cve-2019-8460
Vulnerability from cvelistv5
Published
2019-08-26 19:18
Modified
2024-08-04 21:17
Severity ?
Summary
OpenBSD kernel version <= 6.5 can be forced to create long chains of TCP SACK holes that causes very expensive calls to tcp_sack_option() for every incoming SACK packet which can lead to a denial of service.
References
cve@checkpoint.comhttps://ftp.openbsd.org/pub/OpenBSD/patches/6.5/common/006_tcpsack.patch.sigExploit, Vendor Advisory
cve@checkpoint.comhttps://github.com/openbsd/src/commit/ed8fdce754a5d8d14c09e989d8877707bd43906fPatch, Third Party Advisory
cve@checkpoint.comhttps://research.checkpoint.com/tcp-sack-security-issue-in-openbsd-cve-2019-8460/Exploit, Patch, Press/Media Coverage, Third Party Advisory
cve@checkpoint.comhttps://security.netapp.com/advisory/ntap-20190905-0001/Third Party Advisory
cve@checkpoint.comhttps://us-cert.cisa.gov/ics/advisories/icsa-19-253-03
Impacted products
n/aOpenBSD
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T21:17:31.425Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/openbsd/src/commit/ed8fdce754a5d8d14c09e989d8877707bd43906f"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://ftp.openbsd.org/pub/OpenBSD/patches/6.5/common/006_tcpsack.patch.sig"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20190905-0001/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://research.checkpoint.com/tcp-sack-security-issue-in-openbsd-cve-2019-8460/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://us-cert.cisa.gov/ics/advisories/icsa-19-253-03"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "OpenBSD",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "All, including latest - 6.5"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "OpenBSD kernel version \u003c= 6.5 can be forced to create long chains of TCP SACK holes that causes very expensive calls to tcp_sack_option() for every incoming SACK packet which can lead to a denial of service."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1049",
              "description": "CWE-1049",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-08-02T16:16:54",
        "orgId": "897c38be-0345-43cd-b6cf-fe179e0c4f45",
        "shortName": "checkpoint"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/openbsd/src/commit/ed8fdce754a5d8d14c09e989d8877707bd43906f"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://ftp.openbsd.org/pub/OpenBSD/patches/6.5/common/006_tcpsack.patch.sig"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20190905-0001/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://research.checkpoint.com/tcp-sack-security-issue-in-openbsd-cve-2019-8460/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://us-cert.cisa.gov/ics/advisories/icsa-19-253-03"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@checkpoint.com",
          "ID": "CVE-2019-8460",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "OpenBSD",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All, including latest - 6.5"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "OpenBSD kernel version \u003c= 6.5 can be forced to create long chains of TCP SACK holes that causes very expensive calls to tcp_sack_option() for every incoming SACK packet which can lead to a denial of service."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-1049"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/openbsd/src/commit/ed8fdce754a5d8d14c09e989d8877707bd43906f",
              "refsource": "MISC",
              "url": "https://github.com/openbsd/src/commit/ed8fdce754a5d8d14c09e989d8877707bd43906f"
            },
            {
              "name": "https://ftp.openbsd.org/pub/OpenBSD/patches/6.5/common/006_tcpsack.patch.sig",
              "refsource": "MISC",
              "url": "https://ftp.openbsd.org/pub/OpenBSD/patches/6.5/common/006_tcpsack.patch.sig"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20190905-0001/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20190905-0001/"
            },
            {
              "name": "https://research.checkpoint.com/tcp-sack-security-issue-in-openbsd-cve-2019-8460/",
              "refsource": "MISC",
              "url": "https://research.checkpoint.com/tcp-sack-security-issue-in-openbsd-cve-2019-8460/"
            },
            {
              "name": "https://us-cert.cisa.gov/ics/advisories/icsa-19-253-03",
              "refsource": "MISC",
              "url": "https://us-cert.cisa.gov/ics/advisories/icsa-19-253-03"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "897c38be-0345-43cd-b6cf-fe179e0c4f45",
    "assignerShortName": "checkpoint",
    "cveId": "CVE-2019-8460",
    "datePublished": "2019-08-26T19:18:49",
    "dateReserved": "2019-02-18T00:00:00",
    "dateUpdated": "2024-08-04T21:17:31.425Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2019-8460\",\"sourceIdentifier\":\"cve@checkpoint.com\",\"published\":\"2019-08-26T20:15:10.030\",\"lastModified\":\"2021-08-02T17:15:12.697\",\"vulnStatus\":\"Modified\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"OpenBSD kernel version \u003c= 6.5 can be forced to create long chains of TCP SACK holes that causes very expensive calls to tcp_sack_option() for every incoming SACK packet which can lead to a denial of service.\"},{\"lang\":\"es\",\"value\":\"La versi\u00f3n del n\u00facleo de OpenBSD anterior o igual a la versi\u00f3n 6.5 se puede forzar a crear largas cadenas de agujeros TCP SACK que provocan llamadas muy costosas a tcp_sack_option () para cada paquete SACK entrante que puede conducir a una denegaci\u00f3n de servicio.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/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:P\",\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\",\"baseScore\":5.0},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-Other\"}]},{\"source\":\"cve@checkpoint.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-1049\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"6.5\",\"matchCriteriaId\":\"2E0C4316-BB30-4BB0-B57D-61302AC4E93F\"}]}]}],\"references\":[{\"url\":\"https://ftp.openbsd.org/pub/OpenBSD/patches/6.5/common/006_tcpsack.patch.sig\",\"source\":\"cve@checkpoint.com\",\"tags\":[\"Exploit\",\"Vendor Advisory\"]},{\"url\":\"https://github.com/openbsd/src/commit/ed8fdce754a5d8d14c09e989d8877707bd43906f\",\"source\":\"cve@checkpoint.com\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://research.checkpoint.com/tcp-sack-security-issue-in-openbsd-cve-2019-8460/\",\"source\":\"cve@checkpoint.com\",\"tags\":[\"Exploit\",\"Patch\",\"Press/Media Coverage\",\"Third Party Advisory\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20190905-0001/\",\"source\":\"cve@checkpoint.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://us-cert.cisa.gov/ics/advisories/icsa-19-253-03\",\"source\":\"cve@checkpoint.com\"}]}}"
  }
}


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.