USN-1465-3: Ubuntu One Client regression

6 June 2012

ubuntuone-client regression

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

  • Ubuntu 10.04 LTS


Fraudulent security certificates could allow sensitive information to be exposed when accessing the Internet.

Software Description

  • ubuntuone-client - Ubuntu One client


USN-1465-1 fixed vulnerabilities in Ubuntu One Client. The update failed to install on certain Ubuntu 10.04 LTS systems that had a legacy Python 2.5 package installed. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that the Ubuntu One Client incorrectly validated server certificates when using HTTPS connections. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could be exploited to alter or compromise confidential information.

Update instructions

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

Ubuntu 10.04 LTS
python-ubuntuone-client - 1.2.2-0ubuntu2.3

To update your system, please follow these instructions:

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