Description
In Open Ticket Request System (OTRS) 4.0.x before 4.0.32, 5.0.x before 5.0.30, and 6.0.x before 6.0.11, an attacker could send a malicious email to an OTRS system. If a user with admin permissions opens it, it causes deletions of arbitrary files that the OTRS web server user has write access to.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 11 | otrs2 | 6.0.11-1 | — |
| Debian 9 | otrs2 | 5.0.16-1+deb9u6 | DSA-4317-1 |
| Debian 8 | otrs2 | 3.3.18-1+deb8u6 | DLA-1521-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | otrs2 | No fix yet | — |
| Ubuntu 16.04 LTS | otrs2 | No fix yet | — |
Advisories 2
- DSA-4317-1 otrs2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1521-1 otrs2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://github.com/OTRS/otrs/commit/d9db0c6a15caafda7689320ecf61777993c33711
- DSA-4317 vendor-advisory
- [debian-lts-announce] 20180926 [SECURITY] [DLA 1521-1] otrs2 security update mailing-list
- https://community.otrs.com/security-advisory-2018-04-security-update-for-otrs-framework/
- https://github.com/OTRS/otrs/commit/a4a1a01f84fac7ab032570ee50b660e2ebb15c01
- https://github.com/OTRS/otrs/commit/d8cae00b0f78c2a07bb10cedb817304139395843