CVE-2013-4314

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.

🔗 References (12)

• secalert@redhathttp://lists.opensuse.org/opensuse-updates/2013-11/msg00015.html
• secalert@redhathttp://www.debian.org/security/2013/dsa-2763
• secalert@redhathttp://www.openwall.com/lists/oss-security/2013/09/06/2
• secalert@redhathttp://www.ubuntu.com/usn/USN-1965-1
• secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=1005325
• secalert@redhathttps://mail.python.org/pipermail/pyopenssl-users/2013-September/000478.html
• af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-updates/2013-11/msg00015.html
• af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2013/dsa-2763
• af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2013/09/06/2
• af854a3a-2127-422b-91ae-364da2661108http://www.ubuntu.com/usn/USN-1965-1
• af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1005325
• af854a3a-2127-422b-91ae-364da2661108https://mail.python.org/pipermail/pyopenssl-users/2013-September/000478.html