1. Ubuntu Security Notices
  2. USN-4212-1

USN-4212-1: HAProxy vulnerability

Publication date

4 December 2019

Overview

HAProxy could be made to execute arbitrary code if it received a specially crafted HTTP/2 header.

Releases

Packages

  • haproxy - fast and reliable load balancing reverse proxy

Details

Tim Düsterhus discovered that HAProxy incorrectly handled certain HTTP/2 headers.
An attacker could possibly use this issue to execute arbitrary code through CRLF injection.

Tim Düsterhus discovered that HAProxy incorrectly handled certain HTTP/2 headers.
An attacker could possibly use this issue to execute arbitrary code through CRLF injection.

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
19.10 eoan haproxy –  2.0.5-1ubuntu0.3
19.04 disco haproxy –  1.8.19-1ubuntu1.3
18.04 bionic haproxy –  1.8.8-1ubuntu0.9

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References

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