Vulnerability Description
cosign is a container signing and verification utility. In versions prior to 1.10.1 cosign can report a false positive if any attestation exists. `cosign verify-attestation` used with the `--type` flag will report a false positive verification when there is at least one attestation with a valid signature and there are NO attestations of the type being verified (--type defaults to "custom"). This can happen when signing with a standard keypair and with "keyless" signing with Fulcio. This vulnerability can be reproduced with the `distroless.dev/static@sha256:dd7614b5a12bc4d617b223c588b4e0c833402b8f4991fb5702ea83afad1986e2` image. This image has a `vuln` attestation but not an `spdx` attestation. However, if you run `cosign verify-attestation --type=spdx` on this image, it incorrectly succeeds. This issue has been addressed in version 1.10.1 of cosign. Users are advised to upgrade. There are no known workarounds for this issue.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Sigstore | Cosign | < 1.10.1 |
Related Weaknesses (CWE)
References
- https://github.com/sigstore/cosign/commit/c5fda01a8ff33ca981f45a9f13e7fb6bd2080bExploitPatchThird Party Advisory
- https://github.com/sigstore/cosign/security/advisories/GHSA-vjxv-45g9-9296ExploitThird Party Advisory
- https://github.com/sigstore/cosign/commit/c5fda01a8ff33ca981f45a9f13e7fb6bd2080bExploitPatchThird Party Advisory
- https://github.com/sigstore/cosign/security/advisories/GHSA-vjxv-45g9-9296ExploitThird Party Advisory
FAQ
What is CVE-2022-35929?
CVE-2022-35929 is a vulnerability with a CVSS score of 7.1 (HIGH). cosign is a container signing and verification utility. In versions prior to 1.10.1 cosign can report a false positive if any attestation exists. `cosign verify-attestation` used with the `--type` fla...
How severe is CVE-2022-35929?
CVE-2022-35929 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-35929?
Check the references section above for vendor advisories and patch information. Affected products include: Sigstore Cosign.