CVE-2016-0704 (GCVE-0-2016-0704)

Vulnerability from cvelistv5 – Published: 2016-03-02 00:00 – Updated: 2024-08-05 22:30
VLAI
Summary
An oracle protection mechanism in 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 overwrites incorrect MASTER-KEY bytes during use of export cipher suites, which makes it easier for remote attackers to decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, a related issue to CVE-2016-0800.
Severity
5.9 (Medium)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
  • n/a
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1082 records in the last 180 days details
References
URL Tags
http://www.oracle.com/technetwork/security-adviso…
http://lists.opensuse.org/opensuse-security-annou… vendor-advisory
https://security.FreeBSD.org/advisories/FreeBSD-S… vendor-advisory
http://www.oracle.com/technetwork/topics/security…
http://lists.opensuse.org/opensuse-security-annou… vendor-advisory
http://www.securityfocus.com/bid/83764 vdb-entry
http://www.oracle.com/technetwork/topics/security…
http://lists.opensuse.org/opensuse-security-annou… vendor-advisory
https://kb.pulsesecure.net/articles/Pulse_Securit…
https://drownattack.com
https://git.openssl.org/?p=openssl.git%3Ba=commit…
http://openssl.org/news/secadv/20160301.txt
http://tools.cisco.com/security/center/content/Ci… vendor-advisory
http://lists.opensuse.org/opensuse-security-annou… vendor-advisory
http://lists.opensuse.org/opensuse-security-annou… vendor-advisory
https://h20566.www2.hpe.com/hpsc/doc/public/displ…
http://lists.opensuse.org/opensuse-security-annou… vendor-advisory
https://www.openssl.org/news/secadv/20160301.txt
http://lists.opensuse.org/opensuse-security-annou… vendor-advisory
https://security.gentoo.org/glsa/201603-15 vendor-advisory
http://www.oracle.com/technetwork/topics/security…
http://lists.opensuse.org/opensuse-security-annou… vendor-advisory
http://www.securitytracker.com/id/1035133 vdb-entry
http://lists.opensuse.org/opensuse-security-annou… vendor-advisory
http://lists.opensuse.org/opensuse-security-annou… vendor-advisory
http://lists.opensuse.org/opensuse-security-annou… vendor-advisory
http://lists.opensuse.org/opensuse-security-annou… vendor-advisory
http://kb.juniper.net/InfoCenter/index?page=conte…
https://cert-portal.siemens.com/productcert/pdf/s…
Date Public
2016-03-01 00:00
Show details on NVD website
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An oracle protection mechanism in 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 overwrites incorrect MASTER-KEY bytes during use of export cipher suites, which makes it easier for remote attackers to decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, a related issue to CVE-2016-0800."
        },
        {
          "lang": "es",
          "value": "Un mecanismo de protecci\u00f3n oracle en la funci\u00f3n get_client_master_key en s2_srvr.c en la implementaci\u00f3n de SSLv2 en OpenSSL en versiones anteriores a 0.9.8zf, 1.0.0 en versiones anteriores a 1.0.0r, 1.0.1 en versiones anteriores a 1.0.1m y 1.0.2 en versiones anteriores a 1.0.2a sobrescribe MASTER-KEY bytes incorrectos durante el uso de suites de cifrado de exportaci\u00f3n, lo que facilita a atacantes remotos el descifrado de datos de texto cifrados con TLS aprovech\u00e1ndose de un Bleichenbacher RSA padding oracle, un caso relacionado con CVE-2016-0800."
        }
      ],
      "id": "CVE-2016-0704",
      "lastModified": "2024-11-21T02:42:12.097",
      "metrics": {
        "cvssMetricV2": [
          {
            "acInsufInfo": false,
            "baseSeverity": "MEDIUM",
            "cvssData": {
              "accessComplexity": "MEDIUM",
              "accessVector": "NETWORK",
              "authentication": "NONE",
              "availabilityImpact": "NONE",
              "baseScore": 4.3,
              "confidentialityImpact": "PARTIAL",
              "integrityImpact": "NONE",
              "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
              "version": "2.0"
            },
            "exploitabilityScore": 8.6,
            "impactScore": 2.9,
            "obtainAllPrivilege": false,
            "obtainOtherPrivilege": false,
            "obtainUserPrivilege": false,
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ],
        "cvssMetricV30": [
          {
            "cvssData": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 5.9,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
              "version": "3.0"
            },
            "exploitabilityScore": 2.2,
            "impactScore": 3.6,
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      },
      "published": "2016-03-02T11:59:01.363",
      "references": [
        {
          "source": "secalert@redhat.com",
          "url": "http://kb.juniper.net/InfoCenter/index?page=content\u0026id=JSA10759"
        },
        {
          "source": "secalert@redhat.com",
          "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00001.html"
        },
        {
          "source": "secalert@redhat.com",
          "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00002.html"
        },
        {
          "source": "secalert@redhat.com",
          "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00003.html"
        },
        {
          "source": "secalert@redhat.com",
          "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00004.html"
        },
        {
          "source": "secalert@redhat.com",
          "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00006.html"
        },
        {
          "source": "secalert@redhat.com",
          "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00007.html"
        },
        {
          "source": "secalert@redhat.com",
          "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00009.html"
        },
        {
          "source": "secalert@redhat.com",
          "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00010.html"
        },
        {
          "source": "secalert@redhat.com",
          "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00012.html"
        },
        {
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          "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00017.html"
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          "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00025.html"
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          "url": "http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00038.html"
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          "url": "http://openssl.org/news/secadv/20160301.txt"
        },
        {
          "source": "secalert@redhat.com",
          "url": "http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160302-openssl"
        },
        {
          "source": "secalert@redhat.com",
          "url": "http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html"
        },
        {
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          "url": "http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html"
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          "url": "http://www.securitytracker.com/id/1035133"
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        {
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          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
        },
        {
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          "url": "https://drownattack.com"
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          "url": "https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=ae50d8270026edf5b3c7f8aaa0c6677462b33d97"
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      "sourceIdentifier": "secalert@redhat.com",
      "vulnStatus": "Modified",
      "weaknesses": [
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              "lang": "en",
              "value": "CWE-200"
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          "source": "nvd@nist.gov",
          "type": "Primary"
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                "negate": false,
                "operator": "OR"
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            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "An oracle protection mechanism in 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 overwrites incorrect MASTER-KEY bytes during use of export cipher suites, which makes it easier for remote attackers to decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, a related issue to CVE-2016-0800."
          },
          {
            "lang": "es",
            "value": "Un mecanismo de protecci\u00f3n oracle en la funci\u00f3n get_client_master_key en s2_srvr.c en la implementaci\u00f3n de SSLv2 en OpenSSL en versiones anteriores a 0.9.8zf, 1.0.0 en versiones anteriores a 1.0.0r, 1.0.1 en versiones anteriores a 1.0.1m y 1.0.2 en versiones anteriores a 1.0.2a sobrescribe MASTER-KEY bytes incorrectos durante el uso de suites de cifrado de exportaci\u00f3n, lo que facilita a atacantes remotos el descifrado de datos de texto cifrados con TLS aprovech\u00e1ndose de un Bleichenbacher RSA padding oracle, un caso relacionado con CVE-2016-0800."
          }
        ],
        "id": "CVE-2016-0704",
        "lastModified": "2026-05-06T22:30:45.220",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "MEDIUM",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "NONE",
                "baseScore": 4.3,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "NONE",
                "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
                "version": "2.0"
              },
              "exploitabilityScore": 8.6,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ],
          "cvssMetricV30": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 5.9,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
                "version": "3.0"
              },
              "exploitabilityScore": 2.2,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2016-03-02T11:59:01.363",
        "references": [
          {
            "source": "secalert@redhat.com",
            "url": "http://kb.juniper.net/InfoCenter/index?page=content\u0026id=JSA10759"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00001.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00002.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00003.html"
          },
          {
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            "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00004.html"
          },
          {
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            "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00006.html"
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            "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00009.html"
          },
          {
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            "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00010.html"
          },
          {
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            "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00012.html"
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            "url": "http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160302-openssl"
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            "url": "https://www.openssl.org/news/secadv/20160301.txt"
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        ],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-200"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
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        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-05-14T18:08:51+00:00",
      "cve": "CVE-2016-0704",
      "id": "CVE-2016-0704",
      "initial_release_date": "2016-03-01T00:00:00+00:00",
      "product_status:fixed": "785",
      "product_status:known_affected": "1",
      "product_status:under_investigation": "4",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "openssl: SSLv2 Bleichenbacher protection overwrites wrong bytes for export ciphers",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2016/cve-2016-0704.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-02T08:56:11Z",
      "cve": "CVE-2016-0704",
      "id": "CVE-2016-0704",
      "initial_release_date": "2023-02-15T05:09:26Z",
      "product_status:recommended": "123",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2016-0704",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2016-0704.json",
      "version": "10"
    }
  }
}



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How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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