{"id":"CVE-2017-3730","aliases":["DEBIAN-CVE-2017-3730","EUVD-2017-12847","GHSA-rq64-8m54-26j4"],"status":"published","title":"Bad (EC)DHE parameters cause a client crash","description":"In OpenSSL 1.1.0 before 1.1.0d, if a malicious server supplies bad parameters for a DHE or ECDHE key exchange then this can result in the client attempting to dereference a NULL pointer leading to a client crash. This could be exploited in a Denial of Service attack.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.55294,"percentile":0.99045,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-476"],"published":"2017-05-04T19:00:00Z","modified":"2026-10-24T14:02:31Z","exploits":[{"source":"exploitdb","id":"EDB-41192","title":"OpenSSL 1.1.0 - Remote Client Denial of Service","type":"dos","platform":"multiple","date":"2017-01-26","url":"https://www.exploit-db.com/exploits/41192"},{"source":"pocgithub","id":"HavocParasite/CVE-2017-3730","title":"HavocParasite/CVE-2017-3730","date":"2017-04-10","url":"https://github.com/HavocParasite/CVE-2017-3730"}],"fixes":[{"ecosystem":"Debian:12","package":"openssl","fixed_in":["1.1.0d-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"openssl","fixed_in":["1.1.0d-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"openssl","fixed_in":["1.1.0d-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"openssl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.0d-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"openssl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.0d-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"openssl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.0d-1"}]}]}],"products":[{"vendor":"openssl","product":"openssl"},{"vendor":"oracle","product":"agile_engineering_data_management"},{"vendor":"oracle","product":"communications_application_session_controller"},{"vendor":"oracle","product":"communications_eagle_lnp_application_processor"},{"vendor":"oracle","product":"communications_operations_monitor"},{"vendor":"oracle","product":"jd_edwards_enterpriseone_tools"},{"vendor":"oracle","product":"jd_edwards_world_security"}],"references":[{"url":"http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html","tags":["x_refsource_CONFIRM","x_transferred","Patch","fix"]},{"url":"https://www.exploit-db.com/exploits/41192/","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred","Exploit","Third Party Advisory","VDB Entry","evidence"]},{"url":"http://www.securityfocus.com/bid/95812","tags":["vdb-entry","x_refsource_BID","x_transferred","Broken Link","Third Party Advisory","VDB Entry","advisory"]},{"url":"https://github.com/openssl/openssl/commit/efbe126e3ebb9123ac9d058aa2bb044261342aaa","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://www.openssl.org/news/secadv/20170126.txt","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory","fix"]},{"url":"http://www.securitytracker.com/id/1037717","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html","tags":["x_refsource_CONFIRM","x_transferred","Patch","fix"]},{"url":"https://security.gentoo.org/glsa/201702-07","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","Third Party Advisory","advisory"]},{"url":"https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US\u0026docId=emr_na-hpesbhf03838en_us","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory"]},{"url":"https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html","tags":["x_refsource_MISC","x_transferred","Patch","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-3730"},{"url":"https://www.exploit-db.com/exploits/41192"},{"url":"https://github.com/advisories/GHSA-rq64-8m54-26j4"},{"url":"https://security-tracker.debian.org/tracker/CVE-2017-3730","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2017-3730","title":"Bad (EC)DHE parameters cause a client crash","description":"In OpenSSL 1.1.0 before 1.1.0d, if a malicious server supplies bad parameters for a DHE or ECDHE key exchange then this can result in the client attempting to dereference a NULL pointer leading to a client crash. This could be exploited in a Denial of Service attack.","status":"published","published":"2017-05-04T19:00:00Z","modified":"2024-09-16T17:48:53.722Z","updated_at":"2026-11-02T14:33:16.232024Z"}],"euvd":[{"id":"EUVD-2017-12847","description":"In OpenSSL 1.1.0 before 1.1.0d, if a malicious server supplies bad parameters for a DHE or ECDHE key exchange then this can result in the client attempting to dereference a NULL pointer leading to a client crash. This could be exploited in a Denial of Service attack.","status":"published","published":"2017-05-04T19:00:00Z","modified":"2024-09-16T17:48:53Z","updated_at":"2026-11-03T00:55:38.742114Z"}],"ghsa":[{"id":"GHSA-rq64-8m54-26j4","title":"In OpenSSL 1.1.0 before 1.1.0d, if a malicious server supplies bad parameters for a DHE or ECDHE...","description":"In OpenSSL 1.1.0 before 1.1.0d, if a malicious server supplies bad parameters for a DHE or ECDHE key exchange then this can result in the client attempting to dereference a NULL pointer leading to a client crash. This could be exploited in a Denial of Service attack.","status":"published","published":"2022-05-14T01:07:00Z","modified":"2025-04-20T03:38:16Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T15:01:45.743786Z"}],"nvd":[{"id":"CVE-2017-3730","description":"In OpenSSL 1.1.0 before 1.1.0d, if a malicious server supplies bad parameters for a DHE or ECDHE key exchange then this can result in the client attempting to dereference a NULL pointer leading to a client crash. This could be exploited in a Denial of Service attack.","status":"published","published":"2017-05-04T19:29:00.32Z","modified":"2026-06-17T01:18:48.153Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:03:47.848196Z"}],"osv":[{"id":"CVE-2017-3730","description":"In OpenSSL 1.1.0 before 1.1.0d, if a malicious server supplies bad parameters for a DHE or ECDHE key exchange then this can result in the client attempting to dereference a NULL pointer leading to a client crash. This could be exploited in a Denial of Service attack.","status":"published","published":"2017-05-04T19:29:00.32Z","modified":"2026-11-11T13:21:58.746232497Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-11T11:06:13.792167Z"},{"id":"DEBIAN-CVE-2017-3730","description":"In OpenSSL 1.1.0 before 1.1.0d, if a malicious server supplies bad parameters for a DHE or ECDHE key exchange then this can result in the client attempting to dereference a NULL pointer leading to a client crash. This could be exploited in a Denial of Service attack.","status":"published","published":"2017-05-04T19:29:00.32Z","modified":"2026-09-01T20:03:47.898216406Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:29.100767Z"}]}}