A vulnerability was discovered in GitLab versions before 13.1.10, 13.2.8 and 13.3.4. GitLab was not revoking current user sessions when 2 factor authentication was activated allowing a malicious user to maintain their access.
Weakness
According to WASC, “Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization.”
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Gitlab | Gitlab | 13.1.0 (including) | 13.1.10 (excluding) |
| Gitlab | Gitlab | 13.2.0 (including) | 13.2.8 (excluding) |
| Gitlab | Gitlab | 13.3.0 (including) | 13.3.4 (excluding) |
| Gitlab | Ubuntu | esm-apps/xenial | * |
| Gitlab | Ubuntu | upstream | * |
| Gitlab | Ubuntu | xenial | * |
Potential Mitigations
References
- https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13307.json
- https://gitlab.com/gitlab-org/gitlab/-/issues/31307
- https://hackerone.com/reports/676772
- https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13307.json
- https://gitlab.com/gitlab-org/gitlab/-/issues/31307
- https://hackerone.com/reports/676772