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FKIE_CVE-2016-7056

Vulnerability from fkie_nvd - Published: 2018-09-10 16:29 - Updated: 2026-06-17 00:52
Summary
A timing attack flaw was found in OpenSSL 1.0.1u and before that could allow a malicious user with local access to recover ECDSA P-256 private keys.
References
secalert@redhat.comhttp://rhn.redhat.com/errata/RHSA-2017-1415.htmlThird Party Advisory
secalert@redhat.comhttp://www.securityfocus.com/bid/95375Third Party Advisory, VDB Entry
secalert@redhat.comhttp://www.securitytracker.com/id/1037575Patch, Third Party Advisory, VDB Entry
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2017:1413Third Party Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2017:1414Third Party Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2017:1801Third Party Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2017:1802Third Party Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7056Issue Tracking, Patch, Third Party Advisory
secalert@redhat.comhttps://eprint.iacr.org/2016/1195Third Party Advisory
secalert@redhat.comhttps://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/033_libcrypto.patch.sigPatch, Third Party Advisory
secalert@redhat.comhttps://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/016_libcrypto.patch.sigPatch, Third Party Advisory
secalert@redhat.comhttps://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=8aed2a7548362e88e84a7feb795a3a97e8395008
secalert@redhat.comhttps://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-7056.htmlPatch, Third Party Advisory
secalert@redhat.comhttps://seclists.org/oss-sec/2017/q1/52Mailing List, Third Party Advisory
secalert@redhat.comhttps://security-tracker.debian.org/tracker/CVE-2016-7056Patch, Third Party Advisory, VDB Entry
secalert@redhat.comhttps://www.debian.org/security/2017/dsa-3773Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://rhn.redhat.com/errata/RHSA-2017-1415.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/95375Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1037575Patch, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2017:1413Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2017:1414Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2017:1801Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2017:1802Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7056Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://eprint.iacr.org/2016/1195Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/033_libcrypto.patch.sigPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/016_libcrypto.patch.sigPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=8aed2a7548362e88e84a7feb795a3a97e8395008
af854a3a-2127-422b-91ae-364da2661108https://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-7056.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://seclists.org/oss-sec/2017/q1/52Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security-tracker.debian.org/tracker/CVE-2016-7056Patch, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2017/dsa-3773Third Party Advisory

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "openssl",
          "vendor": "The OpenSSL Project",
          "versions": [
            {
              "status": "affected",
              "version": "openssl 1.0.1u"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "F8171E97-CCEE-4CE4-8BEE-472FCE7ABCD8",
              "versionEndIncluding": "1.0.1u",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
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              "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252",
              "vulnerable": true
            }
          ],
          "negate": false,
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        }
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    },
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              "vulnerable": true
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              "vulnerable": true
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              "vulnerable": true
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            {
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              "vulnerable": true
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          ],
          "negate": false,
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      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A timing attack flaw was found in OpenSSL 1.0.1u and before that could allow a malicious user with local access to recover ECDSA P-256 private keys."
    },
    {
      "lang": "es",
      "value": "Se ha encontrado un error de ataque de sincronizaci\u00f3n en OpenSSL, en versiones 1.0.1u y anteriores, que podr\u00eda permitir que un usuario malicioso con acceso local recupere claves privadas ECDSA P-256"
    }
  ],
  "id": "CVE-2016-7056",
  "lastModified": "2026-06-17T00:52:15.933",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 2.1,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
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        "cvssData": {
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          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.0"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "secalert@redhat.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.0"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2018-09-10T16:29:00.543",
  "references": [
    {
      "source": "secalert@redhat.com",
      "tags": [
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      ],
      "url": "http://rhn.redhat.com/errata/RHSA-2017-1415.html"
    },
    {
      "source": "secalert@redhat.com",
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      "url": "http://www.securityfocus.com/bid/95375"
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    {
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    },
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      ],
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    },
    {
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    },
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    },
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  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-385"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-320"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Secondary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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