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USN-6376-1: c-ares vulnerability

18 September 2023

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

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Releases

Packages

  • c-ares - library for asynchronous name resolution

Details

It was discovered that c-ares incorrectly parsed certain SOA replies. A
remote attacker could possibly use this issue to cause c-res to crash,
resulting in a denial of service.

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 20.04

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

References

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Further reading