Ubuntu Security Notice USN-2813-1
17th November, 2015
lxcfs vulnerabilities
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 15.10
- Ubuntu 15.04
Summary
Several security issues were fixed in LXCFS.
Software description
- lxcfs
– FUSE based filesystem for LXC
Details
It was discovered that LXCFS incorrectly enforced directory escapes. A
local attacker could use this issue to possibly escalate privileges.
(CVE-2015-1342)
It was discovered that LXCFS incorrectly checked certain permissions. A
local attacker could use this issue t possibly escalate privileges.
(CVE-2015-1344)
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 15.10:
-
lxcfs
0.10-0ubuntu2.1
- Ubuntu 15.04:
-
lxcfs
0.7-0ubuntu4.1
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to make
all the necessary changes.