Path Traversal in audiobookshelf

Vulnerability Description

audiobookshelf is a self-hosted audiobook and podcast server. A non-admin user is not allowed to create libraries (or access only the ones they have permission to). However, the `LibraryController` is missing the check for admin user and thus allows a path traversal issue. Allowing non-admin users to write to any directory in the system can be seen as a form of path traversal. However, since it can be restricted to only admin permissions, fixing this is relatively simple and falls more into the realm of Role-Based Access Control (RBAC). This issue has been addressed in release version 2.13.0. All users are advised to upgrade. There are no known workarounds for this vulnerability.

References

• https://github.com/advplyr/audiobookshelf/security/advisories/GHSA-gg56-vj58-g5mc
• https://github.com/advplyr/audiobookshelf-ghsa-gg56-vj58-g5mc/pull/1
• https://github.com/advplyr/audiobookshelf/blob/1c0d6e9c670ebb1b6f1e427a4c4d9250a7fb9b80/server/controllers/LibraryController.js#L43-L47