fix(nodejs): detect direct dependencies when using latest version f…

…or files `yarn.lock` + `package.json` (#7110)

pkg/dependency/parser/nodejs/yarn/parse.go

@@ -5,6 +5,7 @@ import (
 	"bytes"
 	"io"
 	"regexp"
+	"sort"
 	"strings"
 
 	"github.com/samber/lo"
@@ -127,7 +128,7 @@ func ignoreProtocol(protocol string) bool {
 	return false
 }
 
-func parseResults(patternIDs map[string]string, dependsOn map[string][]string) (deps []ftypes.Dependency) {
+func parseResults(patternIDs map[string]string, dependsOn map[string][]string) (deps ftypes.Dependencies) {
 	// find dependencies by patterns
 	for pkgID, depPatterns := range dependsOn {
 		depIDs := lo.Map(depPatterns, func(pattern string, index int) string {
@@ -269,14 +270,20 @@ func parseDependency(line string) (string, error) {
 	}
 }
 
-func (p *Parser) Parse(r xio.ReadSeekerAt) ([]ftypes.Package, []ftypes.Dependency, error) {
+func (p *Parser) Parse(r xio.ReadSeekerAt) ([]ftypes.Package, []ftypes.Dependency, map[string][]string, error) {
 	lineNumber := 1
-	var pkgs []ftypes.Package
+	var pkgs ftypes.Packages
 
-	// patternIDs holds mapping between patterns and library IDs
+	// patternIDs holds mapping between patterns and package IDs
 	// e.g. ajv@^6.5.5 => [email protected]
+	// This is needed to update dependencies from `DependsOn`.
 	patternIDs := make(map[string]string)
 
+	// patternIDs holds mapping between package ID and patterns
+	// e.g. `@babel/[email protected]` => [`@babel/helper-regex@^7.0.0`, `@babel/helper-regex@^7.4.4`]
+	// This is needed to compare package patterns with patterns from package.json files in `fanal` package.
+	pkgIDPatterns := make(map[string][]string)
+
 	scanner := bufio.NewScanner(r)
 	scanner.Split(p.scanBlocks)
 	dependsOn := make(map[string][]string)
@@ -285,7 +292,7 @@ func (p *Parser) Parse(r xio.ReadSeekerAt) ([]ftypes.Package, []ftypes.Dependenc
 		lib, deps, newLine, err := p.parseBlock(block, lineNumber)
 		lineNumber = newLine + 2
 		if err != nil {
-			return nil, nil, err
+			return nil, nil, nil, err
 		} else if lib.Name == "" {
 			continue
 		}
@@ -298,6 +305,7 @@ func (p *Parser) Parse(r xio.ReadSeekerAt) ([]ftypes.Package, []ftypes.Dependenc
 			Locations: []ftypes.Location{lib.Location},
 		})
 
+		pkgIDPatterns[pkgID] = lib.Patterns
 		for _, pattern := range lib.Patterns {
 			// e.g.
 			//   combined-stream@^1.0.6 => [email protected]
@@ -310,13 +318,16 @@ func (p *Parser) Parse(r xio.ReadSeekerAt) ([]ftypes.Package, []ftypes.Dependenc
 	}
 
 	if err := scanner.Err(); err != nil {
-		return nil, nil, xerrors.Errorf("failed to scan yarn.lock, got scanner error: %s", err.Error())
+		return nil, nil, nil, xerrors.Errorf("failed to scan yarn.lock, got scanner error: %s", err.Error())
 	}
 
-	// Replace dependency patterns with library IDs
+	// Replace dependency patterns with package IDs
 	// e.g. ajv@^6.5.5 => [email protected]
 	deps := parseResults(patternIDs, dependsOn)
-	return pkgs, deps, nil
+
+	sort.Sort(pkgs)
+	sort.Sort(deps)
+	return pkgs, deps, pkgIDPatterns, nil
 }
 
 func packageID(name, version string) string {

pkg/dependency/parser/nodejs/yarn/parse_test.go

@@ -301,32 +301,14 @@ func TestParse(t *testing.T) {
 			f, err := os.Open(tt.file)
 			require.NoError(t, err)
 
-			got, deps, err := NewParser().Parse(f)
+			got, deps, _, err := NewParser().Parse(f)
 			require.NoError(t, err)
 
-			sortPkgs(got)
-			sortPkgs(tt.want)
 			assert.Equal(t, tt.want, got)
 
 			if tt.wantDeps != nil {
-				sortDeps(deps)
-				sortDeps(tt.wantDeps)
 				assert.Equal(t, tt.wantDeps, deps)
 			}
 		})
 	}
 }
-
-func sortPkgs(pkgs ftypes.Packages) {
-	sort.Sort(pkgs)
-	for _, pkg := range pkgs {
-		sort.Sort(pkg.Locations)
-	}
-}
-
-func sortDeps(deps ftypes.Dependencies) {
-	sort.Sort(deps)
-	for _, dep := range deps {
-		sort.Strings(dep.DependsOn)
-	}
-}

pkg/fanal/analyzer/language/nodejs/yarn/testdata/latest-version/package.json

@@ -0,0 +1,8 @@
+{
+  "dependencies": {
+    "debug": "latest"
+  },
+  "devDependencies" : {
+    "js-tokens": "^9.0.0"
+  }
+}

pkg/fanal/analyzer/language/nodejs/yarn/testdata/latest-version/yarn.lock

@@ -0,0 +1,20 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+debug@latest:
+  version "4.3.5"
+  resolved "https://registry.npmjs.org/debug/-/debug-4.3.5.tgz"
+  integrity sha512-pt0bNEmneDIvdL1Xsd9oDQ/wrQRkXDT4AUWlNZNPKvW5x/jyO9VFXkJUP07vQ2upmw5PlaITaPKc31jK13V+jg==
+  dependencies:
+    ms "2.1.2"
+
+js-tokens@^9.0.0:
+  version "9.0.0"
+  resolved "https://registry.npmjs.org/js-tokens/-/js-tokens-9.0.0.tgz"
+  integrity sha512-WriZw1luRMlmV3LGJaR6QOJjWwgLUTf89OwT2lUOyjX2dJGBwgmIkbcz+7WFZjrZM635JOIR517++e/67CP9dQ==
+
+[email protected]:
+  version "2.1.2"
+  resolved "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz"
+  integrity sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==

pkg/fanal/analyzer/language/nodejs/yarn/yarn.go

@@ -10,13 +10,15 @@ import (
 	"path"
 	"path/filepath"
 	"regexp"
+	"slices"
 	"sort"
 	"strings"
 
 	"github.com/hashicorp/go-multierror"
 	"github.com/samber/lo"
 	"golang.org/x/xerrors"
 
+	"github.com/aquasecurity/trivy/pkg/dependency"
 	"github.com/aquasecurity/trivy/pkg/dependency/parser/nodejs/packagejson"
 	"github.com/aquasecurity/trivy/pkg/dependency/parser/nodejs/yarn"
 	"github.com/aquasecurity/trivy/pkg/detector/library/compare/npm"
@@ -42,7 +44,6 @@ var fragmentRegexp = regexp.MustCompile(`(\S+):(@?.*?)(@(.*?)|)$`)
 type yarnAnalyzer struct {
 	logger            *log.Logger
 	packageJsonParser *packagejson.Parser
-	lockParser        language.Parser
 	comparer          npm.Comparer
 	license           *license.License
 }
@@ -51,12 +52,21 @@ func newYarnAnalyzer(opt analyzer.AnalyzerOptions) (analyzer.PostAnalyzer, error
 	return &yarnAnalyzer{
 		logger:            log.WithPrefix("yarn"),
 		packageJsonParser: packagejson.NewParser(),
-		lockParser:        yarn.NewParser(),
 		comparer:          npm.Comparer{},
 		license:           license.NewLicense(opt.LicenseScannerOption.ClassifierConfidenceLevel),
 	}, nil
 }
 
+type parserWithPatterns struct {
+	patterns map[string][]string
+}
+
+func (p *parserWithPatterns) Parse(r xio.ReadSeekerAt) ([]types.Package, []types.Dependency, error) {
+	pkgs, deps, patterns, err := yarn.NewParser().Parse(r)
+	p.patterns = patterns
+	return pkgs, deps, err
+}
+
 func (a yarnAnalyzer) PostAnalyze(_ context.Context, input analyzer.PostAnalysisInput) (*analyzer.AnalysisResult, error) {
 	var apps []types.Application
 
@@ -65,8 +75,9 @@ func (a yarnAnalyzer) PostAnalyze(_ context.Context, input analyzer.PostAnalysis
 	}
 
 	err := fsutils.WalkDir(input.FS, ".", required, func(filePath string, d fs.DirEntry, r io.Reader) error {
+		parser := &parserWithPatterns{}
 		// Parse yarn.lock
-		app, err := a.parseYarnLock(filePath, r)
+		app, err := language.Parse(types.Yarn, filePath, r, parser)
 		if err != nil {
 			return xerrors.Errorf("parse error: %w", err)
 		} else if app == nil {
@@ -79,7 +90,7 @@ func (a yarnAnalyzer) PostAnalyze(_ context.Context, input analyzer.PostAnalysis
 		}
 
 		// Parse package.json alongside yarn.lock to find direct deps and mark dev deps
-		if err = a.analyzeDependencies(input.FS, path.Dir(filePath), app); err != nil {
+		if err = a.analyzeDependencies(input.FS, path.Dir(filePath), app, parser.patterns); err != nil {
 			a.logger.Warn("Unable to parse package.json to remove dev dependencies",
 				log.FilePath(path.Join(path.Dir(filePath), types.NpmPkg)), log.Err(err))
 		}
@@ -147,13 +158,9 @@ func (a yarnAnalyzer) Version() int {
 	return version
 }
 
-func (a yarnAnalyzer) parseYarnLock(filePath string, r io.Reader) (*types.Application, error) {
-	return language.Parse(types.Yarn, filePath, r, a.lockParser)
-}
-
 // analyzeDependencies analyzes the package.json file next to yarn.lock,
 // distinguishing between direct and transitive dependencies as well as production and development dependencies.
-func (a yarnAnalyzer) analyzeDependencies(fsys fs.FS, dir string, app *types.Application) error {
+func (a yarnAnalyzer) analyzeDependencies(fsys fs.FS, dir string, app *types.Application, patterns map[string][]string) error {
 	packageJsonPath := path.Join(dir, types.NpmPkg)
 	directDeps, directDevDeps, err := a.parsePackageJsonDependencies(fsys, packageJsonPath)
 	if errors.Is(err, fs.ErrNotExist) {
@@ -170,13 +177,13 @@ func (a yarnAnalyzer) analyzeDependencies(fsys fs.FS, dir string, app *types.App
 	})
 
 	// Walk prod dependencies
-	pkgs, err := a.walkDependencies(app.Packages, pkgIDs, directDeps, false)
+	pkgs, err := a.walkDependencies(app.Packages, pkgIDs, directDeps, patterns, false)
 	if err != nil {
 		return xerrors.Errorf("unable to walk dependencies: %w", err)
 	}
 
 	// Walk dev dependencies
-	devPkgs, err := a.walkDependencies(app.Packages, pkgIDs, directDevDeps, true)
+	devPkgs, err := a.walkDependencies(app.Packages, pkgIDs, directDevDeps, patterns, true)
 	if err != nil {
 		return xerrors.Errorf("unable to walk dependencies: %w", err)
 	}
@@ -194,7 +201,7 @@ func (a yarnAnalyzer) analyzeDependencies(fsys fs.FS, dir string, app *types.App
 }
 
 func (a yarnAnalyzer) walkDependencies(pkgs []types.Package, pkgIDs map[string]types.Package,
-	directDeps map[string]string, dev bool) (map[string]types.Package, error) {
+	directDeps map[string]string, patterns map[string][]string, dev bool) (map[string]types.Package, error) {
 
 	// Identify direct dependencies
 	directPkgs := make(map[string]types.Package)
@@ -211,11 +218,16 @@ func (a yarnAnalyzer) walkDependencies(pkgs []types.Package, pkgIDs map[string]t
 			constraint = m[4]
 		}
 
-		// npm has own comparer to compare versions
-		if match, err := a.comparer.MatchVersion(pkg.Version, constraint); err != nil {
-			return nil, xerrors.Errorf("unable to match version for %s", pkg.Name)
-		} else if !match {
-			continue
+		// Try to find an exact match to the pattern.
+		// In some cases, patterns from yarn.lock and package.json may not match (e.g., yarn v2 uses the allowed version for ID).
+		// Therefore, if the patterns don't match - compare versions.
+		if pkgPatterns, found := patterns[pkg.ID]; !found || !slices.Contains(pkgPatterns, dependency.ID(types.Yarn, pkg.Name, constraint)) {
+			// npm has own comparer to compare versions
+			if match, err := a.comparer.MatchVersion(pkg.Version, constraint); err != nil {
+				return nil, xerrors.Errorf("unable to match version for %s", pkg.Name)
+			} else if !match {
+				continue
+			}
 		}
 
 		// Mark as a direct dependency

pkg/fanal/analyzer/language/nodejs/yarn/yarn_test.go

@@ -354,6 +354,61 @@ func Test_yarnLibraryAnalyzer_Analyze(t *testing.T) {
 				},
 			},
 		},
+		{
+			name: "package uses `latest` version",
+			dir:  "testdata/latest-version",
+			want: &analyzer.AnalysisResult{
+				Applications: []types.Application{
+					{
+						Type:     types.Yarn,
+						FilePath: "yarn.lock",
+						Packages: types.Packages{
+							{
+								ID:           "[email protected]",
+								Name:         "debug",
+								Version:      "4.3.5",
+								Relationship: types.RelationshipDirect,
+								Locations: []types.Location{
+									{
+										StartLine: 5,
+										EndLine:   10,
+									},
+								},
+								DependsOn: []string{
+									"[email protected]",
+								},
+							},
+							{
+								ID:           "[email protected]",
+								Name:         "js-tokens",
+								Version:      "9.0.0",
+								Relationship: types.RelationshipDirect,
+								Dev:          true,
+								Locations: []types.Location{
+									{
+										StartLine: 12,
+										EndLine:   15,
+									},
+								},
+							},
+							{
+								ID:           "[email protected]",
+								Name:         "ms",
+								Version:      "2.1.2",
+								Indirect:     true,
+								Relationship: types.RelationshipIndirect,
+								Locations: []types.Location{
+									{
+										StartLine: 17,
+										EndLine:   20,
+									},
+								},
+							},
+						},
+					},
+				},
+			},
+		},
 		{
 			name: "happy path with alias rewrite",
 			dir:  "testdata/alias",