Vulnerability in zmister2016 MrDoc

[ Why it matters ]Priority signals

• Public proof-of-concept exploit exists (CISA SSVC)

[ Description ]Official description

MrDoc through 1.1.1 contains a missing object-level authorization vulnerability in the ImportLocalDoc API that allows authenticated users to modify other users' documents and projects. Attackers can send PUT requests with arbitrary sort_data document ids to publish private drafts and reparent documents, or POST with arbitrary top_doc ids to inject documents.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• github.com/zmister2016/MrDoc/blob/v1.1.1/app_doc/views_import.py
• hackmd.io/@hieuPenguinnn/mrdoc-import-local-doc-api-missing-authz-cross-user-publish
• www.vulncheck.com/advisories/mrdoc-through-1.1.1-missing-authorization-via-api-import-l…