1. Ubuntu Security Notices
  2. USN-1084-1

USN-1084-1: avahi vulnerability

Publication date

7 March 2011

Overview

An attacker could send crafted input to Avahi and cause it to hang.

Releases

Packages

  • avahi - Avahi IPv4LL network address configuration daemon

Details

It was discovered that Avahi incorrectly handled empty UDP packets. A
remote attacker could send a specially-crafted packet and cause Avahi to
hang, resulting in a denial of service.

It was discovered that Avahi incorrectly handled empty UDP packets. A
remote attacker could send a specially-crafted packet and cause Avahi to
hang, resulting in a denial of service.

Update instructions

After a standard system update you need to reboot your computer to 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
9.10 karmic libavahi-core6 –  0.6.25-1ubuntu5.3
8.04 hardy libavahi-core5 –  0.6.22-2ubuntu4.3
10.10 maverick libavahi-core7 –  0.6.27-2ubuntu3.1
10.04 lucid libavahi-core6 –  0.6.25-1ubuntu6.2

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References

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