USN-2524-1: eCryptfs vulnerability

11 March 2015

Sensitive information in encrypted home and Private directories could be exposed if an attacker gained access to your files.



  • ecryptfs-utils - eCryptfs cryptographic filesystem utilities


Sylvain Pelissier discovered that eCryptfs did not generate a random salt when
encrypting the mount passphrase with the login password. An attacker could use
this issue to discover the login password used to protect the mount passphrase
and gain unintended access to the encrypted files.

Update instructions

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

Ubuntu 14.10
Ubuntu 14.04
Ubuntu 12.04
Ubuntu 10.04

After a standard system update you need to log out of all sessions and then log
back in to make all the necessary changes.