CVE-2021-23009 (GCVE-0-2021-23009)

Vulnerability from cvelistv5 – Published: 2021-05-10 14:18 – Updated: 2024-08-03 18:58
VLAI
Summary
On BIG-IP version 16.0.x before 16.0.1.1 and 15.1.x before 15.1.3, malformed HTTP/2 requests may cause an infinite loop which causes a Denial of Service for Data Plane traffic. TMM takes the configured HA action when the TMM process is aborted. There is no control plane exposure, this is a data plane issue only. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • DoS
Assigner
References
Impacted products
Vendor Product Version CPE status
n/a BIG-IP Affected: 16.0.x before 16.0.1.1 and 15.1.x before 15.1.3
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                    "vulnerable": true
                  },
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                    "vulnerable": true
                  },
                  {
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                    "versionStartIncluding": "16.0.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E2E2832C-0C5D-4051-A85B-162C5BF11DEE",
                    "versionEndExcluding": "15.1.3",
                    "versionStartIncluding": "15.1.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "87CA1319-92D4-4C2F-B5D4-A2E86F538007",
                    "versionEndExcluding": "16.0.1.1",
                    "versionStartIncluding": "16.0.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "247A56A6-5486-49C4-88B1-4251337044AB",
                    "versionEndExcluding": "15.1.3",
                    "versionStartIncluding": "15.1.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*",
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                    "versionEndExcluding": "16.0.1.1",
                    "versionStartIncluding": "16.0.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "9E599573-DAE5-4481-9BA0-7796D7101E67",
                    "versionEndExcluding": "15.1.3",
                    "versionStartIncluding": "15.1.0",
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                  },
                  {
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                    "versionStartIncluding": "16.0.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "D67E4394-E1CC-4492-95E7-DCDA13049517",
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                    "versionStartIncluding": "15.1.0",
                    "vulnerable": true
                  },
                  {
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                    "versionStartIncluding": "16.0.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "1B6F6F41-B775-4A79-8284-C7BE0DA49DAA",
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                    "vulnerable": true
                  },
                  {
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                    "matchCriteriaId": "B0901863-B55A-4C97-B9AC-B537D242D2BF",
                    "versionEndExcluding": "16.0.1.1",
                    "versionStartIncluding": "16.0.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "50D58AEB-BB36-45A9-99D7-DC028F900707",
                    "versionEndExcluding": "15.1.3",
                    "versionStartIncluding": "15.1.0",
                    "vulnerable": true
                  },
                  {
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                    "matchCriteriaId": "85065C6E-71F2-42B8-A169-51174987B8AF",
                    "versionEndExcluding": "16.0.1.1",
                    "versionStartIncluding": "16.0.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:*",
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                    "versionStartIncluding": "15.1.0",
                    "vulnerable": true
                  },
                  {
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                    "versionEndExcluding": "16.0.1.1",
                    "versionStartIncluding": "16.0.0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "On BIG-IP version 16.0.x before 16.0.1.1 and 15.1.x before 15.1.3, malformed HTTP/2 requests may cause an infinite loop which causes a Denial of Service for Data Plane traffic. TMM takes the configured HA action when the TMM process is aborted. There is no control plane exposure, this is a data plane issue only. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated."
          },
          {
            "lang": "es",
            "value": "En BIG-IP versi\u00f3n 16.0.x anterior a 16.0.1.1 y 15.1.x anterior a 15.1.3, las peticiones HTTP/2 malformadas pueden causar un bucle infinito que provoca una Denegaci\u00f3n de Servicio para el Data Plane traffic.\u0026#xa0;TMM toma la acci\u00f3n HA configurada cuando se cancela el proceso de TMM.\u0026#xa0;No existe exposici\u00f3n del plano de control, esto es solo un problema del plano de datos.\u0026#xa0;Nota: No se eval\u00faan las versiones de software que hayan alcanzado el End of Technical Support (EoTS)"
          }
        ],
        "id": "CVE-2021-23009",
        "lastModified": "2024-11-21T05:51:08.610",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "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,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "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,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2021-05-10T15:15:07.360",
        "references": [
          {
            "source": "f5sirt@f5.com",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://support.f5.com/csp/article/K90603426"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://support.f5.com/csp/article/K90603426"
          }
        ],
        "sourceIdentifier": "f5sirt@f5.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-835"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2026-03-27T14:47:34+00:00",
      "cve": "CVE-2021-23009",
      "id": "CVE-2021-23009",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "CVE-2021-23009",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-23009.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.



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.