Ubuntu Security Notice USN-556-1
18th December, 2007
samba vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 7.10
- Ubuntu 7.04
- Ubuntu 6.10
- Ubuntu 6.06 LTS
Software description
- samba
Details
Alin Rad Pop discovered that Samba did not correctly check the size
of reply packets to mailslot requests. If a server was configured
with domain logon enabled, an unauthenticated remote attacker could send
a specially crafted domain logon packet and execute arbitrary code or
crash the Samba service. By default, domain logon is disabled in Ubuntu.
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 7.10:
- libsmbclient 3.0.26a-1ubuntu2.3
- samba 3.0.26a-1ubuntu2.3
- Ubuntu 7.04:
- libsmbclient 3.0.24-2ubuntu1.5
- samba 3.0.24-2ubuntu1.5
- Ubuntu 6.10:
- libsmbclient 3.0.22-1ubuntu4.5
- samba 3.0.22-1ubuntu4.5
- Ubuntu 6.06 LTS:
- libsmbclient 3.0.22-1ubuntu3.6
- samba 3.0.22-1ubuntu3.6
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system upgrade is sufficient to effect the
necessary changes.