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USN-755-1: Kerberos vulnerabilities

7 April 2009

Kerberos vulnerabilities

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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.

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Releases

Packages

Details

Multiple flaws were discovered in the Kerberos GSS-API and ASN.1 routines
that did not correctly handle certain requests. An unauthenticated remote
attacker could send specially crafted traffic to crash services using
the Kerberos library, leading to a denial of service.

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

After a standard system upgrade you need to restart any services using
the Kerberos libraries to effect the necessary changes.