Description
W (vincent-peugnet/wcms) through 3.18.0 contains a remote code execution vulnerability that allows authenticated editors to write arbitrary files by abusing the unvalidated path in POST /api/v0/media/upload/[*:path]. Attackers can upload .php files executed by the web server, use encoded ../ sequences to write outside the media directory, and delete arbitrary files via DELETE /api/v0/media/[*:path].
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| vincent-peugnet | wcms | ≤ 3.18.0 | — |
References
- GitHub Issue #662 issue-tracking
- https://github.com/vincent-peugnet/wcms product
- https://github.com/vincent-peugnet/wcms/blob/cda5bcdb95dbdb1e804fdfe0e5fd2e2b2f8a90e2/app/class/Controllerapimedia.php#L24-L44 technical-description
- https://github.com/vincent-peugnet/wcms/blob/cda5bcdb95dbdb1e804fdfe0e5fd2e2b2f8a90e2/app/class/Media.php#L98 technical-description
- VulnCheck Advisory: W (wcms) through 3.18.0 RCE and Arbitrary File Write via Media Upload API third-party-advisory