{"api_version":"1","generated_at":"2026-05-13T01:20:54+00:00","cve":"CVE-2017-3733","urls":{"html":"https://cve.report/CVE-2017-3733","api":"https://cve.report/api/cve/CVE-2017-3733.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2017-3733","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-3733"},"summary":{"title":"Encrypt-Then-Mac renegotiation crash","description":"During a renegotiation handshake if the Encrypt-Then-Mac extension is negotiated where it was not in the original handshake (or vice-versa) then this can cause OpenSSL 1.1.0 before 1.1.0e to crash (dependent on ciphersuite). Both clients and servers are affected.","state":"PUBLISHED","assigner":"openssl","published_at":"2017-05-04 19:29:00","updated_at":"2025-04-20 01:37:25"},"problem_types":["CWE-20","protocol error"],"metrics":[{"version":"3.0","source":"nvd@nist.gov","type":"Primary","score":"7.5","severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","data":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}},{"version":"2.0","source":"nvd@nist.gov","type":"Primary","score":"5","severity":"","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","data":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P","baseScore":5,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL"}}],"references":[{"url":"http://www.securityfocus.com/bid/96269","name":"http://www.securityfocus.com/bid/96269","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory","VDB Entry"],"title":"OpenSSL CVE-2017-3733 Denial of Service Vulnerability","mime":"text/html","httpstatus":"200","archivestatus":"0"},{"url":"http://www.securitytracker.com/id/1037846","name":"http://www.securitytracker.com/id/1037846","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"OpenSSL Flaw in Encrypt-Then-Mac Extension Negotiation Lets Remote Authenticated Users Cause the Target Service to Crash - SecurityTracker","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://github.com/openssl/openssl/commit/4ad93618d26a3ea23d36ad5498ff4f59eff3a4d2","name":"https://github.com/openssl/openssl/commit/4ad93618d26a3ea23d36ad5498ff4f59eff3a4d2","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"Don't change the state of the ETM flags until CCS processing · openssl/openssl@4ad9361 · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.openssl.org/news/secadv/20170216.txt","name":"https://www.openssl.org/news/secadv/20170216.txt","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"],"title":"","mime":"text/plain","httpstatus":"200","archivestatus":"200"},{"url":"http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html","name":"http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"Oracle Critical Patch Update - October 2017","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html","name":"http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"Oracle Critical Patch Update - January 2018","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbgn03728en_us","name":"https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbgn03728en_us","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory","VDB Entry"],"title":"Document Display | HPE Support Center","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html","name":"https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"Oracle Critical Patch Update Advisory - April 2019","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-3733","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-3733","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"OpenSSL","product":"OpenSSL","version":"affected openssl-1.1.0","platforms":[]},{"source":"CNA","vendor":"OpenSSL","product":"OpenSSL","version":"affected openssl-1.1.0a","platforms":[]},{"source":"CNA","vendor":"OpenSSL","product":"OpenSSL","version":"affected openssl-1.1.0b","platforms":[]},{"source":"CNA","vendor":"OpenSSL","product":"OpenSSL","version":"affected openssl-1.1.0c","platforms":[]},{"source":"CNA","vendor":"OpenSSL","product":"OpenSSL","version":"affected openssl-1.1.0d","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Joe Orton (Red Hat)","lang":"en"}],"nvd_cpes":[{"cve_year":"2017","cve_id":"3733","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"hp","cpe5":"operations_agent","cpe6":"11.14","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2017","cve_id":"3733","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"hp","cpe5":"operations_agent","cpe6":"11.15","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2017","cve_id":"3733","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"openssl","cpe5":"openssl","cpe6":"1.1.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2017","cve_id":"3733","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"openssl","cpe5":"openssl","cpe6":"1.1.0a","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2017","cve_id":"3733","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"openssl","cpe5":"openssl","cpe6":"1.1.0b","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2017","cve_id":"3733","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"openssl","cpe5":"openssl","cpe6":"1.1.0c","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2017","cve_id":"3733","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"openssl","cpe5":"openssl","cpe6":"1.1.0d","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"providerMetadata":{"dateUpdated":"2024-08-05T14:39:40.764Z","orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE"},"references":[{"name":"96269","tags":["vdb-entry","x_refsource_BID","x_transferred"],"url":"http://www.securityfocus.com/bid/96269"},{"tags":["x_refsource_CONFIRM","x_transferred"],"url":"https://www.openssl.org/news/secadv/20170216.txt"},{"tags":["x_refsource_CONFIRM","x_transferred"],"url":"http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html"},{"tags":["x_refsource_CONFIRM","x_transferred"],"url":"https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbgn03728en_us"},{"tags":["x_refsource_CONFIRM","x_transferred"],"url":"http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/openssl/openssl/commit/4ad93618d26a3ea23d36ad5498ff4f59eff3a4d2"},{"name":"1037846","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"],"url":"http://www.securitytracker.com/id/1037846"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html"}],"title":"CVE Program Container"}],"cna":{"affected":[{"product":"OpenSSL","vendor":"OpenSSL","versions":[{"status":"affected","version":"openssl-1.1.0"},{"status":"affected","version":"openssl-1.1.0a"},{"status":"affected","version":"openssl-1.1.0b"},{"status":"affected","version":"openssl-1.1.0c"},{"status":"affected","version":"openssl-1.1.0d"}]}],"credits":[{"lang":"en","value":"Joe Orton (Red Hat)"}],"datePublic":"2017-02-16T00:00:00.000Z","descriptions":[{"lang":"en","value":"During a renegotiation handshake if the Encrypt-Then-Mac extension is negotiated where it was not in the original handshake (or vice-versa) then this can cause OpenSSL 1.1.0 before 1.1.0e to crash (dependent on ciphersuite). Both clients and servers are affected."}],"metrics":[{"other":{"content":{"lang":"eng","url":"https://www.openssl.org/policies/secpolicy.html#High","value":"High"},"type":"unknown"}}],"problemTypes":[{"descriptions":[{"description":"protocol error","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2019-04-23T19:08:15.000Z","orgId":"3a12439a-ef3a-4c79-92e6-6081a721f1e5","shortName":"openssl"},"references":[{"name":"96269","tags":["vdb-entry","x_refsource_BID"],"url":"http://www.securityfocus.com/bid/96269"},{"tags":["x_refsource_CONFIRM"],"url":"https://www.openssl.org/news/secadv/20170216.txt"},{"tags":["x_refsource_CONFIRM"],"url":"http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html"},{"tags":["x_refsource_CONFIRM"],"url":"https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbgn03728en_us"},{"tags":["x_refsource_CONFIRM"],"url":"http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html"},{"tags":["x_refsource_MISC"],"url":"https://github.com/openssl/openssl/commit/4ad93618d26a3ea23d36ad5498ff4f59eff3a4d2"},{"name":"1037846","tags":["vdb-entry","x_refsource_SECTRACK"],"url":"http://www.securitytracker.com/id/1037846"},{"tags":["x_refsource_MISC"],"url":"https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html"}],"title":"Encrypt-Then-Mac renegotiation crash","x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"openssl-security@openssl.org","DATE_PUBLIC":"2017-02-16","ID":"CVE-2017-3733","STATE":"PUBLIC","TITLE":"Encrypt-Then-Mac renegotiation crash"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"OpenSSL","version":{"version_data":[{"version_value":"openssl-1.1.0"},{"version_value":"openssl-1.1.0a"},{"version_value":"openssl-1.1.0b"},{"version_value":"openssl-1.1.0c"},{"version_value":"openssl-1.1.0d"}]}}]},"vendor_name":"OpenSSL"}]}},"credit":[{"lang":"eng","value":"Joe Orton (Red Hat)"}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"During a renegotiation handshake if the Encrypt-Then-Mac extension is negotiated where it was not in the original handshake (or vice-versa) then this can cause OpenSSL 1.1.0 before 1.1.0e to crash (dependent on ciphersuite). Both clients and servers are affected."}]},"impact":[{"lang":"eng","url":"https://www.openssl.org/policies/secpolicy.html#High","value":"High"}],"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"protocol error"}]}]},"references":{"reference_data":[{"name":"96269","refsource":"BID","url":"http://www.securityfocus.com/bid/96269"},{"name":"https://www.openssl.org/news/secadv/20170216.txt","refsource":"CONFIRM","url":"https://www.openssl.org/news/secadv/20170216.txt"},{"name":"http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html","refsource":"CONFIRM","url":"http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html"},{"name":"https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbgn03728en_us","refsource":"CONFIRM","url":"https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbgn03728en_us"},{"name":"http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html","refsource":"CONFIRM","url":"http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html"},{"name":"https://github.com/openssl/openssl/commit/4ad93618d26a3ea23d36ad5498ff4f59eff3a4d2","refsource":"MISC","url":"https://github.com/openssl/openssl/commit/4ad93618d26a3ea23d36ad5498ff4f59eff3a4d2"},{"name":"1037846","refsource":"SECTRACK","url":"http://www.securitytracker.com/id/1037846"},{"name":"https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html","refsource":"MISC","url":"https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html"}]}}}},"cveMetadata":{"assignerOrgId":"3a12439a-ef3a-4c79-92e6-6081a721f1e5","assignerShortName":"openssl","cveId":"CVE-2017-3733","datePublished":"2017-05-04T19:00:00.000Z","dateReserved":"2016-12-16T00:00:00.000Z","dateUpdated":"2024-09-16T16:18:03.381Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"},"nvd":{"publishedDate":"2017-05-04 19:29:00","lastModifiedDate":"2025-04-20 01:37:25","problem_types":["CWE-20","protocol error"],"metrics":{"cvssMetricV30":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P","baseScore":5,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":10,"impactScore":2.9,"acInsufInfo":true,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:openssl:openssl:1.1.0:*:*:*:*:*:*:*","matchCriteriaId":"73104834-5810-48DD-9B97-549D223853F1"},{"vulnerable":true,"criteria":"cpe:2.3:a:openssl:openssl:1.1.0a:*:*:*:*:*:*:*","matchCriteriaId":"C9D7A18A-116B-4F68-BEA3-A4E9DDDA55C6"},{"vulnerable":true,"criteria":"cpe:2.3:a:openssl:openssl:1.1.0b:*:*:*:*:*:*:*","matchCriteriaId":"CFC70262-0DCD-4B46-9C96-FD18D0207511"},{"vulnerable":true,"criteria":"cpe:2.3:a:openssl:openssl:1.1.0c:*:*:*:*:*:*:*","matchCriteriaId":"B2E07A34-08A0-4765-AF81-46A3BDC5648A"},{"vulnerable":true,"criteria":"cpe:2.3:a:openssl:openssl:1.1.0d:*:*:*:*:*:*:*","matchCriteriaId":"83B0A3D8-60C7-4F42-9DD6-C535F983D98B"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:hp:operations_agent:11.14:*:*:*:*:*:*:*","matchCriteriaId":"739CE0EF-9D08-4A26-A82A-A117DBBF0717"},{"vulnerable":true,"criteria":"cpe:2.3:a:hp:operations_agent:11.15:*:*:*:*:*:*:*","matchCriteriaId":"3429CA31-3B98-4227-8FB5-A56CAFFD641E"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2017","CveId":"3733","Ordinal":"1","Title":"Encrypt-Then-Mac renegotiation crash","CVE":"CVE-2017-3733","Year":"2017"},"notes":[{"CveYear":"2017","CveId":"3733","Ordinal":"1","NoteData":"During a renegotiation handshake if the Encrypt-Then-Mac extension is negotiated where it was not in the original handshake (or vice-versa) then this can cause OpenSSL 1.1.0 before 1.1.0e to crash (dependent on ciphersuite). Both clients and servers are affected.","Type":"Description","Title":"Encrypt-Then-Mac renegotiation crash"},{"CveYear":"2017","CveId":"3733","Ordinal":"2","NoteData":"2017-05-04","Type":"Other","Title":"Published"},{"CveYear":"2017","CveId":"3733","Ordinal":"3","NoteData":"2019-04-23","Type":"Other","Title":"Modified"}]}}}