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

CVE-2021-23055 (GCVE-0-2021-23055)

Vulnerability from cvelistv5 – Published: 2022-04-21 18:14 – Updated: 2024-08-03 18:58
VLAI
Summary
On version 2.x before 2.0.3 and 1.x before 1.12.3, the command line restriction that controls snippet use with NGINX Ingress Controller does not apply to Ingress objects. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
n/a NGINX Ingress Controller Affected: 2.x before 2.0.3 and 1.x before 1.12.3
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T18:58:26.295Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://support.f5.com/csp/article/K01051452"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "NGINX Ingress Controller",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "2.x before 2.0.3 and 1.x before 1.12.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "On version 2.x before 2.0.3 and 1.x before 1.12.3, the command line restriction that controls snippet use with NGINX Ingress Controller does not apply to Ingress objects. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-732",
              "description": "CWE-732",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-04-21T18:14:01.000Z",
        "orgId": "9dacffd4-cb11-413f-8451-fbbfd4ddc0ab",
        "shortName": "f5"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://support.f5.com/csp/article/K01051452"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "f5sirt@f5.com",
          "ID": "CVE-2021-23055",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "NGINX Ingress Controller",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "2.x before 2.0.3 and 1.x before 1.12.3"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "On version 2.x before 2.0.3 and 1.x before 1.12.3, the command line restriction that controls snippet use with NGINX Ingress Controller does not apply to Ingress objects. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-732"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://support.f5.com/csp/article/K01051452",
              "refsource": "MISC",
              "url": "https://support.f5.com/csp/article/K01051452"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9dacffd4-cb11-413f-8451-fbbfd4ddc0ab",
    "assignerShortName": "f5",
    "cveId": "CVE-2021-23055",
    "datePublished": "2022-04-21T18:14:01.000Z",
    "dateReserved": "2021-01-06T00:00:00.000Z",
    "dateUpdated": "2024-08-03T18:58:26.295Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-23055",
      "date": "2026-09-18",
      "epss": "0.00769",
      "percentile": "0.54041"
    },
    "fkie_nvd": {
      "configurations": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:f5:nginx_ingress_controller:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "94637206-6021-4054-87E4-7B4A75E19763",
                  "versionEndExcluding": "1.12.3",
                  "versionStartIncluding": "1.0.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:f5:nginx_ingress_controller:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "AB9E46CE-6A0D-4F16-B06C-0843806A7D44",
                  "versionEndExcluding": "2.0.3",
                  "versionStartIncluding": "2.0.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "On version 2.x before 2.0.3 and 1.x before 1.12.3, the command line restriction that controls snippet use with NGINX Ingress Controller does not apply to Ingress objects. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated."
        },
        {
          "lang": "es",
          "value": "En versiones 2.x anteriores a 2.0.3 y en la versiones 1.x anteriores a 1.12.3, la restricci\u00f3n de la l\u00ednea de comandos que controla el uso de fragmentos con NGINX Ingress Controller no es aplicada a los objetos Ingress. Nota: No son evaluadas las versiones de software que han alcanzado el Fin del Soporte T\u00e9cnico (EoTS)"
        }
      ],
      "id": "CVE-2021-23055",
      "lastModified": "2024-11-21T05:51:13.963",
      "metrics": {
        "cvssMetricV2": [
          {
            "acInsufInfo": false,
            "baseSeverity": "MEDIUM",
            "cvssData": {
              "accessComplexity": "LOW",
              "accessVector": "NETWORK",
              "authentication": "SINGLE",
              "availabilityImpact": "NONE",
              "baseScore": 4.0,
              "confidentialityImpact": "PARTIAL",
              "integrityImpact": "NONE",
              "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
              "version": "2.0"
            },
            "exploitabilityScore": 8.0,
            "impactScore": 2.9,
            "obtainAllPrivilege": false,
            "obtainOtherPrivilege": false,
            "obtainUserPrivilege": false,
            "source": "nvd@nist.gov",
            "type": "Primary",
            "userInteractionRequired": false
          }
        ],
        "cvssMetricV31": [
          {
            "cvssData": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 6.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
              "version": "3.1"
            },
            "exploitabilityScore": 2.8,
            "impactScore": 3.6,
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      },
      "published": "2022-04-21T19:15:08.053",
      "references": [
        {
          "source": "f5sirt@f5.com",
          "tags": [
            "Mitigation",
            "Vendor Advisory"
          ],
          "url": "https://support.f5.com/csp/article/K01051452"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Mitigation",
            "Vendor Advisory"
          ],
          "url": "https://support.f5.com/csp/article/K01051452"
        }
      ],
      "sourceIdentifier": "f5sirt@f5.com",
      "vulnStatus": "Modified",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-732"
            }
          ],
          "source": "f5sirt@f5.com",
          "type": "Secondary"
        },
        {
          "description": [
            {
              "lang": "en",
              "value": "NVD-CWE-Other"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:f5:nginx_ingress_controller:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "94637206-6021-4054-87E4-7B4A75E19763",
                    "versionEndExcluding": "1.12.3",
                    "versionStartIncluding": "1.0.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:f5:nginx_ingress_controller:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "AB9E46CE-6A0D-4F16-B06C-0843806A7D44",
                    "versionEndExcluding": "2.0.3",
                    "versionStartIncluding": "2.0.0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "On version 2.x before 2.0.3 and 1.x before 1.12.3, the command line restriction that controls snippet use with NGINX Ingress Controller does not apply to Ingress objects. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated."
          },
          {
            "lang": "es",
            "value": "En versiones 2.x anteriores a 2.0.3 y en la versiones 1.x anteriores a 1.12.3, la restricci\u00f3n de la l\u00ednea de comandos que controla el uso de fragmentos con NGINX Ingress Controller no es aplicada a los objetos Ingress. Nota: No son evaluadas las versiones de software que han alcanzado el Fin del Soporte T\u00e9cnico (EoTS)"
          }
        ],
        "id": "CVE-2021-23055",
        "lastModified": "2024-11-21T05:51:13.963",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "SINGLE",
                "availabilityImpact": "NONE",
                "baseScore": 4.0,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "NONE",
                "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
                "version": "2.0"
              },
              "exploitabilityScore": 8.0,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 6.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2022-04-21T19:15:08.053",
        "references": [
          {
            "source": "f5sirt@f5.com",
            "tags": [
              "Mitigation",
              "Vendor Advisory"
            ],
            "url": "https://support.f5.com/csp/article/K01051452"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mitigation",
              "Vendor Advisory"
            ],
            "url": "https://support.f5.com/csp/article/K01051452"
          }
        ],
        "sourceIdentifier": "f5sirt@f5.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-732"
              }
            ],
            "source": "f5sirt@f5.com",
            "type": "Secondary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-Other"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2026-03-27T14:47:17+00:00",
      "cve": "CVE-2021-23055",
      "id": "CVE-2021-23055",
      "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-2021-23055",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-23055.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2025-02-17T05:44:06Z",
      "cve": "CVE-2021-23055",
      "id": "CVE-2021-23055",
      "initial_release_date": "2023-02-15T03:45:43Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-23055",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-23055.json",
      "version": "5"
    }
  }
}



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.