | ||
| return vulns, nil | ||
| } | ||
|
|
||
| func (s *Scanner) detect(cpe string, pkg ftypes.Package) ([]types.DetectedVulnerability, error) { | ||
| advisories, err := s.vs.Get(pkg.Name, cpe) | ||
| if err != nil { | ||
| return nil, xerrors.Errorf("failed to get ALT advisories: %w", err) | ||
| } | ||
|
|
||
| installed := utils.FormatVersion(pkg) | ||
| installedVersion := version.NewVersion(installed) | ||
|
|
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| uniqVulns := map[string]types.DetectedVulnerability{} | ||
| for _, adv := range advisories { | ||
| if len(adv.Arches) != 0 && pkg.Arch != "noarch" { | ||
| if !slices.Contains(adv.Arches, pkg.Arch) { | ||
| continue | ||
| } | ||
| } | ||
| vulnID := adv.VulnerabilityID | ||
| vuln := types.DetectedVulnerability{ | ||
| VulnerabilityID: vulnID, | ||
| PkgID: pkg.ID, | ||
| PkgName: pkg.Name, | ||
| InstalledVersion: utils.FormatVersion(pkg), | ||
| PkgIdentifier: pkg.Identifier, | ||
| Layer: pkg.Layer, | ||
| SeveritySource: vulnerability.ALT, | ||
| Vulnerability: dbTypes.Vulnerability{ | ||
| Severity: adv.Severity.String(), | ||
| }, | ||
| Custom: adv.Custom, | ||
| } | ||
|
|
||
| if adv.FixedVersion == "" { | ||
| if _, ok := uniqVulns[vulnID]; !ok { | ||
| uniqVulns[vulnID] = vuln | ||
| } | ||
| continue | ||
| } | ||
|
|
||
| fixedVersion := version.NewVersion(adv.FixedVersion) | ||
| if installedVersion.LessThan(fixedVersion) { | ||
| vuln.VendorIDs = adv.VendorIDs | ||
| vuln.FixedVersion = fixedVersion.String() | ||
|
|
||
| if v, ok := uniqVulns[vulnID]; ok { | ||
| v.VendorIDs = ustrings.Unique(append(v.VendorIDs, vuln.VendorIDs...)) | ||
|
|
||
| if version.NewVersion(v.FixedVersion).LessThan(fixedVersion) { | ||
| v.FixedVersion = vuln.FixedVersion | ||
| } | ||
| uniqVulns[vulnID] = v | ||
| } else { | ||
| uniqVulns[vulnID] = vuln | ||
| } | ||
| } | ||
| } | ||
|
|
||
| vulns := maps.Values(uniqVulns) | ||
| sort.Slice(vulns, func(i, j int) bool { | ||
| return vulns[i].VulnerabilityID < vulns[j].VulnerabilityID | ||
| }) | ||
|
|
||
| return vulns, nil | ||
| } | ||
|
|
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| func fromCPE(cpe string) string { | ||
| if strings.Contains(cpe, "sp") && strings.Contains(cpe, "10") { | ||
| return "c10f1" | ||
| } | ||
| if !strings.Contains(cpe, "sp") && strings.Contains(cpe, "10") { | ||
| return "p10" | ||
| } | ||
| if !strings.Contains(cpe, "sp") && strings.Contains(cpe, "9") { | ||
| return "p9" | ||
| } | ||
| return "undefined" | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,66 @@ | ||
| package alt | ||
|
|
||
| import ( | ||
| "bufio" | ||
| "context" | ||
| "os" | ||
| "strings" | ||
|
|
||
| "github.com/aquasecurity/trivy/pkg/fanal/analyzer" | ||
| fos "github.com/aquasecurity/trivy/pkg/fanal/analyzer/os" | ||
| "github.com/aquasecurity/trivy/pkg/fanal/types" | ||
| "golang.org/x/exp/slices" | ||
| "golang.org/x/xerrors" | ||
| ) | ||
|
|
||
| func init() { | ||
| analyzer.RegisterAnalyzer(&altOSAnalyzer{}) | ||
| } | ||
|
|
||
| const altAnalyzerVersion = 1 | ||
|
|
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| var requiredFiles = []string{"etc/os-release"} | ||
|
|
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| type altOSAnalyzer struct{} | ||
|
|
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| func (a altOSAnalyzer) Analyze(_ context.Context, input analyzer.AnalysisInput) (*analyzer.AnalysisResult, error) { | ||
| scanner := bufio.NewScanner(input.Content) | ||
| var cpe string | ||
| for scanner.Scan() { | ||
| line := scanner.Text() | ||
| ss := strings.SplitN(line, "=", 2) | ||
| if len(ss) != 2 { | ||
| continue | ||
| } | ||
| key, value := strings.TrimSpace(ss[0]), strings.TrimSpace(ss[1]) | ||
|
|
||
| switch key { | ||
| case "ID": | ||
| id := strings.Trim(value, `"'`) | ||
| if !strings.Contains(id, "altlinux") { | ||
| return nil, nil | ||
| } | ||
| continue | ||
| case "CPE_NAME": | ||
| cpe = strings.Trim(value, `"'`) | ||
| default: | ||
| continue | ||
| } | ||
| return &analyzer.AnalysisResult{ | ||
| OS: types.OS{Family: types.ALT, Name: cpe}, | ||
| }, nil | ||
| } | ||
| return nil, xerrors.Errorf("alt: %w", fos.AnalyzeOSError) | ||
| } | ||
|
|
||
| func (a altOSAnalyzer) Required(filePath string, _ os.FileInfo) bool { | ||
| return slices.Contains(requiredFiles, filePath) | ||
| } | ||
|
|
||
| func (a altOSAnalyzer) Type() analyzer.Type { | ||
| return analyzer.TypeALT | ||
| } | ||
|
|
||
| func (a altOSAnalyzer) Version() int { | ||
| return altAnalyzerVersion | ||
| } |
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