Cosign's verify-blob-attestation reports false positive when payload parsing fails (sigstore cosign)
En bref
- Source
- NVD
- EPSS
- EPSS 0.24 % · centile 15 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- GitHub_M
- Statut NVD
- Analyzed
Description
Cosign provides code signing and transparency for containers and binaries. Prior to 3.0.6 and 2.6.3, cosign verify-blob-attestation may erroneously report a "Verified OK" result for attestations with malformed payloads or mismatched predicate types. For old-format bundles and detached signatures, this was due to a logic flaw in the error handling of the predicate type validation. For new-format bundles, the predicate type validation was bypassed completely. This vulnerability is fixed in 3.0.6 and 2.6.3.
Faiblesses (CWE)
- CWE-754 — Vérification incorrecte de conditions inhabituelles ou exceptionnelles
Références
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N | GitHub_M |
| CVSS 3.1 | MEDIUM 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N | NVD · security-advisories@github.com (Secondary) |
| CVSS 3.1 | MEDIUM 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N | NVD · nvd@nist.gov (Primary) |
Avis
- GHSA-w6c6-c85g-mmv6 — Cosign's verify-blob-attestation reports false positive when payload parsing fails
- GO-2026-5694 — Cosign's verify-blob-attestation reports false positive when payload parsing fails in github.com/sigstore/cosign
Références européennes
- ENISA EUVD · EUVD-2026-19919
- GCVE · GCVE-0-2026-39395
Configurations affectées (CPE NVD)
cpe:2.3:a:sigstore:cosign:*:*:*:*:*:*:*:*< 2.6.3cpe:2.3:a:sigstore:cosign:*:*:*:*:*:*:*:*≥ 3.0.0 < 3.0.6
Produits affectés
| Produit | Versions |
|---|---|
| sigstore · cosign | affected >= 3.0.0, < 3.0.6 ; affected < 2.6.3 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |