Vulnerability · Published Dec 15, 2023 · Assigned by GitLab

CVE-2023-6680Improper Certificate Validation in GitLab

High 7.4

In plain English

A high-severity improper certificate validation in GitLab from GitLab. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities).

Severity (CVSS 3.1)7.4High

Exploit odds (30 days)0.4%top 68.3% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

An improper certificate validation issue in Smartcard authentication in GitLab EE affecting all versions from 11.6 prior to 16.4.4, 16.5 prior to 16.5.4, and 16.6 prior to 16.6.2 allows an attacker to authenticate as another user given their public key if they use Smartcard authentication. Smartcard authentication is an experimental feature and has to be manually enabled by an administrator.

Affected products (as reported)

Vendor	Product	Versions
GitLab	GitLab	11.6 – before 16.4.416.5 – before 16.5.416.6 – before 16.6.2

Weakness: CWE-295 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References

GitLab Issue #421607 issue-tracking