USN-2171-1: rsync vulnerability

23 April 2014

rsync vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 14.04 LTS


rsync could be made to consume resources if it received specially crafted network traffic.

Software Description

  • rsync - fast, versatile, remote (and local) file-copying tool


Ryan Finnie discovered that the rsync daemon incorrectly handled invalid usernames. A remote attacker could use this issue to cause rsync to consume resources, resulting in a denial of service.

Update instructions

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

Ubuntu 14.04 LTS
rsync - 3.1.0-2ubuntu0.1

To update your system, please follow these instructions:

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