USN-881-1: Kerberos vulnerability

12 January 2010

Kerberos vulnerability



  • krb5 -


It was discovered that Kerberos did not correctly handle invalid AES
blocks. An unauthenticated remote attacker could send specially crafted
traffic that would crash the KDC service, leading to a denial of service,
or possibly execute arbitrary code with root privileges.

Update instructions

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

Ubuntu 9.10
Ubuntu 9.04
Ubuntu 8.10
Ubuntu 8.04
Ubuntu 6.06

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