All versions of GitLab CE/EE starting from 12.8 before 13.10.5, all versions starting from 13.11 before 13.11.5, and all versions starting from 13.12 before 13.12.2 were affected by an issue in the handling of x509 certificates that could be used to spoof author of signed commits.
Weakness
The product does not validate, or incorrectly validates, a certificate.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Gitlab | Gitlab | 12.8.0 (including) | 13.10.5 (excluding) |
| Gitlab | Gitlab | 13.11.0 (including) | 13.11.5 (excluding) |
| Gitlab | Gitlab | 13.12.0 (including) | 13.12.2 (excluding) |
| Gitlab | Ubuntu | upstream | * |
Potential Mitigations
Related Attack Patterns
References
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22218.json
- https://gitlab.com/gitlab-org/gitlab/-/issues/297665
- https://hackerone.com/reports/1077019
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22218.json
- https://gitlab.com/gitlab-org/gitlab/-/issues/297665
- https://hackerone.com/reports/1077019