CVE-2016-0703
The get_client_master_key function in s2_srvr.c in the SSLv2 implementation in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a accepts a nonzero CLIENT-MASTER-KEY CLEAR-KEY-LENGTH value for an arbitrary cipher, which allows man-in-the-middle attackers to determine the MASTER-KEY value and decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, a related issue to CVE-2016-0800.
Published at
2016-03-02T11:59Z
3069 days ago
Modified
2022-12-13T12:15Z
592 days ago
CWE-200
Problem type
Impact
- CVSS v3 vector string
- CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Severity Score Vector
5.9CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:NReferences
GET https://vulnerabilitydata.com/api/details/CVE-2016-0703
{ "id": "CVE-2016-0703", "published_date": "2016-03-02T11:59Z", "last_modified_date": "2022-12-13T12:15Z", "assigner": "secalert@redhat.com", "description": "The get_client_master_key function in s2_srvr.c in the SSLv2 implementation in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a accepts a nonzero CLIENT-MASTER-KEY CLEAR-KEY-LENGTH value for an arbitrary cipher, which allows man-in-the-middle attackers to determine the MASTER-KEY value and decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, a related issue to CVE-2016-0800.", "references": [ { "url": "https://drownattack.com", "name": "https://drownattack.com", "refsource": "MISC", "tags": [] }, { "url": "https://git.openssl.org/?p=openssl.git;a=commit;h=ae50d8270026edf5b3c7f8aaa0c6677462b33d97", "name": "https://git.openssl.org/?p=openssl.git;a=commit;h=ae50d8270026edf5b3c7f8aaa0c6677462b33d97", "refsource": "CONFIRM", "tags": [] }, { "url": "http://openssl.org/news/secadv/20160301.txt", "name": "http://openssl.org/news/secadv/20160301.txt", "refsource": "CONFIRM", "tags": [ "Vendor Advisory" ] }, { "url": "https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40168", "name": "https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40168", "refsource": "CONFIRM", "tags": [] }, { "url": "https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05141441", "name": "https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05141441", "refsource": "CONFIRM", "tags": [] }, { "url": "http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html", "name": "http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html", "refsource": "CONFIRM", "tags": [] }, { "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html", "name": "http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html", "refsource": "CONFIRM", "tags": [] }, { "url": "http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html", "name": "http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html", "refsource": "CONFIRM", "tags": [] }, { "url": "http://www.securityfocus.com/bid/83743", "name": "83743", "refsource": "BID", "tags": [] }, { "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00004.html", "name": "SUSE-SU-2016:0624", "refsource": "SUSE", "tags": [] }, { "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00025.html", "name": "openSUSE-SU-2016:0720", "refsource": "SUSE", "tags": [] }, { "url": "https://www.openssl.org/news/secadv/20160301.txt", "name": "https://www.openssl.org/news/secadv/20160301.txt", "refsource": "CONFIRM", "tags": [] }, { "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00002.html", "name": "SUSE-SU-2016:0620", "refsource": "SUSE", "tags": [] }, { "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00003.html", "name": "SUSE-SU-2016:0621", "refsource": "SUSE", "tags": [] }, { "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00010.html", "name": "openSUSE-SU-2016:0638", "refsource": "SUSE", "tags": [] }, { "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00006.html", "name": "openSUSE-SU-2016:0628", "refsource": "SUSE", "tags": [] }, { "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00007.html", "name": "SUSE-SU-2016:0631", "refsource": "SUSE", "tags": [] }, { "url": "http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160302-openssl", "name": "20160302 Multiple Vulnerabilities in OpenSSL Affecting Cisco Products: March 2016", "refsource": "CISCO", "tags": [] }, { "url": "http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00038.html", "name": "SUSE-SU-2016:1057", "refsource": "SUSE", "tags": [] }, { "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00009.html", "name": "openSUSE-SU-2016:0637", "refsource": "SUSE", "tags": [] }, { "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00012.html", "name": "SUSE-SU-2016:0641", "refsource": "SUSE", "tags": [] }, { "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00001.html", "name": "SUSE-SU-2016:0617", "refsource": "SUSE", "tags": [] }, { "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00017.html", "name": "SUSE-SU-2016:0678", "refsource": "SUSE", "tags": [] }, { "url": "https://security.gentoo.org/glsa/201603-15", "name": "GLSA-201603-15", "refsource": "GENTOO", "tags": [] }, { "url": "http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759", "name": "http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759", "refsource": "CONFIRM", "tags": [] }, { "url": "https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03741en_us", "name": "https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03741en_us", "refsource": "CONFIRM", "tags": [] }, { "url": "http://www.securitytracker.com/id/1035133", "name": "1035133", "refsource": "SECTRACK", "tags": [] }, { "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-16:12.openssl.asc", "name": "FreeBSD-SA-16:12", "refsource": "FREEBSD", "tags": [] }, { "url": "http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html", "name": "http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html", "refsource": "CONFIRM", "tags": [] }, { "url": "https://www.arista.com/en/support/advisories-notices/security-advisories/1260-security-advisory-18", "name": "https://www.arista.com/en/support/advisories-notices/security-advisories/1260-security-advisory-18", "refsource": "MISC", "tags": [] }, { "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf", "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf", "refsource": "CONFIRM", "tags": [] } ], "impact": { "baseMetricV3": { "cvssV3": { "version": "3.0", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM" }, "exploitabilityScore": 2.2, "impactScore": 3.6 }, "baseMetricV2": { "cvssV2": { "version": "2.0", "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "accessVector": "NETWORK", "accessComplexity": "MEDIUM", "authentication": "NONE", "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3 }, "severity": "MEDIUM", "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false } }, "problem_type": "CWE-200" }