An issue has been discovered in GitLab CE/EE affecting all versions starting from 6.6 before 15.5.7, all versions starting from 15.6 before 15.6.4, all versions starting from 15.7 before 15.7.2. An attacker may cause Denial of Service on a GitLab instance by exploiting a regex issue in the submodule URL parser.
Weakness
The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Gitlab | Gitlab | 6.6.0 (including) | 15.5.7 (excluding) |
| Gitlab | Gitlab | 15.6.0 (including) | 15.6.4 (excluding) |
| Gitlab | Gitlab | 15.7.0 (including) | 15.7.2 (excluding) |
| Gitlab | Ubuntu | esm-apps/xenial | * |
| Gitlab | Ubuntu | trusty | * |
| Gitlab | Ubuntu | xenial | * |
Extended Description
Attackers can create crafted inputs that
intentionally cause the regular expression to use
excessive backtracking in a way that causes the CPU
consumption to spike.
Potential Mitigations
Related Attack Patterns
References
- https://gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE-2022-3514.json
- https://gitlab.com/gitlab-org/gitlab/-/issues/377978
- https://hackerone.com/reports/1727201
- https://gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE-2022-3514.json
- https://gitlab.com/gitlab-org/gitlab/-/issues/377978
- https://hackerone.com/reports/1727201
- https://gitlab.com/gitlab-org/gitlab/-/issues/377978