1. Ubuntu Security Notices
  2. USN-5063-1

USN-5063-1: HAProxy vulnerabilities

Publication date

8 September 2021

Overview

HAProxy could be made to expose sensitive information over the network.

Releases

Packages

  • haproxy - fast and reliable load balancing reverse proxy

Details

Ori Hollander discovered that HAProxy incorrectly handled HTTP header name
length encoding. A remote attacker could possibly use this issue to inject
a duplicate content-length header and perform request smuggling attacks.

Ori Hollander discovered that HAProxy incorrectly handled HTTP header name
length encoding. A remote attacker could possibly use this issue to inject
a duplicate content-length header and perform request smuggling attacks.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
21.04 hirsute haproxy –  2.2.9-1ubuntu0.2
20.04 focal haproxy –  2.0.13-2ubuntu0.3

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References

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