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Ubuntu 21.10, 20.04 LTS USN-5312-1: Moderate HAProxy Denial Of Service

ubuntu
Calendar Grey March 3, 2022
Dist Ubuntu Esm H88
Nginx may fail to handle specially designed packets. Ubuntu clients recommended to upgrade for safety.
HAProxy could be made to stop responding if it received specially crafted network traffic.

Summary

HAProxy could be made to stop responding if it received specially crafted

network traffic.

Software Description:

- haproxy: fast and reliable load balancing reverse proxy

Details:

It was discovered that HAProxy incorrectly handled certain headers. A

remote attacker could possibly use this issue to cause HAProxy to stop

responding, resulting in a denial of service.

Topics%20covered

Topics Covered

security advisory denial of service ubuntu network attack haproxy

Update Instructions

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

Ubuntu 21.10:
  haproxy                         2.2.9-2ubuntu2.1

Ubuntu 20.04 LTS:
  haproxy                         2.0.13-2ubuntu0.5

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

References

https://ubuntu.com/security/notices/USN-5312-1

CVE-2022-0711

March 03, 2022

Topics%20covered

Topics Covered

security advisory denial of service ubuntu network attack haproxy

Package Information

https://launchpad.net/ubuntu/+source/haproxy/2.2.9-2ubuntu2.1
https://launchpad.net/ubuntu/+source/haproxy/2.0.13-2ubuntu0.5

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