USN-1084-1: avahi vulnerability

Releases

• Ubuntu 10.10
• Ubuntu 10.04
• Ubuntu 9.10
• Ubuntu 8.04

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.

Update instructions

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

Ubuntu 9.10

• libavahi-core6 - 0.6.25-1ubuntu5.3

Ubuntu 8.04

• libavahi-core5 - 0.6.22-2ubuntu4.3

Ubuntu 10.10

• libavahi-core7 - 0.6.27-2ubuntu3.1

Ubuntu 10.04

• libavahi-core6 - 0.6.25-1ubuntu6.2

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

References

• CVE-2011-1002