Description
tcsd in TrouSerS before 0.3.10 allows remote attackers to cause a denial of service (daemon crash) via a crafted type_offset value in a TCP packet to port 30003.
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 14 | trousers | 0.3.9-1 | — |
| Debian 13 | trousers | 0.3.9-1 | — |
| Debian 12 | trousers | 0.3.9-1 | — |
| Debian 6.0 | trousers | 0.3.5-2+squeeze1 | DSA-2576-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | trousers +2 | 0.3.13-2.el6 | RHSA-2014:1507 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Exploit-DB 1
- TrouSerS - Denial of Service EDB-22904 · dos · Nov 23, 2012
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 2
- RHSA-2014:1507 Red Hat Security Advisory: trousers security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-2576-1 trousers - denial of service Debian Security (DSA / DLA) · Mar 9, 2026
References
- http://sourceforge.net/tracker/index.php?func=detail&aid=3473554&group_id=126012&atid=704358
- DSA-2576 vendor-advisory
- http://trousers.git.sourceforge.net/git/gitweb.cgi?p=trousers/trousers%3Ba=commit%3Bh=50dd06a6f639b76b3bb629606ef71b2dc5407601
- http://trousers.git.sourceforge.net/git/gitweb.cgi?p=trousers/trousers%3Ba=commit%3Bh=ae0c2f8c1fd7a96ba0191f83b6057f8cbc51e786
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=692649
- https://bugzilla.redhat.com/show_bug.cgi?id=781648
- trousers-tcsd-dos(80226) vdb-entry
- 22904 exploit
- http://packetstormsecurity.com/files/118281/TrouSerS-Denial-Of-Service.html
- 51295 third-party-advisory
- https://blogs.oracle.com/sunsecurity/entry/cve_2012_0698_denial_of