{"id":"CVE-2009-0653","aliases":["DEBIAN-CVE-2009-0653","EUVD-2009-0656","GHSA-gj63-3383-h48m"],"status":"published","title":"OpenSSL, probably 0.9.6, does not verify the Basic Constraints for an intermediate CA-signed...","description":"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.","severity":{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01148,"percentile":0.67059,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-287"],"published":"2009-02-20T19:00:00Z","modified":"2026-10-23T17:47:49Z","fixes":[{"ecosystem":"Debian:12","package":"openssl","fixed_in":["0.9.8-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"openssl","fixed_in":["0.9.8-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"openssl","fixed_in":["0.9.8-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"openssl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.8-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"openssl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.8-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"openssl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.8-1"}]}]}],"products":[{"vendor":"openssl","product":"openssl"}],"references":[{"url":"https://www.blackhat.com/presentations/bh-dc-09/Marlinspike/BlackHat-DC-09-Marlinspike-Defeating-SSL.pdf","tags":["x_refsource_MISC","x_transferred","Exploit","evidence"]},{"url":"http://www.blackhat.com/html/bh-dc-09/bh-dc-09-speakers.html#Marlinspike","tags":["x_refsource_MISC","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-0653"},{"url":"https://github.com/advisories/GHSA-gj63-3383-h48m"},{"url":"https://security-tracker.debian.org/tracker/CVE-2009-0653","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2009-0653","description":"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.","status":"published","published":"2009-02-20T19:00:00Z","modified":"2024-09-16T18:29:32.47Z","updated_at":"2026-11-02T14:33:25.896677Z"}],"euvd":[{"id":"EUVD-2009-0656","description":"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.","status":"published","published":"2009-02-20T19:00:00Z","modified":"2024-09-16T18:29:32Z","updated_at":"2026-11-03T00:55:32.095421Z"}],"ghsa":[{"id":"GHSA-gj63-3383-h48m","title":"OpenSSL, probably 0.9.6, does not verify the Basic Constraints for an intermediate CA-signed...","description":"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.","status":"published","published":"2022-05-02T03:17:08Z","modified":"2023-01-31T05:07:58Z","cwes":["CWE-287"],"updated_at":"2026-11-02T14:49:18.929475Z"}],"nvd":[{"id":"CVE-2009-0653","description":"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.","status":"published","published":"2009-02-20T19:30:00.28Z","modified":"2026-06-16T23:05:30.22Z","cvss":[{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:01:33.417327Z"}],"osv":[{"id":"CVE-2009-0653","description":"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.","status":"published","published":"2009-02-20T19:30:00Z","modified":"2026-04-10T03:40:37.233161Z","updated_at":"2026-11-02T15:43:57.452479Z"},{"id":"DEBIAN-CVE-2009-0653","description":"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.","status":"published","published":"2009-02-20T19:30:00.28Z","modified":"2026-10-23T17:47:49.416415574Z","updated_at":"2026-11-02T15:45:23.742363Z"}]}}