Vulnerability-Lookup

GHSA-HPQ2-2FMQ-C95R

Vulnerability from github – Published: 2022-05-13 01:31 – Updated: 2022-05-13 01:31

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.

Severity

5.3 (Medium)


                  
                    CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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{
  "affected": [],
  "aliases": [
    "CVE-2018-6922"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-08-09T18:29:00Z",
    "severity": "MODERATE"
  },
  "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": "GHSA-hpq2-2fmq-c95r",
  "modified": "2022-05-13T01:31:55Z",
  "published": "2022-05-13T01:31:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-6922"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20180815-0002"
    },
    {
      "type": "WEB",
      "url": "https://www.freebsd.org/security/advisories/FreeBSD-SA-18:08.tcp.asc"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/105058"
    },
    {
      "type": "WEB",
      "url": "http://www.securitytracker.com/id/1041425"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2018-6922 (GCVE-0-2018-6922)

Vulnerability from cvelistv5 – Published: 2018-08-09 18:00 – Updated: 2024-09-16 17:53

Summary

Severity

No CVSS data available.

CWE

CWE-400 - Uncontrolled Resource Consumption ('Resource Exhaustion')

Assigner

freebsd mitre root Scorecard

References

5 references

URL	Tags
https://www.freebsd.org/security/advisories/FreeB…	vendor-advisoryx_refsource_FREEBSD
http://www.securitytracker.com/id/1041425	vdb-entryx_refsource_SECTRACK
https://www.oracle.com/technetwork/security-advis…	x_refsource_CONFIRM
http://www.securityfocus.com/bid/105058	vdb-entryx_refsource_BID
https://security.netapp.com/advisory/ntap-2018081…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
FreeBSD	FreeBSD	Affected: All versions prior to 11.2-RELEASE-p1, 11.1-RELEASE-p12, 10.4-RELEASE-p10

Date Public

2018-08-08 00:00

Show details on NVD website

JSON

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          "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": "2018-08-08T00:00:00.000Z",
      "descriptions": [
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          "lang": "en",
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        }
      ],
      "problemTypes": [
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              "type": "CWE"
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      "providerMetadata": {
        "dateUpdated": "2019-01-16T18:57:01.000Z",
        "orgId": "63664ac6-956c-4cba-a5d0-f46076e16109",
        "shortName": "freebsd"
      },
      "references": [
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          "name": "FreeBSD-SA-18:08",
          "tags": [
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          "url": "https://www.freebsd.org/security/advisories/FreeBSD-SA-18:08.tcp.asc"
        },
        {
          "name": "1041425",
          "tags": [
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            "x_refsource_SECTRACK"
          ],
          "url": "http://www.securitytracker.com/id/1041425"
        },
        {
          "tags": [
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          ],
          "url": "https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html"
        },
        {
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          "url": "https://security.netapp.com/advisory/ntap-20180815-0002/"
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      "x_legacyV4Record": {
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          "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"
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            },
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              "refsource": "SECTRACK",
              "url": "http://www.securitytracker.com/id/1041425"
            },
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              "url": "https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html"
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              "refsource": "BID",
              "url": "http://www.securityfocus.com/bid/105058"
            },
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    "dateReserved": "2018-02-12T00:00:00.000Z",
    "dateUpdated": "2024-09-16T17:53:10.816Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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GHSA-HPQ2-2FMQ-C95R

CVE-2018-6922 (GCVE-0-2018-6922)

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Sightings

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