USN-999-1: Kerberos vulnerability

5 October 2010

Remote authenticated users could crash the KDC.

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Releases

Packages

  • krb5 - MIT Kerberos

Details

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.

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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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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.

References

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Further reading