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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact None

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

The EPSS score is 0.02891.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
n/a n/a affected
Version Status Constraints
n/a affected
—

Configuration 1 [-]

cpe:2.3:o:canonical:ubuntu_linux:10.04:-:lts:*:*:*:*:*

Configuration 2 [-]

OR cpe:2.3:a:python:python:2.6.1:*:*:*:*:*:*:*
cpe:2.3:a:python:python:2.6.2:*:*:*:*:*:*:*
cpe:2.3:a:python:python:2.6.3:*:*:*:*:*:*:*
cpe:2.3:a:python:python:2.6.4:*:*:*:*:*:*:*
cpe:2.3:a:python:python:2.6.5:*:*:*:*:*:*:*
cpe:2.3:a:python:python:2.6.6:*:*:*:*:*:*:*
cpe:2.3:a:python:python:2.6.7:*:*:*:*:*:*:*
cpe:2.3:a:python:python:2.6.8:*:*:*:*:*:*:*
cpe:2.3:a:python:python:2.6.2150:*:*:*:*:*:*:*
cpe:2.3:a:python:python:2.6.6150:*:*:*:*:*:*:*
cpe:2.3:a:python:python:2.7.1:*:*:*:*:*:*:*
cpe:2.3:a:python:python:2.7.1:rc1:*:*:*:*:*:*
cpe:2.3:a:python:python:2.7.2:rc1:*:*:*:*:*:*
cpe:2.3:a:python:python:2.7.3:*:*:*:*:*:*:*
cpe:2.3:a:python:python:2.7.1150:*:*:*:*:*:*:*
cpe:2.3:a:python:python:2.7.1150:*:*:*:*:*:x64:*
cpe:2.3:a:python:python:2.7.2150:*:*:*:*:*:*:*
cpe:2.3:a:python:python:3.0:*:*:*:*:*:*:*
cpe:2.3:a:python:python:3.0.1:*:*:*:*:*:*:*
cpe:2.3:a:python:python:3.1:*:*:*:*:*:*:*
cpe:2.3:a:python:python:3.1.1:*:*:*:*:*:*:*
cpe:2.3:a:python:python:3.1.2:*:*:*:*:*:*:*
cpe:2.3:a:python:python:3.1.3:*:*:*:*:*:*:*
cpe:2.3:a:python:python:3.1.4:*:*:*:*:*:*:*
cpe:2.3:a:python:python:3.1.5:*:*:*:*:*:*:*
cpe:2.3:a:python:python:3.1.2150:*:*:*:*:*:x64:*
cpe:2.3:a:python:python:3.2:*:*:*:*:*:*:*
cpe:2.3:a:python:python:3.2:alpha:*:*:*:*:*:*
cpe:2.3:a:python:python:3.2.3:*:*:*:*:*:*:*
cpe:2.3:a:python:python:3.2.2150:*:*:*:*:*:*:*
cpe:2.3:a:python:python:3.3:*:*:*:*:*:*:*
cpe:2.3:a:python:python:3.3:beta2:*:*:*:*:*:*
cpe:2.3:a:python:python:3.4:alpha1:*:*:*:*:*:*

Configuration 3 [-]

OR cpe:2.3:o:opensuse:opensuse:11.4:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:12.2:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:12.3:*:*:*:*:*:*:*
Package CPE Advisory Released Date
Red Hat Enterprise Linux 6
python-0:2.6.6-51.el6 cpe:/o:redhat:enterprise_linux:6 RHSA-2013:1582 2013-11-20T00:00:00Z
RHEV 3.X Hypervisor and Agents for RHEL-6
rhev-hypervisor6-0:6.5-20131115.0.3.2.el6_5 cpe:/o:redhat:enterprise_linux:6::hypervisor RHSA-2013:1527 2013-11-21T00:00:00Z

No data.

Subscriptions

Vendors Products
Canonical Subscribe
Ubuntu Linux Subscribe
Opensuse Subscribe
Opensuse Subscribe
Python Subscribe
Python Subscribe
Redhat Subscribe
Enterprise Linux Subscribe

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Debian DLA Debian DLA DLA-25-1 python2.6 security update
Debian DSA Debian DSA DSA-2880-1 python2.7 security update
EUVD EUVD EUVD-2013-4142 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.
Ubuntu USN Ubuntu USN USN-1982-1 Python 2.6 vulnerability
Ubuntu USN Ubuntu USN USN-1983-1 Python 2.7 vulnerabilities
Ubuntu USN Ubuntu USN USN-1984-1 Python 3.2 vulnerabilities
Ubuntu USN Ubuntu USN USN-1985-1 Python 3.3 vulnerabilities
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
http://bugs.python.org/issue18709 cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-updates/2013-09/msg00026.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-updates/2013-09/msg00027.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-updates/2013-09/msg00028.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-updates/2013-09/msg00029.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-updates/2013-09/msg00042.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-updates/2013-09/msg00043.html cve-icon cve-icon
http://rhn.redhat.com/errata/RHSA-2013-1582.html cve-icon cve-icon
http://seclists.org/fulldisclosure/2014/Dec/23 cve-icon cve-icon
http://www.debian.org/security/2014/dsa-2880 cve-icon cve-icon
http://www.securityfocus.com/archive/1/534161/100/0/threaded cve-icon cve-icon
http://www.ubuntu.com/usn/USN-1982-1 cve-icon cve-icon
http://www.vmware.com/security/advisories/VMSA-2014-0012.html cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=996381 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2013-4238 cve-icon
https://www.cve.org/CVERecord?id=CVE-2013-4238 cve-icon
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-06T16:38:01.666Z

Reserved: 2013-06-12T00:00:00.000Z

Link: CVE-2013-4238

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2013-08-18T02:52:22.943

Modified: 2025-04-11T00:51:21.963

Link: CVE-2013-4238

cve-icon Redhat

Severity : Moderate

Publid Date: 2013-08-12T00:00:00Z

Links: CVE-2013-4238 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses