USN-2171-1: rsync vulnerability

Ubuntu Security Notice USN-2171-1

23rd 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 version:

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.