{"id":"PYSEC-2013-31","details":"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.","aliases":["CVE-2013-4314","GHSA-6748-36qp-fx6r"],"modified":"2024-02-23T21:12:02.336133Z","published":"2013-09-30T21:55:00Z","references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2013/09/06/2"},{"type":"WEB","url":"https://mail.python.org/pipermail/pyopenssl-users/2013-September/000478.html"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1005325"},{"type":"ADVISORY","url":"http://www.ubuntu.com/usn/USN-1965-1"},{"type":"ADVISORY","url":"http://www.debian.org/security/2013/dsa-2763"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-updates/2013-11/msg00015.html"}],"affected":[{"package":{"name":"pyopenssl","ecosystem":"PyPI","purl":"pkg:pypi/pyopenssl"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.13.1"}]}],"versions":["0.10","0.11","0.12","0.13","0.6","0.7","0.8","0.9"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/pyopenssl/PYSEC-2013-31.yaml"}}],"schema_version":"1.7.3"}