CVE-2016-6515
Vulnerability from cvelistv5
Published
2016-08-07 00:00
Modified
2024-08-06 01:29
Severity ?
Summary
The auth_password function in auth-passwd.c in sshd in OpenSSH before 7.3 does not limit password lengths for password authentication, which allows remote attackers to cause a denial of service (crypt CPU consumption) via a long string.
References
cve@mitre.orghttp://openwall.com/lists/oss-security/2016/08/01/2Third Party Advisory, VDB Entry
cve@mitre.orghttp://packetstormsecurity.com/files/140070/OpenSSH-7.2-Denial-Of-Service.html
cve@mitre.orghttp://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
cve@mitre.orghttp://www.securityfocus.com/bid/92212
cve@mitre.orghttp://www.securitytracker.com/id/1036487
cve@mitre.orghttps://access.redhat.com/errata/RHSA-2017:2029
cve@mitre.orghttps://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
cve@mitre.orghttps://cert-portal.siemens.com/productcert/pdf/ssa-676336.pdf
cve@mitre.orghttps://github.com/openssh/openssh-portable/commit/fcd135c9df440bcd2d5870405ad3311743d78d97Issue Tracking, Patch
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2018/09/msg00010.html
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X2L6RW34VFNXYNVVN2CN73YAGJ5VMTFU/
cve@mitre.orghttps://security.FreeBSD.org/advisories/FreeBSD-SA-17:06.openssh.asc
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20171130-0003/
cve@mitre.orghttps://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03779en_us
cve@mitre.orghttps://www.exploit-db.com/exploits/40888/
af854a3a-2127-422b-91ae-364da2661108http://openwall.com/lists/oss-security/2016/08/01/2Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/140070/OpenSSH-7.2-Denial-Of-Service.html
af854a3a-2127-422b-91ae-364da2661108http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/92212
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1036487
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2017:2029
af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/pdf/ssa-676336.pdf
af854a3a-2127-422b-91ae-364da2661108https://github.com/openssh/openssh-portable/commit/fcd135c9df440bcd2d5870405ad3311743d78d97Issue Tracking, Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X2L6RW34VFNXYNVVN2CN73YAGJ5VMTFU/
af854a3a-2127-422b-91ae-364da2661108https://security.FreeBSD.org/advisories/FreeBSD-SA-17:06.openssh.asc
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20171130-0003/
af854a3a-2127-422b-91ae-364da2661108https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03779en_us
af854a3a-2127-422b-91ae-364da2661108https://www.exploit-db.com/exploits/40888/
Impacted products
Vendor Product Version
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-06T01:29:20.223Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US\u0026docId=emr_na-hpesbhf03779en_us"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20171130-0003/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/openssh/openssh-portable/commit/fcd135c9df440bcd2d5870405ad3311743d78d97"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "http://packetstormsecurity.com/files/140070/OpenSSH-7.2-Denial-Of-Service.html"
          },
          {
            "name": "40888",
            "tags": [
              "exploit",
              "x_transferred"
            ],
            "url": "https://www.exploit-db.com/exploits/40888/"
          },
          {
            "name": "92212",
            "tags": [
              "vdb-entry",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/92212"
          },
          {
            "name": "FreeBSD-SA-17:06",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-17:06.openssh.asc"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html"
          },
          {
            "name": "1036487",
            "tags": [
              "vdb-entry",
              "x_transferred"
            ],
            "url": "http://www.securitytracker.com/id/1036487"
          },
          {
            "name": "FEDORA-2016-4a3debc3a6",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X2L6RW34VFNXYNVVN2CN73YAGJ5VMTFU/"
          },
          {
            "name": "RHSA-2017:2029",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2017:2029"
          },
          {
            "name": "[debian-lts-announce] 20180910 [SECURITY] [DLA 1500-1] openssh security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html"
          },
          {
            "name": "[oss-security] 20160801 Announce: OpenSSH 7.3 released",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "http://openwall.com/lists/oss-security/2016/08/01/2"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-676336.pdf"
          },
          {
            "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": "2016-08-01T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "The auth_password function in auth-passwd.c in sshd in OpenSSH before 7.3 does not limit password lengths for password authentication, which allows remote attackers to cause a denial of service (crypt CPU consumption) via a long string."
        }
      ],
      "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": [
        {
          "url": "https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US\u0026docId=emr_na-hpesbhf03779en_us"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20171130-0003/"
        },
        {
          "url": "https://github.com/openssh/openssh-portable/commit/fcd135c9df440bcd2d5870405ad3311743d78d97"
        },
        {
          "url": "http://packetstormsecurity.com/files/140070/OpenSSH-7.2-Denial-Of-Service.html"
        },
        {
          "name": "40888",
          "tags": [
            "exploit"
          ],
          "url": "https://www.exploit-db.com/exploits/40888/"
        },
        {
          "name": "92212",
          "tags": [
            "vdb-entry"
          ],
          "url": "http://www.securityfocus.com/bid/92212"
        },
        {
          "name": "FreeBSD-SA-17:06",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-17:06.openssh.asc"
        },
        {
          "url": "http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html"
        },
        {
          "name": "1036487",
          "tags": [
            "vdb-entry"
          ],
          "url": "http://www.securitytracker.com/id/1036487"
        },
        {
          "name": "FEDORA-2016-4a3debc3a6",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X2L6RW34VFNXYNVVN2CN73YAGJ5VMTFU/"
        },
        {
          "name": "RHSA-2017:2029",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2017:2029"
        },
        {
          "name": "[debian-lts-announce] 20180910 [SECURITY] [DLA 1500-1] openssh security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html"
        },
        {
          "name": "[oss-security] 20160801 Announce: OpenSSH 7.3 released",
          "tags": [
            "mailing-list"
          ],
          "url": "http://openwall.com/lists/oss-security/2016/08/01/2"
        },
        {
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-676336.pdf"
        },
        {
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2016-6515",
    "datePublished": "2016-08-07T00:00:00",
    "dateReserved": "2016-08-01T00:00:00",
    "dateUpdated": "2024-08-06T01:29:20.223Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2016-6515\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2016-08-07T21:59:09.943\",\"lastModified\":\"2024-11-21T02:56:16.317\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The auth_password function in auth-passwd.c in sshd in OpenSSH before 7.3 does not limit password lengths for password authentication, which allows remote attackers to cause a denial of service (crypt CPU consumption) via a long string.\"},{\"lang\":\"es\",\"value\":\"La funci\u00f3n auth_password en auth-passwd.c en sshd en OpenSSH en versiones anteriores a 7.3 no limita longitudes de contrase\u00f1a para autenticaci\u00f3n de contrase\u00f1a, lo que permite a atacantes remotos provocar una denegaci\u00f3n de servicio (consumo de CPU clave) a trav\u00e9s de una cadena larga.\"}],\"metrics\":{\"cvssMetricV30\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:N/I:N/A:C\",\"baseScore\":7.8,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"COMPLETE\"},\"baseSeverity\":\"HIGH\",\"exploitabilityScore\":10.0,\"impactScore\":6.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-20\"}]}],\"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\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"C729D5D1-ED95-443A-9F53-5D7C2FD9B80C\"}]}]}],\"references\":[{\"url\":\"http://openwall.com/lists/oss-security/2016/08/01/2\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"http://packetstormsecurity.com/files/140070/OpenSSH-7.2-Denial-Of-Service.html\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://www.securityfocus.com/bid/92212\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://www.securitytracker.com/id/1036487\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2017:2029\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-676336.pdf\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://github.com/openssh/openssh-portable/commit/fcd135c9df440bcd2d5870405ad3311743d78d97\",\"source\":\"cve@mitre.org\",\"tags\":[\"Issue Tracking\",\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X2L6RW34VFNXYNVVN2CN73YAGJ5VMTFU/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://security.FreeBSD.org/advisories/FreeBSD-SA-17:06.openssh.asc\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20171130-0003/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US\u0026docId=emr_na-hpesbhf03779en_us\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://www.exploit-db.com/exploits/40888/\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://openwall.com/lists/oss-security/2016/08/01/2\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"http://packetstormsecurity.com/files/140070/OpenSSH-7.2-Denial-Of-Service.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.securityfocus.com/bid/92212\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.securitytracker.com/id/1036487\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2017:2029\",\"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://cert-portal.siemens.com/productcert/pdf/ssa-676336.pdf\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://github.com/openssh/openssh-portable/commit/fcd135c9df440bcd2d5870405ad3311743d78d97\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\",\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X2L6RW34VFNXYNVVN2CN73YAGJ5VMTFU/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://security.FreeBSD.org/advisories/FreeBSD-SA-17:06.openssh.asc\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20171130-0003/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US\u0026docId=emr_na-hpesbhf03779en_us\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.exploit-db.com/exploits/40888/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


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.