USN-1800-1: HAProxy vulnerabilities

Ubuntu Security Notice USN-1800-1

15th April, 2013

haproxy vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 12.10
  • Ubuntu 12.04 LTS
  • Ubuntu 11.10

Summary

HAProxy could be made to crash or run programs 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 configurations where
global.tune.bufsize was set to a value higher than the default. A remote
attacker could use this issue to cause a denial of service, or possibly
execute arbitrary code. (CVE-2012-2942)

Yves Lafon discovered that HAProxy incorrectly handled HTTP keywords in TCP
inspection rules when HTTP keep-alive is enabled. A remote attacker could
use this issue to cause a denial of service, or possibly execute arbitrary
code. (CVE-2013-1912)

Update instructions

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

Ubuntu 12.10:
haproxy 1.4.18-0ubuntu2.1
Ubuntu 12.04 LTS:
haproxy 1.4.18-0ubuntu1.1
Ubuntu 11.10:
haproxy 1.4.15-1ubuntu0.1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2012-2942, CVE-2013-1912