Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

USN-992-1: Avahi vulnerabilities

29 September 2010

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Releases

Packages

Details

It was discovered that Avahi incorrectly handled certain mDNS query packets
when the reflector feature is enabled, which is not the default
configuration on Ubuntu. A remote attacker could send crafted mDNS queries
and perform a denial of service on the server and on the network. This
issue only affected Ubuntu 8.04 LTS and 9.04. (CVE-2009-0758)

It was discovered that Avahi incorrectly handled mDNS packets with
corrupted checksums. A remote attacker could send crafted mDNS packets and
cause Avahi to crash, resulting in a denial of service. (CVE-2010-2244)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 9.10
Ubuntu 9.04
Ubuntu 8.04
Ubuntu 10.04

After a standard system update you need to reboot your computer to make
all the necessary changes.