CVE-2013-4238

N/A Unknown
Published: August 18, 2013 Modified: April 29, 2026
View on NVD

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.

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References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://bugs.python.org/issue18709
Source: secalert@redhat.com
Patch
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html
Source: secalert@redhat.com
http://lists.opensuse.org/opensuse-updates/2013-09/msg00026.html
Source: secalert@redhat.com
Vendor Advisory
http://lists.opensuse.org/opensuse-updates/2013-09/msg00027.html
Source: secalert@redhat.com
Vendor Advisory
http://lists.opensuse.org/opensuse-updates/2013-09/msg00028.html
Source: secalert@redhat.com
Vendor Advisory
http://lists.opensuse.org/opensuse-updates/2013-09/msg00029.html
Source: secalert@redhat.com
Vendor Advisory
http://lists.opensuse.org/opensuse-updates/2013-09/msg00042.html
Source: secalert@redhat.com
Vendor Advisory
http://lists.opensuse.org/opensuse-updates/2013-09/msg00043.html
Source: secalert@redhat.com
Vendor Advisory
http://rhn.redhat.com/errata/RHSA-2013-1582.html
Source: secalert@redhat.com
http://seclists.org/fulldisclosure/2014/Dec/23
Source: secalert@redhat.com
http://www.debian.org/security/2014/dsa-2880
Source: secalert@redhat.com
http://www.securityfocus.com/archive/1/534161/100/0/threaded
Source: secalert@redhat.com
http://www.ubuntu.com/usn/USN-1982-1
Source: secalert@redhat.com
Vendor Advisory
http://www.vmware.com/security/advisories/VMSA-2014-0012.html
Source: secalert@redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=996381
Source: secalert@redhat.com
Patch
http://bugs.python.org/issue18709
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://lists.opensuse.org/opensuse-updates/2013-09/msg00026.html
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://lists.opensuse.org/opensuse-updates/2013-09/msg00027.html
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://lists.opensuse.org/opensuse-updates/2013-09/msg00028.html
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://lists.opensuse.org/opensuse-updates/2013-09/msg00029.html
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://lists.opensuse.org/opensuse-updates/2013-09/msg00042.html
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://lists.opensuse.org/opensuse-updates/2013-09/msg00043.html
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://rhn.redhat.com/errata/RHSA-2013-1582.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://seclists.org/fulldisclosure/2014/Dec/23
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.debian.org/security/2014/dsa-2880
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.securityfocus.com/archive/1/534161/100/0/threaded
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.ubuntu.com/usn/USN-1982-1
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://www.vmware.com/security/advisories/VMSA-2014-0012.html
Source: af854a3a-2127-422b-91ae-364da2661108
https://bugzilla.redhat.com/show_bug.cgi?id=996381
Source: af854a3a-2127-422b-91ae-364da2661108
Patch

30 reference(s) from NVD

Quick Stats

CVSS v3 Score
N/A / 10.0
EPSS (Exploit Probability)
1.4%
80th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-20

Affected Vendors

canonical opensuse python

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