| Vulnerability Name: | CVE-2022-36056 (CCN-236269) | ||||||||||||
| Assigned: | 2022-09-14 | ||||||||||||
| Published: | 2022-09-14 | ||||||||||||
| Updated: | 2022-09-14 | ||||||||||||
| 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. | ||||||||||||
| CVSS v3 Severity: | 5.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N) 4.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C)
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| CVSS v2 Severity: | 4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:C/A:N)
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| Vulnerability Type: | CWE-347 | ||||||||||||
| Vulnerability Consequences: | Bypass Security | ||||||||||||
| References: | Source: MITRE Type: CNA CVE-2022-36056 Source: XF Type: UNKNOWN sigstore-cve202236056-sec-bypass(236269) Source: CCN Type: Cosign GIT Repository Vulnerabilities with blob verification | ||||||||||||
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