Description
The blowfishECB function in core/cipher.cpp in Quassel IRC 0.10.0 allows remote attackers to cause a denial of service (out-of-bounds read) via a malformed string.
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 | konversation | 1.5-2 | — |
| Debian 14 | quassel | 0.10.0-2.1 | — |
| Debian 13 | konversation | 1.5-2 | — |
| Debian 13 | quassel | 0.10.0-2.1 | — |
| Debian 12 | konversation | 1.5-2 | — |
| Debian 12 | quassel | 0.10.0-2.1 | — |
| Debian 7 | konversation | 1.4-1+deb7u1 | DSA-3068-1 |
| Debian 7 | quassel | 0.8.0-1+deb7u3 | DSA-3063-1 |
| Debian 6.0 | konversation | 1.3.1-2+deb6u1 | DLA-168-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | konversation | 1.5-1ubuntu1.14.04.1 | — |
| Ubuntu 14.04 LTS | quassel | 0.10.0-0ubuntu2.1 | — |
Advisories 3
- DSA-3068-1 konversation - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-168-1 konversation - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3063-1 quassel - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- 61932 third-party-advisory
- openSUSE-SU-2014:1406 vendor-advisory
- USN-2401-1 vendor-advisory
- 62261 third-party-advisory
- DSA-3063 vendor-advisory
- http://bugs.quassel-irc.org/issues/1314
- openSUSE-SU-2015:0573 vendor-advisory
- DSA-3068 vendor-advisory
- 62035 third-party-advisory
- openSUSE-SU-2014:1382 vendor-advisory
- https://github.com/quassel/quassel/commit/8b5ecd226f9208af3074b33d3b7cf5e14f55b138