Description
The onReadyRead function in core/coreauthhandler.cpp in Quassel before 0.12.4 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via invalid handshake data.
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 | quassel | 1:0.12.4-2 | — |
| Debian 13 | quassel | 1:0.12.4-2 | — |
| Debian 12 | quassel | 1:0.12.4-2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | quassel | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | quassel | 0.12.4-3.3 | openSUSE-SU-2024:10119-1 |
Advisories 1
- openSUSE-SU-2024:10119-1 quassel-base-0.12.4-3.3 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- [oss-security] 20160430 Re: CVE request - Quassel IRC denial of service mailing-list
- https://github.com/quassel/quassel/commit/e678873
- openSUSE-SU-2016:1314 vendor-advisory
- http://quassel-irc.org/node/129
- FEDORA-2016-bf916bcc04 vendor-advisory
- [oss-security] 20160430 CVE request - Quassel IRC denial of service mailing-list
- FEDORA-2016-42f30d76a0 vendor-advisory
- FEDORA-2016-0431acaa78 vendor-advisory