Description
VPL (Virtual Programming Lab) for Moodle before 5.0.0 contains a reflected cross-site scripting vulnerability that allows remote attackers to inject script via unencoded filename1/filename2 parameters in similarity/diff.php. Attackers can craft a diff.php link with a JavaScript payload that runs when a user holding mod/vpl:similarity opens it, performing actions or disclosing data under their session.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| jcrodriguez-dis | moodle-mod_vpl | < 5.0.0 | 5.0.0 |
References
- https://github.com/jcrodriguez-dis/moodle-mod_vpl/commit/5dd7fe00df2816b692f8ea262c6fa8cdee0b26b7 patch
- VPL V5.0.0 Release Notes release-notes
- https://github.com/jcrodriguez-dis/moodle-mod_vpl/blob/V4.5.0/similarity/diff.class.php#L412-L419 technical-description
- VulnCheck Advisory: VPL for Moodle before 5.0.0 Reflected XSS via similarity/diff.php filename third-party-advisory