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CVE Database

CVE-2013-4238

Impact: Moderate
Public: 2013-08-12
Bugzilla: 996381: CVE-2013-4238 python: hostname check bypassing vulnerability in SSL module

Details

The MITRE CVE dictionary describes this issue as:

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.

Find out more about CVE-2013-4238 from the MITRE CVE dictionary and NIST NVD.

Statement

This issue does not affect the version of python as shipped with Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this issue as having moderate security impact, a future update may address this flaw.

CVSS v2 metrics

Base Score: 4.3
Base Metrics: AV:N/AC:M/Au:N/C:N/I:P/A:N
Access Vector: Network
Access Complexity: Medium
Authentication: None
Confidentiality Impact: None
Integrity Impact: Partial
Availability Impact: None

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat security errata

Platform Errata Release Date
RHEV Hypervisor for RHEL-6 (rhev-hypervisor6) RHSA-2013:1527 November 21, 2013
Red Hat Enterprise Linux version 6 (python) RHSA-2013:1582 November 20, 2013

External References

This page is generated automatically and has not been checked for errors or omissions.

For clarification or corrections please contact the Red Hat Security Response Team.