1. Ubuntu Security Notices
  2. USN-3968-2

USN-3968-2: Sudo vulnerability

Publication date

29 May 2019

Overview

Sudo could be made to overwrite files if it received a specially crafted input.

Releases

Packages

  • 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)

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

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
14.04 trusty sudo-ldap –  1.8.9p5-1ubuntu1.5+esm1
sudo –  1.8.9p5-1ubuntu1.5+esm1

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References

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