USN-1465-2: Ubuntu One storage protocol update

6 June 2012

ubuntuone-storage-protocol update

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

  • Ubuntu 12.04 LTS
  • Ubuntu 11.10
  • Ubuntu 11.04
  • Ubuntu 10.04 LTS


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

Software Description

  • ubuntuone-storage-protocol - Python library for Ubuntu One file storage and sharing service


USN-1465-1 fixed a vulnerability in the Ubuntu One Client. This update adds a required fix to the Ubuntu One storage protocol library.

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 12.04 LTS
python-ubuntuone-storageprotocol - 3.0.0-0ubuntu1.1
Ubuntu 11.10
python-ubuntuone-storageprotocol - 2.0.1-0ubuntu1.1
Ubuntu 11.04
python-ubuntuone-storageprotocol - 1.6.1-0ubuntu1.2
Ubuntu 10.04 LTS
python-ubuntuone-storageprotocol - 1.2.0-0ubuntu1.1

To update your system, please follow these instructions:

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