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USN-696-1: Avahi vulnerabilities

18 December 2008

Avahi vulnerabilities

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Releases

Packages

Details

Emanuele Aina discovered that Avahi did not properly validate its input when
processing data over D-Bus. A local attacker could send an empty TXT message
via D-Bus and cause a denial of service (failed assertion). This issue only
affected Ubuntu 6.06 LTS. (CVE-2007-3372)

Hugo Dias discovered that Avahi did not properly verify its input when
processing mDNS packets. A remote attacker could send a crafted mDNS packet
and cause a denial of service (assertion failure). (CVE-2008-5081)

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 8.10
Ubuntu 8.04
Ubuntu 7.10
Ubuntu 6.06

In general, a standard system upgrade is sufficient to effect the
necessary changes.