cve-2016-6210
Vulnerability from cvelistv5
Published
2017-02-13 00:00
Modified
2024-08-06 01:22
Severity ?
EPSS score ?
92.49% (0.99733)
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
n/a n/a Version: n/a
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 contraseña del usuario, utiliza BLOWFISH hashing en una contraseña estática 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 contraseña 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.

Security Advisory comment format.

This schema specifies the format of a comment related to a security advisory.

UUIDv4 of the comment
UUIDv4 of the Vulnerability-Lookup instance
When the comment was created originally
When the comment was last updated
Title of the comment
Description of the comment
The identifier of the vulnerability (CVE ID, GHSA-ID, PYSEC ID, etc.).



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.