CVE-2013-4314

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Summary

CVECVE-2013-4314
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2013-09-30 21:55:09 UTC
Updated2026-04-29 01:13:23 UTC
DescriptionThe X509Extension in pyOpenSSL before 0.13.1 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.

Risk And Classification

Primary CVSS: v2.0 4.3 from [email protected]

AV:N/AC:M/Au:N/C:N/I:P/A:N

Problem Types: CWE-20 | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None

AV:N/AC:M/Au:N/C:N/I:P/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Canonical Ubuntu Linux 10.04 - lts All
Operating System Canonical Ubuntu Linux 12.04 - lts All
Operating System Canonical Ubuntu Linux 12.10 All All All
Operating System Canonical Ubuntu Linux 13.04 All All All
Application Jean-paul Calderone Pyopenssl 0.10 All All All
Application Jean-paul Calderone Pyopenssl 0.11 All All All
Application Jean-paul Calderone Pyopenssl 0.11 a1 All All
Application Jean-paul Calderone Pyopenssl 0.11 a2 All All
Application Jean-paul Calderone Pyopenssl 0.12 All All All
Application Jean-paul Calderone Pyopenssl 0.7 All All All
Application Jean-paul Calderone Pyopenssl 0.8 a1 All All
Application Jean-paul Calderone Pyopenssl 0.9 All All All
Application Jean-paul Calderone Pyopenssl All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
USN-1965-1: pyOpenSSL vulnerability | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com Vendor Advisory
Debian -- Security Information -- DSA-2763-1 pyopenssl af854a3a-2127-422b-91ae-364da2661108 www.debian.org
Bug 1005325 – CVE-2013-4314 pyOpenSSL: hostname check bypassing vulnerability af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com
oss-security - Re: CVE request: pyOpenSSL hostname check bypassing vulnerability af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
[pyOpenSSL-Users] pyOpenSSL 0.13.1 af854a3a-2127-422b-91ae-364da2661108 mail.python.org
openSUSE-SU-2013:1648-1: moderate: update for python-pyOpenSSL af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 997513 Python (Pip) Security Update for pyOpenSSL (GHSA-6748-36qp-fx6r)

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