USN-1465-1: Ubuntu One Client vulnerability

Ubuntu Security Notice USN-1465-1

6th June, 2012

ubuntuone-client vulnerability

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

Summary

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

Software description

  • ubuntuone-client - Ubuntu One client

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 version:

Ubuntu 12.04 LTS:
python-ubuntuone-client 3.0.0-0ubuntu1.1
Ubuntu 11.10:
python-ubuntuone-client 2.0.1-0ubuntu1.1
Ubuntu 11.04:
python-ubuntuone-client 1.6.2-0ubuntu2.1
Ubuntu 10.04 LTS:
python-ubuntuone-client 1.2.2-0ubuntu2.2

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2011-4409