{"id":"CVE-2022-36056","summary":" Vulnerabilities with blob verification in sigstore cosign","details":"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.","aliases":["BIT-cosign-2022-36056","GHSA-8gw7-4j42-w388","GO-2022-0998"],"modified":"2026-05-18T11:54:51.091456716Z","published":"2022-09-14T19:50:09Z","related":["SUSE-SU-2022:3486-1","openSUSE-SU-2024:12331-1"],"database_specific":{"cwe_ids":["CWE-347"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/36xxx/CVE-2022-36056.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/36xxx/CVE-2022-36056.json"},{"type":"ADVISORY","url":"https://github.com/sigstore/cosign/security/advisories/GHSA-8gw7-4j42-w388"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-36056"},{"type":"FIX","url":"https://github.com/sigstore/cosign/commit/80b79ed8b4d28ccbce3d279fd273606b5cddcc25"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/sigstore/cosign","events":[{"introduced":"0"},{"fixed":"8483d6c71f153f38f237ba79c88d0fda6306e6e3"}]}],"versions":["v1.11.1","v1.11.0","v1.10.1","v1.10.0","v1.10.0-rc.1","v1.9.0","v1.8.0","v1.7.2","v1.7.1","v1.7.0","v1.6.0","v1.5.1","v1.5.0","v1.4.1","v1.4.0","v1.3.1","v1.3.0","v1.2.1","v1.2.0","cosigned-v0.0.3-dev","cosigned-v0.0.2-dev","cosigned-v0.0.1-dev","v1.1.0","v1.0.1","v1.0.0","v0.6.0","v0.5.0","v0.4.0","v0.3.1","v0.3.0","v0.2.0","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-36056.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"}]}