cve-2022-36056
Vulnerability from cvelistv5
Published
2022-09-14 19:50
Modified
2024-08-03 09:52
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Summary
Cosign is a project under the sigstore organization which aims to make signatures invisible infrastructure. In versions prior to 1.12.0 a number of vulnerabilities have been found in cosign verify-blob, where Cosign would successfully verify an artifact when verification should have failed. First a cosign bundle can be crafted to successfully verify a blob even if the embedded rekorBundle does not reference the given signature. Second, when providing identity flags, the email and issuer of a certificate is not checked when verifying a Rekor bundle, and the GitHub Actions identity is never checked. Third, providing an invalid Rekor bundle without the experimental flag results in a successful verification. And fourth an invalid transparency log entry will result in immediate success for verification. Details and examples of these issues can be seen in the GHSA-8gw7-4j42-w388 advisory linked. Users are advised to upgrade to 1.12.0. There are no known workarounds for these issues.
References
security-advisories@github.comhttps://github.com/sigstore/cosign/commit/80b79ed8b4d28ccbce3d279fd273606b5cddcc25Patch, Third Party Advisory
security-advisories@github.comhttps://github.com/sigstore/cosign/security/advisories/GHSA-8gw7-4j42-w388Exploit, Mitigation, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/sigstore/cosign/commit/80b79ed8b4d28ccbce3d279fd273606b5cddcc25Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/sigstore/cosign/security/advisories/GHSA-8gw7-4j42-w388Exploit, Mitigation, Patch, Third Party Advisory
Impacted products
Vendor Product Version
sigstore cosign Version: < 1.12.0
 Create a notification for this product.
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