Ubuntu Security Notice 1966-1 - Jeremy Allison discovered that Samba incorrectly handled certain extended attribute lists. A remote attacker could use this issue to cause Samba to hang, resulting in a denial of service.
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Ubuntu Security Notice USN-1966-1
September 24, 2013
samba vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 13.04
- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS
Summary:
Samba could be made to hang if it received specially crafted network
traffic.
Software Description:
- samba: SMB/CIFS file, print, and login server for Unix
Details:
Jeremy Allison discovered that Samba incorrectly handled certain extended
attribute lists. A remote attacker could use this issue to cause Samba
to hang, resulting in a denial of service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 13.04:
samba 2:3.6.9-1ubuntu1.1
Ubuntu 12.10:
samba 2:3.6.6-3ubuntu5.2
Ubuntu 12.04 LTS:
samba 2:3.6.3-2ubuntu2.8
Ubuntu 10.04 LTS:
samba 2:3.4.7~dfsg-1ubuntu3.12
In general, a standard system update will make all the necessary changes.
References:
https://www.ubuntu.com/usn/usn-1966-1
CVE-2013-4124
Package Information:
https://launchpad.net/ubuntu/+source/samba/2:3.6.9-1ubuntu1.1
https://launchpad.net/ubuntu/+source/samba/2:3.6.6-3ubuntu5.2
https://launchpad.net/ubuntu/+source/samba/2:3.6.3-2ubuntu2.8
https://launchpad.net/ubuntu/+source/samba/2:3.4.7~dfsg-1ubuntu3.12