Description
An issue has been discovered in GitLab CE/EE affecting all versions starting from 10.3 before 15.11.10, all versions starting from 16.0 before 16.0.6, all versions starting from 16.1 before 16.1.1. A Regular Expression Denial of Service was possible via sending crafted payloads to the preview_markdown endpoint.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| GitLab | GitLab | 10.3 – < 15.11.10, 16.0 – < 16.0.6, 16.1 – < 16.1.1 | 15.11.10 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | gitlab | No fix yet | — |
Advisories 1
- WID-SEC-2023-1604 GitLab: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 29, 2023
References
- GitLab Issue #409802 issue-tracking
- HackerOne Bug Bounty Report #1960970 technical-description exploit