What is the CVSS score of CVE-2013-4314?

CVE-2013-4314 has a CVSS 2.0 base score of 4.3 (Medium). CVSS vector: AV:N/AC:M/Au:N/C:N/I:P/A:N. EPSS exploitation probability: 0.2%.

Is there a patch available for CVE-2013-4314?

Yes, a patch is available for CVE-2013-4314. Update the affected software to the latest version immediately.

Pyopenssl CVE-2013-4314

MEDIUM

Improper Input Validation (CWE-20)

2013-09-30 secalert@redhat.com

Information Disclosure Pyopenssl Ubuntu Linux

4.3

CVSS 2.0 · NVD

Severity by source

NVD PRIMARY

4.3 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Confidentiality

None

Integrity

Availability

None

Lifecycle Timeline

CVE Published

Sep 30, 2013 - 21:55 cve.org

MEDIUM 4.3

Blast Radius

ecosystem impact

† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth

1 pypi packages depend on pyopenssl (1 direct, 0 indirect)

Ecosystem-wide dependent count for version 0.13.1.

DescriptionCVE.org

The 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.

AnalysisAI

The 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. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable.

Technical ContextAI

This vulnerability is classified under CWE-20. The 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. Affected products include: Jean-Paul Calderone Pyopenssl, Canonical Ubuntu Linux. Version information: before 0.13.1.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.