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==========================================================================
Ubuntu Security Notice USN-2876-1
January 20, 2016

ecryptfs-utils vulnerability
==========================================================================

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

- Ubuntu 15.10
- Ubuntu 15.04
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

mount.ecryptfs_private could be used to run programs as an administrator.

Software Description:
- ecryptfs-utils: eCryptfs cryptographic filesystem utilities

Details:

Jann Horn discovered that mount.ecryptfs_private would mount over certain
directories in the proc filesystem. A local attacker could use this to escalate
their privileges. (CVE-2016-1572)

Update instructions:

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

Ubuntu 15.10:
  ecryptfs-utils                  108-0ubuntu1.1

Ubuntu 15.04:
  ecryptfs-utils                  107-0ubuntu1.3

Ubuntu 14.04 LTS:
  ecryptfs-utils                  104-0ubuntu1.14.04.4

Ubuntu 12.04 LTS:
  ecryptfs-utils                  96-0ubuntu3.5

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

References:
  http://www.ubuntu.com/usn/usn-2876-1
  CVE-2016-1572

Package Information:
  https://launchpad.net/ubuntu/+source/ecryptfs-utils/108-0ubuntu1.1
  https://launchpad.net/ubuntu/+source/ecryptfs-utils/107-0ubuntu1.3
  https://launchpad.net/ubuntu/+source/ecryptfs-utils/104-0ubuntu1.14.04.4
  https://launchpad.net/ubuntu/+source/ecryptfs-utils/96-0ubuntu3.5


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