CVE-2024-56138

MEDIUM4.0EPSS 0.01%

notation-go's timestamp signature generation lacks certificate revocation check

Published: 1/13/2025Modified: 2/4/2026
Also known as:GHSA-45v3-38pc-874vCGA-fhf8-fh2w-vggpGO-2025-3381

Description

This issue was identified during Quarkslab's audit of the timestamp feature. ### Summary During the timestamp signature generation, the revocation status of the certificate(s) used to generate the timestamp signature was not verified. ### Details During timestamp signature generation, notation-go did not check the revocation status of the certificate chain used by the TSA. This oversight creates a vulnerability that could be exploited through a Man-in-The-Middle attack. An attacker could potentially use a compromised, intermediate, or revoked leaf certificate to generate a malicious countersignature, which would then be accepted and stored by `notation`. ### Impact This could lead to denial of service scenarios, particularly in CI/CD environments during signature verification processes because timestamp signature would fail due to the presence of a revoked certificate(s) potentially disrupting operations.

Affected packages (3)

CVSS scores

SourceVersionSeverityVector
osvCVSS 3.1MEDIUM4.0CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References (7)