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USN-893-1: Samba vulnerability

28 January 2010

Samba vulnerability




Ronald Volgers discovered that the mount.cifs utility, when installed as a
setuid program, suffered from a race condition when verifying user
permissions. A local attacker could trick samba into mounting over
arbitrary locations, leading to a root privilege escalation.

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.

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