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.
Published: 2013-08-18
Score: 4.3 Medium
EPSS: 1.4% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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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
History

No history.

Subscriptions

Canonical Ubuntu Linux
Opensuse Opensuse
Python Python
Redhat Enterprise Linux
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 : Modified

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

Modified: 2026-04-29T01:13:23.040

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