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vulnerability_provider.go
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/
vulnerability_provider.go
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package db
import (
"fmt"
"github.com/facebookincubator/nvdtools/wfn"
cpeUtil "github.com/anchore/grype/grype/cpe"
grypeDB "github.com/anchore/grype/grype/db/v5"
"github.com/anchore/grype/grype/db/v5/namespace"
"github.com/anchore/grype/grype/distro"
"github.com/anchore/grype/grype/pkg"
"github.com/anchore/grype/grype/vulnerability"
"github.com/anchore/grype/internal/log"
"github.com/anchore/syft/syft/cpe"
syftPkg "github.com/anchore/syft/syft/pkg"
)
var _ vulnerability.Provider = (*VulnerabilityProvider)(nil)
type VulnerabilityProvider struct {
namespaceIndex *namespace.Index
reader grypeDB.VulnerabilityStoreReader
}
func NewVulnerabilityProvider(reader grypeDB.VulnerabilityStoreReader) (*VulnerabilityProvider, error) {
namespaces, err := reader.GetVulnerabilityNamespaces()
if err != nil {
return nil, fmt.Errorf("unable to get namespaces from store: %w", err)
}
namespaceIndex, err := namespace.FromStrings(namespaces)
if err != nil {
return nil, fmt.Errorf("unable to parse namespaces from store: %w", err)
}
return &VulnerabilityProvider{
namespaceIndex: namespaceIndex,
reader: reader,
}, nil
}
func (pr *VulnerabilityProvider) Get(id, namespace string) ([]vulnerability.Vulnerability, error) {
// note: getting a vulnerability record by id doesn't necessarily return a single record
// since records are duplicated by the set of fixes they have.
vulns, err := pr.reader.GetVulnerability(namespace, id)
if err != nil {
return nil, fmt.Errorf("provider failed to fetch namespace=%q pkg=%q: %w", namespace, id, err)
}
var results []vulnerability.Vulnerability
for _, vuln := range vulns {
vulnObj, err := vulnerability.NewVulnerability(vuln)
if err != nil {
return nil, fmt.Errorf("provider failed to inflate vulnerability record (namespace=%q id=%q): %w", vuln.Namespace, vuln.ID, err)
}
results = append(results, *vulnObj)
}
return results, nil
}
func (pr *VulnerabilityProvider) GetByDistro(d *distro.Distro, p pkg.Package) ([]vulnerability.Vulnerability, error) {
if d == nil {
return nil, nil
}
var vulnerabilities []vulnerability.Vulnerability
namespaces := pr.namespaceIndex.NamespacesForDistro(d)
if len(namespaces) == 0 {
log.Debugf("no vulnerability namespaces found in grype database for distro=%s package=%s", d.String(), p.Name)
return vulnerabilities, nil
}
vulnerabilities = make([]vulnerability.Vulnerability, 0)
for _, n := range namespaces {
for _, packageName := range n.Resolver().Resolve(p) {
nsStr := n.String()
allPkgVulns, err := pr.reader.SearchForVulnerabilities(nsStr, packageName)
if err != nil {
return nil, fmt.Errorf("provider failed to search for vulnerabilities (namespace=%q pkg=%q): %w", nsStr, packageName, err)
}
for _, vuln := range allPkgVulns {
vulnObj, err := vulnerability.NewVulnerability(vuln)
if err != nil {
return nil, fmt.Errorf("provider failed to inflate vulnerability record (namespace=%q id=%q distro=%q): %w", vuln.Namespace, vuln.ID, d, err)
}
vulnerabilities = append(vulnerabilities, *vulnObj)
}
}
}
return vulnerabilities, nil
}
func (pr *VulnerabilityProvider) GetByLanguage(l syftPkg.Language, p pkg.Package) ([]vulnerability.Vulnerability, error) {
var vulnerabilities []vulnerability.Vulnerability
namespaces := pr.namespaceIndex.NamespacesForLanguage(l)
if len(namespaces) == 0 {
log.Debugf("no vulnerability namespaces found in grype database for language=%s package=%s", l, p.Name)
return vulnerabilities, nil
}
vulnerabilities = make([]vulnerability.Vulnerability, 0)
for _, n := range namespaces {
for _, packageName := range n.Resolver().Resolve(p) {
nsStr := n.String()
allPkgVulns, err := pr.reader.SearchForVulnerabilities(nsStr, packageName)
if err != nil {
return nil, fmt.Errorf("provider failed to fetch namespace=%q pkg=%q: %w", nsStr, packageName, err)
}
for _, vuln := range allPkgVulns {
vulnObj, err := vulnerability.NewVulnerability(vuln)
if err != nil {
return nil, fmt.Errorf("provider failed to inflate vulnerability record (namespace=%q id=%q language=%q): %w", vuln.Namespace, vuln.ID, l, err)
}
vulnerabilities = append(vulnerabilities, *vulnObj)
}
}
}
return vulnerabilities, nil
}
func (pr *VulnerabilityProvider) GetByCPE(requestCPE cpe.CPE) ([]vulnerability.Vulnerability, error) {
vulns := make([]vulnerability.Vulnerability, 0)
namespaces := pr.namespaceIndex.CPENamespaces()
if len(namespaces) == 0 {
log.Debugf("no vulnerability namespaces found for arbitrary CPEs in grype database")
return nil, nil
}
if requestCPE.Product == wfn.Any || requestCPE.Product == wfn.NA {
return nil, fmt.Errorf("product name is required")
}
for _, ns := range namespaces {
allPkgVulns, err := pr.reader.SearchForVulnerabilities(ns.String(), ns.Resolver().Normalize(requestCPE.Product))
if err != nil {
return nil, fmt.Errorf("provider failed to fetch namespace=%q product=%q: %w", ns, requestCPE.Product, err)
}
normalizedRequestCPE, err := cpe.New(ns.Resolver().Normalize(requestCPE.BindToFmtString()))
if err != nil {
normalizedRequestCPE = requestCPE
}
for _, vuln := range allPkgVulns {
vulnCPEs, err := cpeUtil.NewSlice(vuln.CPEs...)
if err != nil {
return nil, err
}
// compare the request CPE to the potential matches (excluding version, which is handled downstream)
candidateMatchCpes := cpeUtil.MatchWithoutVersion(normalizedRequestCPE, vulnCPEs)
if len(candidateMatchCpes) > 0 {
vulnObj, err := vulnerability.NewVulnerability(vuln)
if err != nil {
return nil, fmt.Errorf("provider failed to inflate vulnerability record (namespace=%q id=%q cpe=%q): %w", vuln.Namespace, vuln.ID, requestCPE.BindToFmtString(), err)
}
vulnObj.CPEs = candidateMatchCpes
vulns = append(vulns, *vulnObj)
}
}
}
return vulns, nil
}