Description
MrDoc through 1.1.1 contains a broken access control vulnerability in the manage_doc_share type 3 branch that allows authenticated users to modify other users' document share settings because updates lack an ownership check. Attackers can compute predictable share tokens from the MD5 of document ID and username to re-enable disabled shares or remove access codes, exposing private documents.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| zmister2016 | MrDoc | ≤ 1.1.1 | — |
References
- GitHub Issue #208 issue-tracking
- https://github.com/zmister2016/MrDoc product
- https://github.com/zmister2016/MrDoc/commit/2cd13ff0659dbef9aea59d5af122a21204942262 patch
- https://github.com/zmister2016/MrDoc/blob/v1.1.1/app_doc/views.py#L1835-L1849 technical-description
- VulnCheck Advisory: MrDoc through 1.1.1 Broken Access Control via manage_doc_share third-party-advisory