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[USN-1465-3] Ubuntu One Client regression

Posted on 06 June 2012
Ubuntu Security

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Ubuntu Security Notice USN-1465-3
June 06, 2012

ubuntuone-client regression
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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 versions:

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

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

References:
http://www.ubuntu.com/usn/usn-1465-3
http://www.ubuntu.com/usn/usn-1465-1
CVE-2011-4409

Package Information:
https://launchpad.net/ubuntu/+source/ubuntuone-client/1.2.2-0ubuntu2.3

 

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