USN-1434-1: Samba vulnerability

1 May 2012

Samba could allow a user to gain administrative privileges to the Samba server.

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Releases

Packages

  • samba - SMB/CIFS file, print, and login server for Unix

Details

Ivano Cristofolini discovered that Samba incorrectly handled some Local
Security Authority (LSA) remote procedure calls (RPC). A remote, authenticated
attacker could exploit this to grant administrative privileges to arbitrary
users. The administrative privileges could be used to bypass permission checks
performed by the Samba server.

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Update instructions

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

Ubuntu 12.04
Ubuntu 11.10
Ubuntu 11.04
Ubuntu 10.04

After a standard system update you may need to review the privileges of Samba
user accounts.

References

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Further reading