USN-1948-1: httplib2 vulnerability

9 September 2013

python-httplib2 vulnerability

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

  • Ubuntu 13.04
  • Ubuntu 12.10
  • Ubuntu 12.04 LTS
  • Ubuntu 10.04 LTS


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

Software Description

  • python-httplib2 - comprehensive HTTP client library written for Python


It was discovered that httplib2 only validated SSL certificates on the first request to a connection, and didn’t report validation failures on subsequent requests. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could possibly be exploited in certain scenarios to alter or compromise confidential information in applications that used the httplib2 library.

Update instructions

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

Ubuntu 13.04
python-httplib2 - 0.7.7-1ubuntu0.1
Ubuntu 12.10
python-httplib2 - 0.7.4-2ubuntu0.1
Ubuntu 12.04 LTS
python-httplib2 - 0.7.2-1ubuntu2.1
Ubuntu 10.04 LTS
python-httplib2 - 0.7.2-1ubuntu2~

To update your system, please follow these instructions:

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