Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS02NzQ4LTM2cXAtZng2cs4AAe3I

PyOpenSSL Mishandles NUL Byte In Certificate Subject Alternative Name

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.

Permalink: https://github.com/advisories/GHSA-6748-36qp-fx6r
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS02NzQ4LTM2cXAtZng2cs4AAe3I
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: about 2 years ago
Updated: 3 months ago

Identifiers: GHSA-6748-36qp-fx6r, CVE-2013-4314
References:

• https://nvd.nist.gov/vuln/detail/CVE-2013-4314
• https://bugzilla.redhat.com/show_bug.cgi?id=1005325
• https://mail.python.org/pipermail/pyopenssl-users/2013-September/000478.html
• http://lists.opensuse.org/opensuse-updates/2013-11/msg00015.html
• http://www.debian.org/security/2013/dsa-2763
• http://www.openwall.com/lists/oss-security/2013/09/06/2
• http://www.ubuntu.com/usn/USN-1965-1
• https://github.com/pyca/pyopenssl/commit/6bbf44a00b35fb28df1f66aa194b2fe95eab1ab2
• https://github.com/advisories/GHSA-6748-36qp-fx6r

Repository: https://github.com/pyca/pyopenssl
Blast Radius: 0.0

Affected Packages