cve-2016-8858
Vulnerability from cvelistv5
Published
2016-12-09 00:00
Modified
2024-08-06 02:35
Severity ?
Summary
The kex_input_kexinit function in kex.c in OpenSSH 6.x and 7.x through 7.3 allows remote attackers to cause a denial of service (memory consumption) by sending many duplicate KEXINIT requests. NOTE: a third party reports that "OpenSSH upstream does not consider this as a security issue."
References
cve@mitre.orghttp://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/kex.c.diff?r1=1.126&r2=1.127&f=hIssue Tracking, Vendor Advisory
cve@mitre.orghttp://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/kex.c?rev=1.127&content-type=text/x-cvsweb-markupIssue Tracking, Vendor Advisory
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2016/10/19/3Mailing List, Third Party Advisory
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2016/10/20/1Mailing List, Third Party Advisory
cve@mitre.orghttp://www.securityfocus.com/bid/93776Third Party Advisory, VDB Entry
cve@mitre.orghttp://www.securitytracker.com/id/1037057Third Party Advisory, VDB Entry
cve@mitre.orghttps://bugzilla.redhat.com/show_bug.cgi?id=1384860Issue Tracking
cve@mitre.orghttps://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
cve@mitre.orghttps://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/013_ssh_kexinit.patch.sigPatch, Vendor Advisory
cve@mitre.orghttps://github.com/openssh/openssh-portable/commit/ec165c392ca54317dbe3064a8c200de6531e89adIssue Tracking, Patch, Third Party Advisory
cve@mitre.orghttps://security.FreeBSD.org/advisories/FreeBSD-SA-16:33.openssh.ascThird Party Advisory
cve@mitre.orghttps://security.gentoo.org/glsa/201612-18Third Party Advisory
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20180201-0001/Third Party Advisory
Impacted products
n/an/a
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-06T02:35:01.046Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "93776",
            "tags": [
              "vdb-entry",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/93776"
          },
          {
            "name": "[oss-security] 20161020 Re: Re: CVE Request: OpenSSH: Memory exhaustion issue found in OpenSSH",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2016/10/20/1"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20180201-0001/"
          },
          {
            "name": "[oss-security] 20161019 CVE Request: OpenSSH: Memory exhaustion issue found in OpenSSH",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2016/10/19/3"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/kex.c.diff?r1=1.126\u0026r2=1.127\u0026f=h"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/openssh/openssh-portable/commit/ec165c392ca54317dbe3064a8c200de6531e89ad"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/013_ssh_kexinit.patch.sig"
          },
          {
            "name": "FreeBSD-SA-16:33",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-16:33.openssh.asc"
          },
          {
            "name": "1037057",
            "tags": [
              "vdb-entry",
              "x_transferred"
            ],
            "url": "http://www.securitytracker.com/id/1037057"
          },
          {
            "name": "GLSA-201612-18",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/201612-18"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1384860"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/kex.c?rev=1.127\u0026content-type=text/x-cvsweb-markup"
          },
          {
            "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": "2016-10-10T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "The kex_input_kexinit function in kex.c in OpenSSH 6.x and 7.x through 7.3 allows remote attackers to cause a denial of service (memory consumption) by sending many duplicate KEXINIT requests.  NOTE: a third party reports that \"OpenSSH upstream does not consider this as a security issue.\""
        }
      ],
      "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": "93776",
          "tags": [
            "vdb-entry"
          ],
          "url": "http://www.securityfocus.com/bid/93776"
        },
        {
          "name": "[oss-security] 20161020 Re: Re: CVE Request: OpenSSH: Memory exhaustion issue found in OpenSSH",
          "tags": [
            "mailing-list"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2016/10/20/1"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20180201-0001/"
        },
        {
          "name": "[oss-security] 20161019 CVE Request: OpenSSH: Memory exhaustion issue found in OpenSSH",
          "tags": [
            "mailing-list"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2016/10/19/3"
        },
        {
          "url": "http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/kex.c.diff?r1=1.126\u0026r2=1.127\u0026f=h"
        },
        {
          "url": "https://github.com/openssh/openssh-portable/commit/ec165c392ca54317dbe3064a8c200de6531e89ad"
        },
        {
          "url": "https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/013_ssh_kexinit.patch.sig"
        },
        {
          "name": "FreeBSD-SA-16:33",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-16:33.openssh.asc"
        },
        {
          "name": "1037057",
          "tags": [
            "vdb-entry"
          ],
          "url": "http://www.securitytracker.com/id/1037057"
        },
        {
          "name": "GLSA-201612-18",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.gentoo.org/glsa/201612-18"
        },
        {
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1384860"
        },
        {
          "url": "http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/kex.c?rev=1.127\u0026content-type=text/x-cvsweb-markup"
        },
        {
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
        }
      ],
      "tags": [
        "disputed"
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2016-8858",
    "datePublished": "2016-12-09T00:00:00",
    "dateReserved": "2016-10-19T00:00:00",
    "dateUpdated": "2024-08-06T02:35:01.046Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2016-8858\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2016-12-09T11:59:00.207\",\"lastModified\":\"2024-08-06T03:15:21.673\",\"vulnStatus\":\"Modified\",\"cveTags\":[{\"sourceIdentifier\":\"cve@mitre.org\",\"tags\":[\"disputed\"]}],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The kex_input_kexinit function in kex.c in OpenSSH 6.x and 7.x through 7.3 allows remote attackers to cause a denial of service (memory consumption) by sending many duplicate KEXINIT requests.  NOTE: a third party reports that \\\"OpenSSH upstream does not consider this as a security issue.\\\"\"},{\"lang\":\"es\",\"value\":\"** DISPUTADA ** La funci\u00f3n kex_input_kexinit en kex.c en OpenSSH 6.x y 7.x hasta la versi\u00f3n 7.3 permite a atacantes remotos provocar una denegaci\u00f3n de servicio (consumo de memoria) enviando muchas peticiones duplicadas KEXINIT. NOTA: un tercero reporta que \\\"OpenSSH upstream no considera esto como un problema de seguridad\\\".\"}],\"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\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":7.5,\"baseSeverity\":\"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\",\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"COMPLETE\",\"baseScore\":7.8},\"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-399\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openbsd:openssh:6.8:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"65A8629A-CFAE-4403-BEE7-622912483702\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openbsd:openssh:6.9:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D0607649-62FE-41CB-9444-53CD9C5B67C0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openbsd:openssh:7.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"0B0FB8D5-75CB-4691-AB9F-B4FA46973421\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openbsd:openssh:7.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"67E1B240-BD86-41D3-BAC1-96005CB31DEE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openbsd:openssh:7.2:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"2FC2BA97-6E7A-4AEF-8944-DB3AB8E14762\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openbsd:openssh:7.3:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"F5D3A31E-D785-406D-A8C8-FD122F4C9E38\"}]}]}],\"references\":[{\"url\":\"http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/kex.c.diff?r1=1.126\u0026r2=1.127\u0026f=h\",\"source\":\"cve@mitre.org\",\"tags\":[\"Issue Tracking\",\"Vendor Advisory\"]},{\"url\":\"http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/kex.c?rev=1.127\u0026content-type=text/x-cvsweb-markup\",\"source\":\"cve@mitre.org\",\"tags\":[\"Issue Tracking\",\"Vendor Advisory\"]},{\"url\":\"http://www.openwall.com/lists/oss-security/2016/10/19/3\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://www.openwall.com/lists/oss-security/2016/10/20/1\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://www.securityfocus.com/bid/93776\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"http://www.securitytracker.com/id/1037057\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=1384860\",\"source\":\"cve@mitre.org\",\"tags\":[\"Issue Tracking\"]},{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/013_ssh_kexinit.patch.sig\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://github.com/openssh/openssh-portable/commit/ec165c392ca54317dbe3064a8c200de6531e89ad\",\"source\":\"cve@mitre.org\",\"tags\":[\"Issue Tracking\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://security.FreeBSD.org/advisories/FreeBSD-SA-16:33.openssh.asc\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://security.gentoo.org/glsa/201612-18\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20180201-0001/\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




  • 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.