In Open Ticket Request System (OTRS) 3.3.x through 3.3.16, 4.x through 4.0.23, and 5.x through 5.0.19, an attacker with agent permission is capable of opening a specific URL in a browser to gain administrative privileges / full access. Afterward, all system settings can be read and changed. The URLs in question contain index.pl?Action=Installer with ;Subaction=Intro or ;Subaction=Start or ;Subaction=System appended at the end.
Weakness
The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Otrs | Otrs | 3.3.0 (including) | 3.3.16 (including) |
| Otrs | Otrs | 4.0.0 (including) | 4.0.23 (including) |
| Otrs | Otrs | 5.0.0 (including) | 5.0.19 (including) |
| Otrs2 | Ubuntu | artful | * |
| Otrs2 | Ubuntu | esm-apps/xenial | * |
| Otrs2 | Ubuntu | trusty | * |
| Otrs2 | Ubuntu | upstream | * |
| Otrs2 | Ubuntu | xenial | * |
| Otrs2 | Ubuntu | yakkety | * |
| Otrs2 | Ubuntu | zesty | * |
Potential Mitigations
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/122.html
- https://cwe.mitre.org/data/definitions/233.html
- https://cwe.mitre.org/data/definitions/58.html
References
- http://www.debian.org/security/2017/dsa-3876
- https://packetstormsecurity.com/files/142862/OTRS-Install-Dialog-Disclosure.html
- https://www.otrs.com/security-advisory-2017-03-security-update-otrs-versions/
- http://www.debian.org/security/2017/dsa-3876
- https://packetstormsecurity.com/files/142862/OTRS-Install-Dialog-Disclosure.html
- https://www.otrs.com/security-advisory-2017-03-security-update-otrs-versions/