Ubuntu: 1802-1: Samba vulnerability
Posted by Benjamin D. Thomas   
Ubuntu Samba would allow unintended write access to files over the network.
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Ubuntu Security Notice USN-1802-1
April 16, 2013

samba vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 12.04 LTS

Summary:

Samba would allow unintended write access to files over the network.

Software Description:
- samba: SMB/CIFS file, print, and login server for Unix

Details:

It was discovered that Samba incorrectly handled CIFS share attributes when
SMB2 was used. A remote authenticated user could possibly gain write access
to certain shares, bypassing the intended permissions.

Update instructions:

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

Ubuntu 12.04 LTS:
  samba                           2:3.6.3-2ubuntu2.6

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

References:
  http://www.ubuntu.com/usn/usn-1802-1
  CVE-2013-0454

Package Information:
  https://launchpad.net/ubuntu/+source/samba/2:3.6.3-2ubuntu2.6