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Category:   Application (Generic)  >   eCryptfs Vendors:   ecryptfs.sourceforge.net
eCryptfs procfs Mount Bug Lets Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1034791
SecurityTracker URL:  http://securitytracker.com/id/1034791
CVE Reference:   CVE-2016-1572   (Links to External Site)
Date:  Jan 22 2016
Impact:   User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in eCryptfs. A local user can obtain elevated privileges on the target system.

A local user can cause the setuid-root mount.ecryptfs_private helper to mount over an arbitrary target directory that the user owns, including procfs, and exploit interactions with higher privileged processes to gain elevated privileges.

Jann Horn reported this vulnerability.

Impact:   A local user can obtain elevated privileges on the target system.
Solution:   The vendor has issued a source code fix, available at:

https://bazaar.launchpad.net/~ecryptfs/ecryptfs/trunk/revision/870

Cause:   Access control error
Underlying OS:  Linux (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Jan 22 2016 (Ubuntu Issues Fix) eCryptfs procfs Mount Bug Lets Local Users Gain Elevated Privileges
Ubuntu has issued a fix for Ubuntu Linux 12.04 LTS, 14.04 LTS, 15.04, and 15.10.



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