GHSA-77x8-3v3h-hrhvCritical
MantisBT: Reflected XSS in admin/install.php
🔗 CVE IDs covered (1)
📋 Description
MantisBT 2.28.3 and earlier contains six reflected XSS injection points in /admin/install.php. User-supplied parameters are echoed into HTML without escaping via print_test_result(). No authentication is required.
A Content Security Policy (script-src 'self') prevents inline JavaScript execution, but the CSP is missing a form-action directive, allowing exploitation via credential-phishing form injection and open redirects.
Impact
- Credential phishing: Attacker crafts a URL that renders a fake login form on the real MantisBT admin page. Admin credentials are submitted to an attacker-controlled server.
- Open redirect: Victim is silently redirected to a phishing or malware site.
- UI manipulation: CSS injection can hide legitimate page content and overlay attacker-controlled HTML, enabling social engineering.
Patches
- https://github.com/mantisbt/mantisbt/commit/0f32ceabadc745239754962df91a51d5d51e3fd7
- https://github.com/mantisbt/mantisbt/commit/f2191a0d8ce438bf74171d496cf721dae025a5c0
Workarounds
Remove the /admin directory, as recommended in the Admin Guide
Resources
- https://mantisbt.org/bugs/view.php?id=37103
- related advisory GHSA-vcrw-4xvv-jh49
Credits
McCaulay Hudson (@_McCaulay) of watchTowr
🎯 Affected products1
- composer/mantisbt/mantisbt:<= 2.28.3
🔗 References (5)
- https://github.com/mantisbt/mantisbt/security/advisories/GHSA-77x8-3v3h-hrhv
- https://github.com/mantisbt/mantisbt/commit/0f32ceabadc745239754962df91a51d5d51e3fd7
- https://github.com/mantisbt/mantisbt/commit/f2191a0d8ce438bf74171d496cf721dae025a5c0
- https://mantisbt.org/bugs/view.php?id=37103
- https://github.com/advisories/GHSA-77x8-3v3h-hrhv