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cve[email protected]CVE-2022-36056
HistorySep 14, 2022 - 8:15 p.m.

CVE-2022-36056

2022-09-1420:15:09
CWE-347
web.nvd.nist.gov
59
3
cosign
sigstore
vulnerability
verification
upgrade
ghsa-8gw7-4j42-w388
nvd

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

0.0004 Low

EPSS

Percentile

12.8%

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.

Affected configurations

Vulners
NVD
Node
sigstorecosignRange<1.12.0
VendorProductVersionCPE
sigstorecosign*cpe:2.3:a:sigstore:cosign:*:*:*:*:*:*:*:*

CNA Affected

[
  {
    "product": "cosign",
    "vendor": "sigstore",
    "versions": [
      {
        "status": "affected",
        "version": "< 1.12.0"
      }
    ]
  }
]

Social References

More

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

0.0004 Low

EPSS

Percentile

12.8%