CVE-2022-35929
Last modified
CVE-2022-35929 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 0.54% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Sigstore | Cosign | < 1.10.1 |
References
- https://github.com/sigstore/cosign/commit/c5fda01a8ff33ca981f45a9f13e7fb6bd2080b94Exploit, Patch, Third Party Advisory
- https://github.com/sigstore/cosign/security/advisories/GHSA-vjxv-45g9-9296Exploit, Third Party Advisory
- https://github.com/sigstore/cosign/commit/c5fda01a8ff33ca981f45a9f13e7fb6bd2080b94Exploit, Patch, Third Party Advisory
- https://github.com/sigstore/cosign/security/advisories/GHSA-vjxv-45g9-9296Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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