CVE-2013-4238
python2.7 - security update
EPSS 1.4%
Description
The ssl.match_hostname function in the SSL module in Python 2.6 through 3.4 does not properly handle a '\0' character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.
How to fix CVE-2013-4238
To remediate CVE-2013-4238, upgrade the affected package to a fixed version below.
- Debian/python2.7—upgrade to 2.7.5-8 or later
- Debian/python2.7—upgrade to 2.7.3-6+deb7u2 or later
Is CVE-2013-4238 being exploited?
Low — EPSS is 1.4%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2.7.5-8
- from 0, < 2.7.3-6+deb7u2