gsd-2018-6922
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
One of the data structures that holds TCP segments in all versions of FreeBSD prior to 11.2-RELEASE-p1, 11.1-RELEASE-p12, and 10.4-RELEASE-p10 uses an inefficient algorithm to reassemble the data. This causes the CPU time spent on segment processing to grow linearly with the number of segments in the reassembly queue. An attacker who has the ability to send TCP traffic to a victim system can degrade the victim system's network performance and/or consume excessive CPU by exploiting the inefficiency of TCP reassembly handling, with relatively small bandwidth cost.
Aliases
Aliases



{
  "GSD": {
    "alias": "CVE-2018-6922",
    "description": "One of the data structures that holds TCP segments in all versions of FreeBSD prior to 11.2-RELEASE-p1, 11.1-RELEASE-p12, and 10.4-RELEASE-p10 uses an inefficient algorithm to reassemble the data. This causes the CPU time spent on segment processing to grow linearly with the number of segments in the reassembly queue. An attacker who has the ability to send TCP traffic to a victim system can degrade the victim system\u0027s network performance and/or consume excessive CPU by exploiting the inefficiency of TCP reassembly handling, with relatively small bandwidth cost.",
    "id": "GSD-2018-6922"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2018-6922"
      ],
      "details": "One of the data structures that holds TCP segments in all versions of FreeBSD prior to 11.2-RELEASE-p1, 11.1-RELEASE-p12, and 10.4-RELEASE-p10 uses an inefficient algorithm to reassemble the data. This causes the CPU time spent on segment processing to grow linearly with the number of segments in the reassembly queue. An attacker who has the ability to send TCP traffic to a victim system can degrade the victim system\u0027s network performance and/or consume excessive CPU by exploiting the inefficiency of TCP reassembly handling, with relatively small bandwidth cost.",
      "id": "GSD-2018-6922",
      "modified": "2023-12-13T01:22:35.368667Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "secteam@freebsd.org",
        "DATE_PUBLIC": "2018-08-08T00:00:00",
        "ID": "CVE-2018-6922",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "FreeBSD",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "All versions prior to 11.2-RELEASE-p1, 11.1-RELEASE-p12, 10.4-RELEASE-p10"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "FreeBSD"
            }
          ]
        }
      },
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      "data_version": "4.0",
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          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-400: Uncontrolled Resource Consumption (\u0027Resource Exhaustion\u0027)"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "FreeBSD-SA-18:08",
            "refsource": "FREEBSD",
            "url": "https://www.freebsd.org/security/advisories/FreeBSD-SA-18:08.tcp.asc"
          },
          {
            "name": "1041425",
            "refsource": "SECTRACK",
            "url": "http://www.securitytracker.com/id/1041425"
          },
          {
            "name": "https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html",
            "refsource": "CONFIRM",
            "url": "https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html"
          },
          {
            "name": "105058",
            "refsource": "BID",
            "url": "http://www.securityfocus.com/bid/105058"
          },
          {
            "name": "https://security.netapp.com/advisory/ntap-20180815-0002/",
            "refsource": "CONFIRM",
            "url": "https://security.netapp.com/advisory/ntap-20180815-0002/"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:freebsd:freebsd:10.4:p7:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:freebsd:freebsd:10.4:p9:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
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                "cpe_name": [],
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              },
              {
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                "cpe_name": [],
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              {
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              },
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                "cpe_name": [],
                "vulnerable": true
              },
              {
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                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:freebsd:freebsd:11.1:-:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:freebsd:freebsd:11.1:p6:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:freebsd:freebsd:11.1:p9:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "secteam@freebsd.org",
          "ID": "CVE-2018-6922"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "One of the data structures that holds TCP segments in all versions of FreeBSD prior to 11.2-RELEASE-p1, 11.1-RELEASE-p12, and 10.4-RELEASE-p10 uses an inefficient algorithm to reassemble the data. This causes the CPU time spent on segment processing to grow linearly with the number of segments in the reassembly queue. An attacker who has the ability to send TCP traffic to a victim system can degrade the victim system\u0027s network performance and/or consume excessive CPU by exploiting the inefficiency of TCP reassembly handling, with relatively small bandwidth cost."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-400"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "FreeBSD-SA-18:08",
              "refsource": "FREEBSD",
              "tags": [
                "Patch",
                "Vendor Advisory"
              ],
              "url": "https://www.freebsd.org/security/advisories/FreeBSD-SA-18:08.tcp.asc"
            },
            {
              "name": "1041425",
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            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20180815-0002/",
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                "Third Party Advisory"
              ],
              "url": "https://security.netapp.com/advisory/ntap-20180815-0002/"
            },
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              "name": "https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html",
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              ],
              "url": "https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": true,
          "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": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.0"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 1.4
        }
      },
      "lastModifiedDate": "2019-10-09T23:42Z",
      "publishedDate": "2018-08-09T18:29Z"
    }
  }
}


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