{"id":"CVE-2009-0653","details":"OpenSSL, probably 0.9.6, does not verify the Basic Constraints for an intermediate CA-signed certificate, which allows remote attackers to spoof the certificates of trusted sites via a man-in-the-middle attack, a related issue to CVE-2002-0970.","modified":"2026-04-10T03:40:37.233161Z","published":"2009-02-20T19:30:00Z","references":[{"type":"EVIDENCE","url":"https://www.blackhat.com/presentations/bh-dc-09/Marlinspike/BlackHat-DC-09-Marlinspike-Defeating-SSL.pdf"},{"type":"WEB","url":"http://www.blackhat.com/html/bh-dc-09/bh-dc-09-speakers.html#Marlinspike"}],"schema_version":"1.7.5"}