cvelistv5 - CVE-2018-6922

CVE-2018-6922

Vulnerability from cvelistv5

Published

2018-08-09 18:00

Modified

2024-09-16 17:53

Severity ?

Summary

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.

References

URL	Tags
secteam@freebsd.org	http://www.securityfocus.com/bid/105058	Third Party Advisory, VDB Entry
secteam@freebsd.org	http://www.securitytracker.com/id/1041425	Third Party Advisory, VDB Entry
secteam@freebsd.org	https://security.netapp.com/advisory/ntap-20180815-0002/	Third Party Advisory
secteam@freebsd.org	https://www.freebsd.org/security/advisories/FreeBSD-SA-18:08.tcp.asc	Patch, Vendor Advisory
secteam@freebsd.org	https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html	Patch

Impacted products

▼	Vendor	Product
	FreeBSD	FreeBSD

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T06:17:17.137Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "FreeBSD-SA-18:08",
            "tags": [
              "vendor-advisory",
              "x_refsource_FREEBSD",
              "x_transferred"
            ],
            "url": "https://www.freebsd.org/security/advisories/FreeBSD-SA-18:08.tcp.asc"
          },
          {
            "name": "1041425",
            "tags": [
              "vdb-entry",
              "x_refsource_SECTRACK",
              "x_transferred"
            ],
            "url": "http://www.securitytracker.com/id/1041425"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html"
          },
          {
            "name": "105058",
            "tags": [
              "vdb-entry",
              "x_refsource_BID",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/105058"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20180815-0002/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "FreeBSD",
          "vendor": "FreeBSD",
          "versions": [
            {
              "status": "affected",
              "version": "All versions prior to 11.2-RELEASE-p1, 11.1-RELEASE-p12, 10.4-RELEASE-p10"
            }
          ]
        }
      ],
      "datePublic": "2018-08-08T00:00:00",
      "descriptions": [
        {
          "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."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-400",
              "description": "CWE-400: Uncontrolled Resource Consumption (\u0027Resource Exhaustion\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2019-01-16T18:57:01",
        "orgId": "63664ac6-956c-4cba-a5d0-f46076e16109",
        "shortName": "freebsd"
      },
      "references": [
        {
          "name": "FreeBSD-SA-18:08",
          "tags": [
            "vendor-advisory",
            "x_refsource_FREEBSD"
          ],
          "url": "https://www.freebsd.org/security/advisories/FreeBSD-SA-18:08.tcp.asc"
        },
        {
          "name": "1041425",
          "tags": [
            "vdb-entry",
            "x_refsource_SECTRACK"
          ],
          "url": "http://www.securitytracker.com/id/1041425"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html"
        },
        {
          "name": "105058",
          "tags": [
            "vdb-entry",
            "x_refsource_BID"
          ],
          "url": "http://www.securityfocus.com/bid/105058"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20180815-0002/"
        }
      ],
      "x_legacyV4Record": {
        "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"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "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": "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/"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "63664ac6-956c-4cba-a5d0-f46076e16109",
    "assignerShortName": "freebsd",
    "cveId": "CVE-2018-6922",
    "datePublished": "2018-08-09T18:00:00Z",
    "dateReserved": "2018-02-12T00:00:00",
    "dateUpdated": "2024-09-16T17:53:10.816Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2018-6922\",\"sourceIdentifier\":\"secteam@freebsd.org\",\"published\":\"2018-08-09T18:29:00.277\",\"lastModified\":\"2019-10-09T23:42:06.470\",\"vulnStatus\":\"Modified\",\"descriptions\":[{\"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.\"},{\"lang\":\"es\",\"value\":\"Una de las estructuras de datos que contienen segmentos TCP en todas las versiones de FreeBSD anteriores a 11.2-RELEASE-p1, 11.1-RELEASE-p12 y 10.4-RELEASE-p10 emplea un algoritmo ineficiente para volver a ensamblar los datos. Esto provoca que el tiempo de CPU que se gasta en el procesamiento de segmentos crezca linealmente con el n\u00famero de segmentos en la cola de reensamblado. Un atacante que pueda enviar tr\u00e1fico TCP en un sistema objetivo puede degradar el rendimiento de la red del sistema v\u00edctima y/o consumir demasiada CPU explotando la ineficiencia del manejo del reensamblado TCP, con un coste de ancho de banda relativamente peque\u00f1o.\"}],\"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:L\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"LOW\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}],\"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\":true,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-400\"}]},{\"source\":\"secteam@freebsd.org\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-400\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:freebsd:freebsd:10.4:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"AD0AD3C8-18BF-45D5-B9DD-A6D8E6E72C91\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:freebsd:freebsd:10.4:p1:*:*:*:*:*:*\",\"matchCriteriaId\":\"24B79E85-7BBE-4AB7-B3F7-E08C4521ECF0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:freebsd:freebsd:10.4:p3:*:*:*:*:*:*\",\"matchCriteriaId\":\"0D4F5DE9-732B-4CA6-A7EB-7C703BA96538\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:freebsd:freebsd:10.4:p4:*:*:*:*:*:*\",\"matchCriteriaId\":\"261BF7F7-BF72-43D4-9634-083B07CD3D37\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:freebsd:freebsd:10.4:p5:*:*:*:*:*:*\",\"matchCriteriaId\":\"841F9F9F-068E-4E70-9376-B28A0906B565\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:freebsd:freebsd:10.4:p6:*:*:*:*:*:*\",\"matchCriteriaId\":\"848A3B55-EE8E-4590-B09E-B113C175F604\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:freebsd:freebsd:10.4:p7:*:*:*:*:*:*\",\"matchCriteriaId\":\"ABAFFF71-1E33-4270-8418-41A11CE1B5C9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:freebsd:freebsd:10.4:p8:*:*:*:*:*:*\",\"matchCriteriaId\":\"D633AE8C-DF0F-42AE-882E-D1FEF75F77A5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:freebsd:freebsd:10.4:p9:*:*:*:*:*:*\",\"matchCriteriaId\":\"F638F41E-9B86-4438-99DC-315FC7C0DDB7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:freebsd:freebsd:11.1:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"7874C990-BCD8-4DC1-8971-E32E6CF1BC76\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:freebsd:freebsd:11.1:p1:*:*:*:*:*:*\",\"matchCriteriaId\":\"A9ED6966-F883-40D3-921F-B356E9F2042D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:freebsd:freebsd:11.1:p11:*:*:*:*:*:*\",\"matchCriteriaId\":\"D431F713-67BF-47C7-BB82-469EBC4B7EF8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:freebsd:freebsd:11.1:p2:*:*:*:*:*:*\",\"matchCriteriaId\":\"0829827E-1E15-4994-B335-C2E85B36AB1B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:freebsd:freebsd:11.1:p4:*:*:*:*:*:*\",\"matchCriteriaId\":\"75DC11C1-E19D-4154-9BC6-48EA5C5FC64A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:freebsd:freebsd:11.1:p5:*:*:*:*:*:*\",\"matchCriteriaId\":\"77DBFF56-4A4D-4C4C-805B-9E01FD7F6CF3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:freebsd:freebsd:11.1:p6:*:*:*:*:*:*\",\"matchCriteriaId\":\"50F75AA7-958D-468A-BCCB-FB599A6971B0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:freebsd:freebsd:11.1:p7:*:*:*:*:*:*\",\"matchCriteriaId\":\"BDF64291-7335-4D9E-9B06-7CBFBE813A1C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:freebsd:freebsd:11.1:p9:*:*:*:*:*:*\",\"matchCriteriaId\":\"C8F8288A-97E6-4D63-9F4B-D4854BBCED88\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:freebsd:freebsd:11.2:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"3ACD1D8D-B3BC-4E99-B846-90A4071DB87B\"}]}]}],\"references\":[{\"url\":\"http://www.securityfocus.com/bid/105058\",\"source\":\"secteam@freebsd.org\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"http://www.securitytracker.com/id/1041425\",\"source\":\"secteam@freebsd.org\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20180815-0002/\",\"source\":\"secteam@freebsd.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.freebsd.org/security/advisories/FreeBSD-SA-18:08.tcp.asc\",\"source\":\"secteam@freebsd.org\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html\",\"source\":\"secteam@freebsd.org\",\"tags\":[\"Patch\"]}]}}"
  }
}

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.

Action not permitted

CVE-2018-6922

Vulnerability from cvelistv5

cisco-sa-20180824-linux-tcp

Vulnerability from csaf_cisco

gsd-2018-6922

Vulnerability from gsd

ghsa-hpq2-2fmq-c95r

Vulnerability from github

Tags

Sightings

Nomenclature