USN-1088-1: Kerberos vulnerability

Releases

• Ubuntu 10.10
• Ubuntu 10.04
• Ubuntu 9.10

Packages

• krb5 - MIT Kerberos primary server (kadmind)

Details

Cameron Meadors discovered that the MIT Kerberos 5 Key Distribution
Center (KDC) daemon is vulnerable to a double-free condition if
the Public Key Cryptography for Initial Authentication (PKINIT)
capability is enabled. This could allow a remote attacker to cause
a denial of service.

Update instructions

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

Ubuntu 9.10

• krb5-kdc - 1.7dfsg~beta3-1ubuntu0.12

Ubuntu 10.10

• krb5-kdc - 1.8.1+dfsg-5ubuntu0.6

Ubuntu 10.04

• krb5-kdc - 1.8.1+dfsg-2ubuntu0.8

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

References

• CVE-2011-0284