Ubuntu Security Notice 1982-1 - Ryan Sleevi discovered that Python did not properly handle certificates with NULL characters in the Subject Alternative Name field. An attacker could exploit this to perform a man in the middle attack to view sensitive information or alter encrypted communications.
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Ubuntu Security Notice USN-1982-1
October 01, 2013
python2.6 vulnerability
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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:
- python2.6: An interactive high-level object-oriented language
Details:
Ryan Sleevi discovered that Python did not properly handle certificates
with NULL characters in the Subject Alternative Name field. An attacker
could exploit this to perform a man in the middle attack to view sensitive
information or alter encrypted communications.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 10.04 LTS:
python2.6 2.6.5-1ubuntu6.2
python2.6-minimal 2.6.5-1ubuntu6.2
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-1982-1
CVE-2013-4238
Package Information:
https://launchpad.net/ubuntu/+source/python2.6/2.6.5-1ubuntu6.2