==========================================================================
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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