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
2986 days ago
Modified
2022-12-13T12:15Z
509 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"
}