GSD-2019-8460

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
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.
Aliases
Aliases
CVE-2019-8460
To clipboard 

{
  "GSD": {
    "alias": "CVE-2019-8460",
    "description": "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.",
    "id": "GSD-2019-8460"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2019-8460"
      ],
      "details": "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.",
      "id": "GSD-2019-8460",
      "modified": "2023-12-13T01:23:48.009038Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "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"
                        }
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                    }
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            }
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          }
        ]
      },
      "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"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "6.5",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
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          "ID": "CVE-2019-8460"
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            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
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                  "value": "NVD-CWE-Other"
                }
              ]
            }
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        },
        "references": {
          "reference_data": [
            {
              "name": "https://ftp.openbsd.org/pub/OpenBSD/patches/6.5/common/006_tcpsack.patch.sig",
              "refsource": "MISC",
              "tags": [
                "Exploit",
                "Vendor Advisory"
              ],
              "url": "https://ftp.openbsd.org/pub/OpenBSD/patches/6.5/common/006_tcpsack.patch.sig"
            },
            {
              "name": "https://github.com/openbsd/src/commit/ed8fdce754a5d8d14c09e989d8877707bd43906f",
              "refsource": "MISC",
              "tags": [
                "Patch",
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              ],
              "url": "https://github.com/openbsd/src/commit/ed8fdce754a5d8d14c09e989d8877707bd43906f"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20190905-0001/",
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              "tags": [
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              "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",
              "tags": [
                "Exploit",
                "Patch",
                "Press/Media Coverage",
                "Third Party Advisory"
              ],
              "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",
              "tags": [],
              "url": "https://us-cert.cisa.gov/ics/advisories/icsa-19-253-03"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2021-08-02T17:15Z",
      "publishedDate": "2019-08-26T20:15Z"
    }
  }
}



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