GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2021-23030 (GCVE-0-2021-23030)

Vulnerability from cvelistv5 – Published: 2021-09-14 20:43 – Updated: 2024-08-03 18:58
VLAI
Summary
On BIG-IP Advanced WAF and BIG-IP ASM version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.3, 13.1.x before 13.1.4.1, and all versions of 12.1.x, when a WebSocket profile is configured on a virtual server, undisclosed requests can cause bd to terminate. 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
Assigner
References
Impacted products
Vendor Product Version CPE status
n/a BIG-IP Advanced WAF and BIG-IP ASM Affected: 16.0.x before 16.0.1.2, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.3, 13.1.x before 13.1.4.1, and all versions of 12.1.x
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T18:58:26.265Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://support.f5.com/csp/article/K42051445"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "BIG-IP Advanced WAF and BIG-IP ASM",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "16.0.x before 16.0.1.2, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.3, 13.1.x before 13.1.4.1, and all versions of 12.1.x"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "On BIG-IP Advanced WAF and BIG-IP ASM version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.3, 13.1.x before 13.1.4.1, and all versions of 12.1.x, when a WebSocket profile is configured on a virtual server, undisclosed requests can cause bd to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-09-14T20:43:01.000Z",
        "orgId": "9dacffd4-cb11-413f-8451-fbbfd4ddc0ab",
        "shortName": "f5"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://support.f5.com/csp/article/K42051445"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "f5sirt@f5.com",
          "ID": "CVE-2021-23030",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "BIG-IP Advanced WAF and BIG-IP ASM",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "16.0.x before 16.0.1.2, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.3, 13.1.x before 13.1.4.1, and all versions of 12.1.x"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "On BIG-IP Advanced WAF and BIG-IP ASM version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.3, 13.1.x before 13.1.4.1, and all versions of 12.1.x, when a WebSocket profile is configured on a virtual server, undisclosed requests can cause bd to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-20"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://support.f5.com/csp/article/K42051445",
              "refsource": "MISC",
              "url": "https://support.f5.com/csp/article/K42051445"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9dacffd4-cb11-413f-8451-fbbfd4ddc0ab",
    "assignerShortName": "f5",
    "cveId": "CVE-2021-23030",
    "datePublished": "2021-09-14T20:43:01.000Z",
    "dateReserved": "2021-01-06T00:00:00.000Z",
    "dateUpdated": "2024-08-03T18:58:26.265Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-23030",
      "date": "2026-09-18",
      "epss": "0.00961",
      "percentile": "0.60022"
    },
    "fkie_nvd": {
      "configurations": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "DB47609C-87B6-4471-A5BD-CD942598BCB9",
                  "versionEndIncluding": "12.1.6",
                  "versionStartIncluding": "12.1.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "D4C23715-2E2A-4FC6-8303-007AA2355779",
                  "versionEndIncluding": "13.1.4",
                  "versionStartIncluding": "13.1.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "D2A1BB14-BEB5-43DD-878D-83E51FBFD4E0",
                  "versionEndIncluding": "14.1.4",
                  "versionStartIncluding": "14.1.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "56D19CAF-676D-4029-91C4-80140C4C4416",
                  "versionEndIncluding": "15.1.3",
                  "versionStartIncluding": "15.1.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "2D3877DD-4285-4EA1-9E76-A7EF48B0B1B5",
                  "versionEndIncluding": "16.0.1.1",
                  "versionStartIncluding": "16.0.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "1849279E-9FB1-4D6A-8386-337F7DF151DF",
                  "versionEndIncluding": "12.1.6",
                  "versionStartIncluding": "12.1.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "D17DCE22-99F8-422C-A414-86CFA78BA425",
                  "versionEndIncluding": "13.1.4",
                  "versionStartIncluding": "13.1.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "15EB0439-9C16-45C2-895D-44D6ED1A028A",
                  "versionEndIncluding": "14.1.4",
                  "versionStartIncluding": "14.1.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "2408EED7-CFDF-414C-82DB-FA9541DE2138",
                  "versionEndIncluding": "15.1.3",
                  "versionStartIncluding": "15.1.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "C19CC5B0-63A3-454E-B0F4-9F4A6D176567",
                  "versionEndIncluding": "16.0.1.1",
                  "versionStartIncluding": "16.0.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "On BIG-IP Advanced WAF and BIG-IP ASM version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.3, 13.1.x before 13.1.4.1, and all versions of 12.1.x, when a WebSocket profile is configured on a virtual server, undisclosed requests can cause bd to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated."
        },
        {
          "lang": "es",
          "value": "En BIG-IP Advanced WAF y BIG-IP ASM versiones 16.0.x anteriores a 16.0.1.2, 15.1.x anteriores a 15.1.3.1, 14.1.x anteriores a 14.1.4.3, 13.1.x anteriores a 13.1.4.1, y todas las versiones de 12.1.x, cuando se configura un perfil WebSocket en un servidor virtual, las peticiones no divulgadas pueden causar la terminaci\u00f3n de bd. Nota: Las versiones de software que han alcanzado End of Technical Support (EoTS) no son evaluadas"
        }
      ],
      "id": "CVE-2021-23030",
      "lastModified": "2024-11-21T05:51:11.013",
      "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": "2021-09-14T21:15:07.723",
      "references": [
        {
          "source": "f5sirt@f5.com",
          "tags": [
            "Mitigation",
            "Vendor Advisory"
          ],
          "url": "https://support.f5.com/csp/article/K42051445"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Mitigation",
            "Vendor Advisory"
          ],
          "url": "https://support.f5.com/csp/article/K42051445"
        }
      ],
      "sourceIdentifier": "f5sirt@f5.com",
      "vulnStatus": "Modified",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-20"
            }
          ],
          "source": "f5sirt@f5.com",
          "type": "Secondary"
        },
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-20"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "DB47609C-87B6-4471-A5BD-CD942598BCB9",
                    "versionEndIncluding": "12.1.6",
                    "versionStartIncluding": "12.1.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "D4C23715-2E2A-4FC6-8303-007AA2355779",
                    "versionEndIncluding": "13.1.4",
                    "versionStartIncluding": "13.1.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "D2A1BB14-BEB5-43DD-878D-83E51FBFD4E0",
                    "versionEndIncluding": "14.1.4",
                    "versionStartIncluding": "14.1.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "56D19CAF-676D-4029-91C4-80140C4C4416",
                    "versionEndIncluding": "15.1.3",
                    "versionStartIncluding": "15.1.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "2D3877DD-4285-4EA1-9E76-A7EF48B0B1B5",
                    "versionEndIncluding": "16.0.1.1",
                    "versionStartIncluding": "16.0.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "1849279E-9FB1-4D6A-8386-337F7DF151DF",
                    "versionEndIncluding": "12.1.6",
                    "versionStartIncluding": "12.1.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "D17DCE22-99F8-422C-A414-86CFA78BA425",
                    "versionEndIncluding": "13.1.4",
                    "versionStartIncluding": "13.1.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "15EB0439-9C16-45C2-895D-44D6ED1A028A",
                    "versionEndIncluding": "14.1.4",
                    "versionStartIncluding": "14.1.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "2408EED7-CFDF-414C-82DB-FA9541DE2138",
                    "versionEndIncluding": "15.1.3",
                    "versionStartIncluding": "15.1.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "C19CC5B0-63A3-454E-B0F4-9F4A6D176567",
                    "versionEndIncluding": "16.0.1.1",
                    "versionStartIncluding": "16.0.0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "On BIG-IP Advanced WAF and BIG-IP ASM version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.3, 13.1.x before 13.1.4.1, and all versions of 12.1.x, when a WebSocket profile is configured on a virtual server, undisclosed requests can cause bd to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated."
          },
          {
            "lang": "es",
            "value": "En BIG-IP Advanced WAF y BIG-IP ASM versiones 16.0.x anteriores a 16.0.1.2, 15.1.x anteriores a 15.1.3.1, 14.1.x anteriores a 14.1.4.3, 13.1.x anteriores a 13.1.4.1, y todas las versiones de 12.1.x, cuando se configura un perfil WebSocket en un servidor virtual, las peticiones no divulgadas pueden causar la terminaci\u00f3n de bd. Nota: Las versiones de software que han alcanzado End of Technical Support (EoTS) no son evaluadas"
          }
        ],
        "id": "CVE-2021-23030",
        "lastModified": "2024-11-21T05:51:11.013",
        "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": "2021-09-14T21:15:07.723",
        "references": [
          {
            "source": "f5sirt@f5.com",
            "tags": [
              "Mitigation",
              "Vendor Advisory"
            ],
            "url": "https://support.f5.com/csp/article/K42051445"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mitigation",
              "Vendor Advisory"
            ],
            "url": "https://support.f5.com/csp/article/K42051445"
          }
        ],
        "sourceIdentifier": "f5sirt@f5.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-20"
              }
            ],
            "source": "f5sirt@f5.com",
            "type": "Secondary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-20"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2026-03-27T14:47:26+00:00",
      "cve": "CVE-2021-23030",
      "id": "CVE-2021-23030",
      "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-2021-23030",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-23030.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.


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.