| Name | CVE-2021-21439 |
| Description | DoS attack can be performed when an email contains specially designed URL in the body. It can lead to the high CPU usage and cause low quality of service, or in extreme case bring the system to a halt. This issue affects: OTRS AG ((OTRS)) Community Edition 6.0.x version 6.0.1 and later versions. OTRS AG OTRS 7.0.x version 7.0.26 and prior versions; 8.0.x version 8.0.13 and prior versions. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3551-1 |
| Debian Bugs | 989992 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| otrs2 (PTS) | buster/non-free | 6.0.16-2 | vulnerable |
| buster/non-free (security) | 6.0.16-2+deb10u1 | fixed |
| bullseye/non-free | 6.0.32-6 | fixed |
| znuny (PTS) | bookworm/non-free | 6.5.1-1 | fixed |
| sid/non-free, trixie/non-free | 6.5.8-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| otrs2 | source | buster | 6.0.16-2+deb10u1 | | DLA-3551-1 | |
| otrs2 | source | (unstable) | 6.0.32-5 | | | 989992 |
| znuny | source | (unstable) | (not affected) | | | |
Notes
[stretch] - otrs2 <no-dsa> (Non-free not supported)
- znuny <not-affected> (Fixed before initial upload to Debian)
https://otrs.com/release-notes/otrs-security-advisory-2021-09/
Fixed by: https://github.com/znuny/Znuny/commit/b67e43f73dbb3c029504a082c7807677ed091d23 (rel-6_0_33)