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USN-6990-1: znc vulnerability

4 September 2024

znc could be made to execute arbitrary code on a user's system if they were persuaded to join a malicious server.

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Releases

Packages

  • znc - advanced modular IRC bouncer

Details

Johannes Kuhn (DasBrain) discovered that znc incorrectly handled
user input under certain operations. An attacker could possibly
use this issue to execute arbitrary code on a user's system if
the user was tricked into joining a malicious server.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 24.04
Ubuntu 22.04
Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04
Ubuntu 14.04

In general, a standard system update will make all the necessary changes.

References

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Further reading