Loading vulnerability…
GitLab Signed Commit Metadata Validation Bypass
CVE-2023-2030 is an improper cryptographic signature verification vulnerability in GitLab Community Edition and Enterprise Edition. Commit signature validation ignores headers placed after the signature, which can allow an attacker to potentially modify metadata associated with a signed commit without that metadata being covered by the validation process. It affects GitLab versions from 12.2 before 16.5.6, 16.6 before 16.6.4, and 16.7 before 16.7.2.
What it means and what to do now: patch path, interim mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
An attacker may be able to alter the metadata of a signed commit while GitLab validates the commit signature. This undermines the integrity assurance users derive from signed-commit metadata.
If you can’t patch tonight, do this now.
No specific workaround is documented beyond applying the GitLab security update. Until patched, treat signed-commit metadata as potentially untrustworthy when assessing commit provenance or enforcing policies based on that metadata.
Patch, then assume compromise.
Upgrade GitLab CE/EE to a fixed release: 16.5.6 or later for the 16.5 branch, 16.6.4 or later for the 16.6 branch, or 16.7.2 or later for the 16.7 branch. Later maintenance releases 16.5.7, 16.6.5, 16.7.3, or newer are preferable because they also address an additional database-migration issue in the earlier patch set.
No public exploits tracked yet. Mallory keeps watching.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.