CVE-2022-36056— cosign 数据伪造问题漏洞

Vulnerabilities with blob verification in sigstore cosign

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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

密码学签名的验证不恰当

cosign 数据伪造问题漏洞

cosign是美国的一个 OCI 注册表中的容器签名、验证和存储。 cosign 1.12.0之前版本存在数据伪造问题漏洞，该漏洞源于Bundle不匹配导致验证无效、在某些情况下不检查证书身份、没有实验标志的无效 Rekor bundle 、无效的透明日志条目。

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