USN-6676-1: c-ares vulnerability

6 March 2024

c-ares could be made to crash if it received specially crafted input.

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Releases

Packages

  • c-ares - library for asynchronous name resolution

Details

Vojtěch Vobr discovered that c-ares incorrectly handled user input from
local configuration files. An attacker could possibly use this issue to
cause a denial of service via application crash.

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 23.10
Ubuntu 22.04
Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04

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

References

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Further reading