For GitLab Runner before 13.0.12, 13.1.6, 13.2.3, by replacing dockerd with a malicious server, the Shared Runner is susceptible to SSRF.
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Runner | Gitlab | 1.0 (including) | 13.0.12 (excluding) |
| Runner | Gitlab | 13.1 (including) | 13.1.6 (excluding) |
| Runner | Gitlab | 13.2 (including) | 13.2.3 (excluding) |
| Gitlab-ci-multi-runner | Ubuntu | bionic | * |
| Gitlab-ci-multi-runner | Ubuntu | trusty | * |