=========================================================================Ubuntu Security Notice USN-3968-2
May 29, 2019
sudo vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 ESM
Summary:
Sudo could be made to overwrite files if it received a specially
crafted input.
Software Description:
- sudo: Provide limited super user privileges to specific users
Details:
USN-3968-1 fixed a vulnerability in Sudo. This update provides
the corresponding update for Ubuntu 14.04 ESM.
Original advisory details:
It was discovered that Sudo did not properly parse the contents of
/proc/[pid]/stat when attempting to determine its controlling tty. A
local attacker in some configurations could possibly use this to
overwrite any file on the filesystem, bypassing intended permissions.
(CVE-2017-1000368)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 14.04 ESM:
sudo 1.8.9p5-1ubuntu1.5+esm1
sudo-ldap 1.8.9p5-1ubuntu1.5+esm1
In general, a standard system update will make all the necessary
changes.
References:
https://ubuntu.com/security/notices/USN-3968-2
https://ubuntu.com/security/notices/USN-3968-1
CVE-2017-1000368
