USN-1465-3: Ubuntu One Client regression

Ubuntu Security Notice USN-1465-3

6th June, 2012

ubuntuone-client regression

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

  • 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

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 version:

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

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