Description
Arkon through 0.9.2 contains a missing authorization vulnerability in list_skill_versions that allows authenticated employees to read other departments' skill version metadata by bypassing the can_access_skill check. Attackers holding the default skill:read permission can request GET /api/skills/{slug}/versions for another department's skill to obtain version numbers, hashes, storage paths and changelogs.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| nduckmink | arkon | ≤ 0.9.2 | — |
References
- https://hackmd.io/@hieuPenguinnn/arkon-wiki-graph-cross-department-idor third-party-advisory
- https://github.com/nduckmink/arkon/blob/v0.9.2/app/routers/skills.py#L427-L434 technical-description
- https://github.com/nduckmink/arkon/blob/v0.9.2/app/routers/skills.py#L408-L425 technical-description
- VulnCheck Advisory: Arkon through 0.9.2 Missing Authorization via Skills Versions API third-party-advisory