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USN-999-1: Kerberos vulnerability

5 October 2010

Remote authenticated users could crash the KDC.



  • krb5 - MIT Kerberos


Mike Roszkowski discovered that the Kerberos KDC did not correctly
validate the contents of certain messages. If an authenticated remote
attacker sent specially crafted TGS requests, the KDC service would crash,
leading to a denial of service.

Update instructions

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

Ubuntu 10.10
Ubuntu 10.04

In general, a standard system update will make all the necessary changes.