CVE-2016-6210
Vulnerability from cvelistv5
Published
2017-02-13 00:00
Modified
2024-08-06 01:22
Severity ?
Summary
sshd in OpenSSH before 7.3, when SHA256 or SHA512 are used for user password hashing, uses BLOWFISH hashing on a static password when the username does not exist, which allows remote attackers to enumerate users by leveraging the timing difference between responses when a large password is provided.
References
cve@mitre.orghttp://seclists.org/fulldisclosure/2016/Jul/51Mailing List, Third Party Advisory
cve@mitre.orghttp://www.debian.org/security/2016/dsa-3626
cve@mitre.orghttp://www.securityfocus.com/bid/91812Third Party Advisory, VDB Entry
cve@mitre.orghttp://www.securitytracker.com/id/1036319
cve@mitre.orghttps://access.redhat.com/errata/RHSA-2017:2029
cve@mitre.orghttps://access.redhat.com/errata/RHSA-2017:2563
cve@mitre.orghttps://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
cve@mitre.orghttps://security.gentoo.org/glsa/201612-18
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20190206-0001/
cve@mitre.orghttps://www.exploit-db.com/exploits/40113/
cve@mitre.orghttps://www.exploit-db.com/exploits/40136/
cve@mitre.orghttps://www.openssh.com/txt/release-7.3Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2016/Jul/51Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2016/dsa-3626
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/91812Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1036319
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2017:2029
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2017:2563
af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/201612-18
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20190206-0001/
af854a3a-2127-422b-91ae-364da2661108https://www.exploit-db.com/exploits/40113/
af854a3a-2127-422b-91ae-364da2661108https://www.exploit-db.com/exploits/40136/
af854a3a-2127-422b-91ae-364da2661108https://www.openssh.com/txt/release-7.3Release Notes, Vendor Advisory
Impacted products
Vendor Product Version
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-06T01:22:20.650Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "RHSA-2017:2563",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2017:2563"
          },
          {
            "name": "1036319",
            "tags": [
              "vdb-entry",
              "x_transferred"
            ],
            "url": "http://www.securitytracker.com/id/1036319"
          },
          {
            "name": "20160714 opensshd - user enumeration",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "http://seclists.org/fulldisclosure/2016/Jul/51"
          },
          {
            "name": "DSA-3626",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "http://www.debian.org/security/2016/dsa-3626"
          },
          {
            "name": "40136",
            "tags": [
              "exploit",
              "x_transferred"
            ],
            "url": "https://www.exploit-db.com/exploits/40136/"
          },
          {
            "name": "40113",
            "tags": [
              "exploit",
              "x_transferred"
            ],
            "url": "https://www.exploit-db.com/exploits/40113/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.openssh.com/txt/release-7.3"
          },
          {
            "name": "GLSA-201612-18",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/201612-18"
          },
          {
            "name": "RHSA-2017:2029",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2017:2029"
          },
          {
            "name": "91812",
            "tags": [
              "vdb-entry",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/91812"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20190206-0001/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2016-07-14T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "sshd in OpenSSH before 7.3, when SHA256 or SHA512 are used for user password hashing, uses BLOWFISH hashing on a static password when the username does not exist, which allows remote attackers to enumerate users by leveraging the timing difference between responses when a large password is provided."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-12-13T00:00:00",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "name": "RHSA-2017:2563",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2017:2563"
        },
        {
          "name": "1036319",
          "tags": [
            "vdb-entry"
          ],
          "url": "http://www.securitytracker.com/id/1036319"
        },
        {
          "name": "20160714 opensshd - user enumeration",
          "tags": [
            "mailing-list"
          ],
          "url": "http://seclists.org/fulldisclosure/2016/Jul/51"
        },
        {
          "name": "DSA-3626",
          "tags": [
            "vendor-advisory"
          ],
          "url": "http://www.debian.org/security/2016/dsa-3626"
        },
        {
          "name": "40136",
          "tags": [
            "exploit"
          ],
          "url": "https://www.exploit-db.com/exploits/40136/"
        },
        {
          "name": "40113",
          "tags": [
            "exploit"
          ],
          "url": "https://www.exploit-db.com/exploits/40113/"
        },
        {
          "url": "https://www.openssh.com/txt/release-7.3"
        },
        {
          "name": "GLSA-201612-18",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.gentoo.org/glsa/201612-18"
        },
        {
          "name": "RHSA-2017:2029",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2017:2029"
        },
        {
          "name": "91812",
          "tags": [
            "vdb-entry"
          ],
          "url": "http://www.securityfocus.com/bid/91812"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20190206-0001/"
        },
        {
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2016-6210",
    "datePublished": "2017-02-13T00:00:00",
    "dateReserved": "2016-07-13T00:00:00",
    "dateUpdated": "2024-08-06T01:22:20.650Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2016-6210\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2017-02-13T17:59:00.153\",\"lastModified\":\"2024-11-21T02:55:40.493\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"sshd in OpenSSH before 7.3, when SHA256 or SHA512 are used for user password hashing, uses BLOWFISH hashing on a static password when the username does not exist, which allows remote attackers to enumerate users by leveraging the timing difference between responses when a large password is provided.\"},{\"lang\":\"es\",\"value\":\"sshd en OpenSSH en versiones anteriores a 7.3, cuando SHA256 o SHA512 son utilizados para el hashing de la contrase\u00f1a del usuario, utiliza BLOWFISH hashing en una contrase\u00f1a est\u00e1tica cuando no existe el nombre de usuario, lo que permite a atacantes remotos enumerar usuarios aprovechando la diferencia de tiempo entre respuestas cuando se proporciona una contrase\u00f1a grande.\"}],\"metrics\":{\"cvssMetricV30\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":5.9,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.2,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:P/I:N/A:N\",\"baseScore\":4.3,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-200\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openbsd:openssh:*:p2:*:*:*:*:*:*\",\"versionEndIncluding\":\"7.2\",\"matchCriteriaId\":\"4AFA4267-E15B-4826-9B98-63F68AB1627F\"}]}]}],\"references\":[{\"url\":\"http://seclists.org/fulldisclosure/2016/Jul/51\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://www.debian.org/security/2016/dsa-3626\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://www.securityfocus.com/bid/91812\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"http://www.securitytracker.com/id/1036319\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2017:2029\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2017:2563\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://security.gentoo.org/glsa/201612-18\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20190206-0001/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://www.exploit-db.com/exploits/40113/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://www.exploit-db.com/exploits/40136/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://www.openssh.com/txt/release-7.3\",\"source\":\"cve@mitre.org\",\"tags\":[\"Release Notes\",\"Vendor Advisory\"]},{\"url\":\"http://seclists.org/fulldisclosure/2016/Jul/51\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://www.debian.org/security/2016/dsa-3626\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.securityfocus.com/bid/91812\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"http://www.securitytracker.com/id/1036319\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2017:2029\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2017:2563\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://security.gentoo.org/glsa/201612-18\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20190206-0001/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.exploit-db.com/exploits/40113/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.exploit-db.com/exploits/40136/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.openssh.com/txt/release-7.3\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Release Notes\",\"Vendor Advisory\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.