USN-7431-2: HAProxy vulnerability

23 April 2025

HAProxy could be made to crash or run programs if it received specially crafted network traffic.

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Releases

Packages

  • haproxy - fast and reliable load balancing reverse proxy

Details

USN-7431-1 fixed a vulnerability in HAProxy. This update provides the
corresponding update for Ubuntu 25.04.

Original advisory details:

Aleandro Prudenzano and Edoardo Geraci discovered that HAProxy incorrectly
handled certain uncommon configurations that replace multiple short
patterns with a longer one. A remote attacker could use this issue to
cause HAProxy to crash, resulting in a denial of service, or possibly
execute arbitrary code.

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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.

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Update instructions

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

Ubuntu 25.04

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

References

Related notices

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