CVE-2021-23017 (GCVE-0-2021-23017)

Vulnerability from cvelistv5 – Published: 2021-06-01 12:28 – Updated: 2024-08-03 18:58
VLAI
Summary
A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact.
Severity
7.7 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
n/a Nginx Web Server, Nginx Plus Affected: Nginx Web Server versions 0.6.18 thru 1.20.0 before 1.20.1, Nginx plus versions R13 thru R23 before R23 P1. Nginx plus version R24 before R24 P1
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T18:58:26.413Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://support.f5.com/csp/article/K12331123%2C"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "http://mailman.nginx.org/pipermail/nginx-announce/2021/000300.html"
          },
          {
            "name": "[apisix-notifications] 20210607 [GitHub] [apisix-website] Serendipity96 opened a new pull request #362: feat: add new blog",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.apache.org/thread.html/r6fc5c57b38e93e36213e9a18c8a4e5dbd5ced1c7e57f08a1735975ba%40%3Cnotifications.apisix.apache.org%3E"
          },
          {
            "name": "[apisix-notifications] 20210608 [GitHub] [apisix-website] liuxiran commented on a change in pull request #362: docs: added \"Apache APISIX not affected by NGINX CVE-2021-23017\"",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.apache.org/thread.html/r37e6b2165f7c910d8e15fd54f4697857619ad2625f56583802004009%40%3Cnotifications.apisix.apache.org%3E"
          },
          {
            "name": "[apisix-notifications] 20210608 [GitHub] [apisix-website] netlify[bot] edited a comment on pull request #362: docs: added \"Apache APISIX not affected by NGINX CVE-2021-23017\"",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.apache.org/thread.html/rf318aeeb4d7a3a312734780b47de83cefb7e6995da0b2cae5c28675c%40%3Cnotifications.apisix.apache.org%3E"
          },
          {
            "name": "[apisix-notifications] 20210608 [GitHub] [apisix-website] liuxiran merged pull request #362: docs: added \"Apache APISIX not affected by NGINX CVE-2021-23017\"",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.apache.org/thread.html/r4d4966221ca399ce948ef34884652265729d7d9ef8179c78d7f17e7f%40%3Cnotifications.apisix.apache.org%3E"
          },
          {
            "name": "[apisix-notifications] 20210608 [apisix-website] branch master updated: docs: added \"Apache APISIX not affected by NGINX CVE-2021-23017\" (#362)",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.apache.org/thread.html/rf232eecd47fdc44520192810560303073cefd684b321f85e311bad31%40%3Cnotifications.apisix.apache.org%3E"
          },
          {
            "name": "FEDORA-2021-b37cffac0d",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GNKOP2JR5L7KCIZTJRZDCUPJTUONMC5I/"
          },
          {
            "name": "FEDORA-2021-393d698493",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7SFVYHC7OXTEO4SMBWXDVK6E5IMEYMEE/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20210708-0006/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "http://packetstormsecurity.com/files/167720/Nginx-1.20.0-Denial-Of-Service.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Nginx Web Server, Nginx Plus",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "Nginx Web Server versions 0.6.18 thru 1.20.0 before 1.20.1, Nginx plus versions R13 thru R23 before R23 P1. Nginx plus version R24 before R24 P1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-193",
              "description": "CWE-193",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-07-11T15:06:16.000Z",
        "orgId": "9dacffd4-cb11-413f-8451-fbbfd4ddc0ab",
        "shortName": "f5"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://support.f5.com/csp/article/K12331123%2C"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "http://mailman.nginx.org/pipermail/nginx-announce/2021/000300.html"
        },
        {
          "name": "[apisix-notifications] 20210607 [GitHub] [apisix-website] Serendipity96 opened a new pull request #362: feat: add new blog",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.apache.org/thread.html/r6fc5c57b38e93e36213e9a18c8a4e5dbd5ced1c7e57f08a1735975ba%40%3Cnotifications.apisix.apache.org%3E"
        },
        {
          "name": "[apisix-notifications] 20210608 [GitHub] [apisix-website] liuxiran commented on a change in pull request #362: docs: added \"Apache APISIX not affected by NGINX CVE-2021-23017\"",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.apache.org/thread.html/r37e6b2165f7c910d8e15fd54f4697857619ad2625f56583802004009%40%3Cnotifications.apisix.apache.org%3E"
        },
        {
          "name": "[apisix-notifications] 20210608 [GitHub] [apisix-website] netlify[bot] edited a comment on pull request #362: docs: added \"Apache APISIX not affected by NGINX CVE-2021-23017\"",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.apache.org/thread.html/rf318aeeb4d7a3a312734780b47de83cefb7e6995da0b2cae5c28675c%40%3Cnotifications.apisix.apache.org%3E"
        },
        {
          "name": "[apisix-notifications] 20210608 [GitHub] [apisix-website] liuxiran merged pull request #362: docs: added \"Apache APISIX not affected by NGINX CVE-2021-23017\"",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.apache.org/thread.html/r4d4966221ca399ce948ef34884652265729d7d9ef8179c78d7f17e7f%40%3Cnotifications.apisix.apache.org%3E"
        },
        {
          "name": "[apisix-notifications] 20210608 [apisix-website] branch master updated: docs: added \"Apache APISIX not affected by NGINX CVE-2021-23017\" (#362)",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.apache.org/thread.html/rf232eecd47fdc44520192810560303073cefd684b321f85e311bad31%40%3Cnotifications.apisix.apache.org%3E"
        },
        {
          "name": "FEDORA-2021-b37cffac0d",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GNKOP2JR5L7KCIZTJRZDCUPJTUONMC5I/"
        },
        {
          "name": "FEDORA-2021-393d698493",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7SFVYHC7OXTEO4SMBWXDVK6E5IMEYMEE/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20210708-0006/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "http://packetstormsecurity.com/files/167720/Nginx-1.20.0-Denial-Of-Service.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "f5sirt@f5.com",
          "ID": "CVE-2021-23017",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Nginx Web Server, Nginx Plus",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "Nginx Web Server versions 0.6.18 thru 1.20.0 before 1.20.1, Nginx plus versions R13 thru R23 before R23 P1. Nginx plus version R24 before R24 P1"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-193"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://support.f5.com/csp/article/K12331123,",
              "refsource": "MISC",
              "url": "https://support.f5.com/csp/article/K12331123,"
            },
            {
              "name": "http://mailman.nginx.org/pipermail/nginx-announce/2021/000300.html",
              "refsource": "MISC",
              "url": "http://mailman.nginx.org/pipermail/nginx-announce/2021/000300.html"
            },
            {
              "name": "[apisix-notifications] 20210607 [GitHub] [apisix-website] Serendipity96 opened a new pull request #362: feat: add new blog",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/r6fc5c57b38e93e36213e9a18c8a4e5dbd5ced1c7e57f08a1735975ba@%3Cnotifications.apisix.apache.org%3E"
            },
            {
              "name": "[apisix-notifications] 20210608 [GitHub] [apisix-website] liuxiran commented on a change in pull request #362: docs: added \"Apache APISIX not affected by NGINX CVE-2021-23017\"",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/r37e6b2165f7c910d8e15fd54f4697857619ad2625f56583802004009@%3Cnotifications.apisix.apache.org%3E"
            },
            {
              "name": "[apisix-notifications] 20210608 [GitHub] [apisix-website] netlify[bot] edited a comment on pull request #362: docs: added \"Apache APISIX not affected by NGINX CVE-2021-23017\"",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/rf318aeeb4d7a3a312734780b47de83cefb7e6995da0b2cae5c28675c@%3Cnotifications.apisix.apache.org%3E"
            },
            {
              "name": "[apisix-notifications] 20210608 [GitHub] [apisix-website] liuxiran merged pull request #362: docs: added \"Apache APISIX not affected by NGINX CVE-2021-23017\"",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/r4d4966221ca399ce948ef34884652265729d7d9ef8179c78d7f17e7f@%3Cnotifications.apisix.apache.org%3E"
            },
            {
              "name": "[apisix-notifications] 20210608 [apisix-website] branch master updated: docs: added \"Apache APISIX not affected by NGINX CVE-2021-23017\" (#362)",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/rf232eecd47fdc44520192810560303073cefd684b321f85e311bad31@%3Cnotifications.apisix.apache.org%3E"
            },
            {
              "name": "FEDORA-2021-b37cffac0d",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GNKOP2JR5L7KCIZTJRZDCUPJTUONMC5I/"
            },
            {
              "name": "FEDORA-2021-393d698493",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7SFVYHC7OXTEO4SMBWXDVK6E5IMEYMEE/"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpuoct2021.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20210708-0006/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20210708-0006/"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpujan2022.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpuapr2022.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
            },
            {
              "name": "http://packetstormsecurity.com/files/167720/Nginx-1.20.0-Denial-Of-Service.html",
              "refsource": "MISC",
              "url": "http://packetstormsecurity.com/files/167720/Nginx-1.20.0-Denial-Of-Service.html"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9dacffd4-cb11-413f-8451-fbbfd4ddc0ab",
    "assignerShortName": "f5",
    "cveId": "CVE-2021-23017",
    "datePublished": "2021-06-01T12:28:09.000Z",
    "dateReserved": "2021-01-06T00:00:00.000Z",
    "dateUpdated": "2024-08-03T18:58:26.413Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-23017",
      "date": "2026-09-22",
      "epss": "0.53461",
      "percentile": "0.98941"
    },
    "fkie_nvd": {
      "configurations": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "236E1381-BE09-4C0B-9319-E803B7163ECC",
                  "versionEndExcluding": "1.20.1",
                  "versionStartIncluding": "0.6.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        },
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:openresty:openresty:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "BD31F1B9-1CDB-4547-A19D-6A416FC45510",
                  "versionEndExcluding": "1.19.3.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        },
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
                  "matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
                  "matchCriteriaId": "A930E247-0B43-43CB-98FF-6CE7B8189835",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        },
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*",
                  "matchCriteriaId": "E7CF3019-975D-40BB-A8A4-894E62BD3797",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        },
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:oracle:blockchain_platform:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "D0DBC938-A782-433F-8BF1-CA250C332AA7",
                  "versionEndExcluding": "21.1.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:oracle:communications_control_plane_monitor:3.4:*:*:*:*:*:*:*",
                  "matchCriteriaId": "21B1EEE2-CC09-45D0-9424-C3DB0EF0DC67",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:oracle:communications_control_plane_monitor:4.2:*:*:*:*:*:*:*",
                  "matchCriteriaId": "30446598-7680-4687-8E41-97E829F24998",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:oracle:communications_control_plane_monitor:4.3:*:*:*:*:*:*:*",
                  "matchCriteriaId": "F280A5FF-93B8-46BB-9A0C-46283CF494AE",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:oracle:communications_control_plane_monitor:4.4:*:*:*:*:*:*:*",
                  "matchCriteriaId": "8591B5FB-D04C-477E-B974-60AA047815B2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:oracle:communications_fraud_monitor:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "351ECB54-99BC-49E4-8A27-D62380ACFB50",
                  "versionEndIncluding": "4.4",
                  "versionStartIncluding": "3.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:oracle:communications_operations_monitor:3.4:*:*:*:*:*:*:*",
                  "matchCriteriaId": "D52F557F-D0A0-43D3-85F1-F10B6EBFAEDF",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:oracle:communications_operations_monitor:4.2:*:*:*:*:*:*:*",
                  "matchCriteriaId": "F545DFC9-F331-4E1D-BACB-3D26873E5858",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:oracle:communications_operations_monitor:4.3:*:*:*:*:*:*:*",
                  "matchCriteriaId": "CBE1A019-7BB6-4226-8AC4-9D6927ADAEFA",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:oracle:communications_operations_monitor:4.4:*:*:*:*:*:*:*",
                  "matchCriteriaId": "B98BAEB2-A540-4E8A-A946-C4331B913AFD",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:oracle:communications_session_border_controller:8.4:*:*:*:*:*:*:*",
                  "matchCriteriaId": "9C416FD3-2E2F-4BBC-BD5F-F896825883F4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:oracle:communications_session_border_controller:9.0:*:*:*:*:*:*:*",
                  "matchCriteriaId": "D886339E-EDB2-4879-BD54-1800E4CA9CAE",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:oracle:enterprise_communications_broker:3.3.0:*:*:*:*:*:*:*",
                  "matchCriteriaId": "3DCDD73B-57B1-4580-B922-5662E3AC13B6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:oracle:enterprise_session_border_controller:8.4:*:*:*:*:*:*:*",
                  "matchCriteriaId": "7015A8CB-8FA6-423E-8307-BD903244F517",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:oracle:enterprise_session_border_controller:9.0:*:*:*:*:*:*:*",
                  "matchCriteriaId": "F9A4E206-56C7-4578-AC9C-088B0C8D9CFE",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:oracle:enterprise_telephony_fraud_monitor:3.4:*:*:*:*:*:*:*",
                  "matchCriteriaId": "E927A24B-3B79-496B-8CE1-334441403750",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:oracle:enterprise_telephony_fraud_monitor:4.2:*:*:*:*:*:*:*",
                  "matchCriteriaId": "BFB6C2AE-8CC3-423B-B0C8-566B643E2CBF",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:oracle:enterprise_telephony_fraud_monitor:4.3:*:*:*:*:*:*:*",
                  "matchCriteriaId": "DBA3E95E-4AD0-4829-9061-F312C09DCFAF",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:oracle:enterprise_telephony_fraud_monitor:4.4:*:*:*:*:*:*:*",
                  "matchCriteriaId": "24AD7EAA-6178-4B2E-B15D-5FC9E23AA2F6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:oracle:goldengate:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "D972FB51-4035-42DE-A25E-EE12FF67A28C",
                  "versionEndExcluding": "21.4.0.0.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact."
        },
        {
          "lang": "es",
          "value": "Se identific\u00f3 un problema de seguridad en el solucionador de nginx, que podr\u00eda permitir a un atacante que pueda falsificar paquetes UDP desde el servidor DNS para causar una sobrescritura de memoria de 1 byte, lo que causar\u00eda un bloqueo del proceso de trabajo u otro impacto potencial"
        }
      ],
      "id": "CVE-2021-23017",
      "lastModified": "2024-11-21T05:51:09.480",
      "metrics": {
        "cvssMetricV2": [
          {
            "acInsufInfo": false,
            "baseSeverity": "MEDIUM",
            "cvssData": {
              "accessComplexity": "MEDIUM",
              "accessVector": "NETWORK",
              "authentication": "NONE",
              "availabilityImpact": "PARTIAL",
              "baseScore": 6.8,
              "confidentialityImpact": "PARTIAL",
              "integrityImpact": "PARTIAL",
              "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
              "version": "2.0"
            },
            "exploitabilityScore": 8.6,
            "impactScore": 6.4,
            "obtainAllPrivilege": false,
            "obtainOtherPrivilege": false,
            "obtainUserPrivilege": false,
            "source": "nvd@nist.gov",
            "type": "Primary",
            "userInteractionRequired": false
          }
        ],
        "cvssMetricV31": [
          {
            "cvssData": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "LOW",
              "baseScore": 7.7,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
              "version": "3.1"
            },
            "exploitabilityScore": 2.2,
            "impactScore": 5.5,
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      },
      "published": "2021-06-01T13:15:07.853",
      "references": [
        {
          "source": "f5sirt@f5.com",
          "tags": [
            "Mailing List",
            "Patch",
            "Vendor Advisory"
          ],
          "url": "http://mailman.nginx.org/pipermail/nginx-announce/2021/000300.html"
        },
        {
          "source": "f5sirt@f5.com",
          "tags": [
            "Third Party Advisory",
            "VDB Entry"
          ],
          "url": "http://packetstormsecurity.com/files/167720/Nginx-1.20.0-Denial-Of-Service.html"
        },
        {
          "source": "f5sirt@f5.com",
          "url": "https://lists.apache.org/thread.html/r37e6b2165f7c910d8e15fd54f4697857619ad2625f56583802004009%40%3Cnotifications.apisix.apache.org%3E"
        },
        {
          "source": "f5sirt@f5.com",
          "url": "https://lists.apache.org/thread.html/r4d4966221ca399ce948ef34884652265729d7d9ef8179c78d7f17e7f%40%3Cnotifications.apisix.apache.org%3E"
        },
        {
          "source": "f5sirt@f5.com",
          "url": "https://lists.apache.org/thread.html/r6fc5c57b38e93e36213e9a18c8a4e5dbd5ced1c7e57f08a1735975ba%40%3Cnotifications.apisix.apache.org%3E"
        },
        {
          "source": "f5sirt@f5.com",
          "url": "https://lists.apache.org/thread.html/rf232eecd47fdc44520192810560303073cefd684b321f85e311bad31%40%3Cnotifications.apisix.apache.org%3E"
        },
        {
          "source": "f5sirt@f5.com",
          "url": "https://lists.apache.org/thread.html/rf318aeeb4d7a3a312734780b47de83cefb7e6995da0b2cae5c28675c%40%3Cnotifications.apisix.apache.org%3E"
        },
        {
          "source": "f5sirt@f5.com",
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7SFVYHC7OXTEO4SMBWXDVK6E5IMEYMEE/"
        },
        {
          "source": "f5sirt@f5.com",
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GNKOP2JR5L7KCIZTJRZDCUPJTUONMC5I/"
        },
        {
          "source": "f5sirt@f5.com",
          "tags": [
            "Third Party Advisory"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20210708-0006/"
        },
        {
          "source": "f5sirt@f5.com",
          "url": "https://support.f5.com/csp/article/K12331123%2C"
        },
        {
          "source": "f5sirt@f5.com",
          "tags": [
            "Patch",
            "Third Party Advisory"
          ],
          "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
        },
        {
          "source": "f5sirt@f5.com",
          "tags": [
            "Patch",
            "Third Party Advisory"
          ],
          "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
        },
        {
          "source": "f5sirt@f5.com",
          "tags": [
            "Patch",
            "Third Party Advisory"
          ],
          "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Mailing List",
            "Patch",
            "Vendor Advisory"
          ],
          "url": "http://mailman.nginx.org/pipermail/nginx-announce/2021/000300.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Third Party Advisory",
            "VDB Entry"
          ],
          "url": "http://packetstormsecurity.com/files/167720/Nginx-1.20.0-Denial-Of-Service.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://lists.apache.org/thread.html/r37e6b2165f7c910d8e15fd54f4697857619ad2625f56583802004009%40%3Cnotifications.apisix.apache.org%3E"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://lists.apache.org/thread.html/r4d4966221ca399ce948ef34884652265729d7d9ef8179c78d7f17e7f%40%3Cnotifications.apisix.apache.org%3E"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://lists.apache.org/thread.html/r6fc5c57b38e93e36213e9a18c8a4e5dbd5ced1c7e57f08a1735975ba%40%3Cnotifications.apisix.apache.org%3E"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://lists.apache.org/thread.html/rf232eecd47fdc44520192810560303073cefd684b321f85e311bad31%40%3Cnotifications.apisix.apache.org%3E"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://lists.apache.org/thread.html/rf318aeeb4d7a3a312734780b47de83cefb7e6995da0b2cae5c28675c%40%3Cnotifications.apisix.apache.org%3E"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7SFVYHC7OXTEO4SMBWXDVK6E5IMEYMEE/"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GNKOP2JR5L7KCIZTJRZDCUPJTUONMC5I/"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Third Party Advisory"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20210708-0006/"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://support.f5.com/csp/article/K12331123%2C"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Patch",
            "Third Party Advisory"
          ],
          "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Patch",
            "Third Party Advisory"
          ],
          "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Patch",
            "Third Party Advisory"
          ],
          "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
        }
      ],
      "sourceIdentifier": "f5sirt@f5.com",
      "vulnStatus": "Modified",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-193"
            }
          ],
          "source": "f5sirt@f5.com",
          "type": "Secondary"
        },
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-193"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "microsoft_vex": {
      "current_release_date": "2021-06-11T00:00:00.000Z",
      "cve": "CVE-2021-23017",
      "id": "msrc_CVE-2021-23017",
      "initial_release_date": "2021-06-02T00:00:00.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "A security issue in nginx resolver was identified which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite resulting in worker process crash or potential other impact.",
      "url": "https://msrc.microsoft.com/csaf/vex/2021/msrc_cve-2021-23017.json",
      "version": "1"
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "236E1381-BE09-4C0B-9319-E803B7163ECC",
                    "versionEndExcluding": "1.20.1",
                    "versionStartIncluding": "0.6.18",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:openresty:openresty:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "BD31F1B9-1CDB-4547-A19D-6A416FC45510",
                    "versionEndExcluding": "1.19.3.2",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
                    "matchCriteriaId": "A930E247-0B43-43CB-98FF-6CE7B8189835",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E7CF3019-975D-40BB-A8A4-894E62BD3797",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:oracle:blockchain_platform:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "D0DBC938-A782-433F-8BF1-CA250C332AA7",
                    "versionEndExcluding": "21.1.2",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:oracle:communications_control_plane_monitor:3.4:*:*:*:*:*:*:*",
                    "matchCriteriaId": "21B1EEE2-CC09-45D0-9424-C3DB0EF0DC67",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:oracle:communications_control_plane_monitor:4.2:*:*:*:*:*:*:*",
                    "matchCriteriaId": "30446598-7680-4687-8E41-97E829F24998",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:oracle:communications_control_plane_monitor:4.3:*:*:*:*:*:*:*",
                    "matchCriteriaId": "F280A5FF-93B8-46BB-9A0C-46283CF494AE",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:oracle:communications_control_plane_monitor:4.4:*:*:*:*:*:*:*",
                    "matchCriteriaId": "8591B5FB-D04C-477E-B974-60AA047815B2",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:oracle:communications_fraud_monitor:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "351ECB54-99BC-49E4-8A27-D62380ACFB50",
                    "versionEndIncluding": "4.4",
                    "versionStartIncluding": "3.4",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:oracle:communications_operations_monitor:3.4:*:*:*:*:*:*:*",
                    "matchCriteriaId": "D52F557F-D0A0-43D3-85F1-F10B6EBFAEDF",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:oracle:communications_operations_monitor:4.2:*:*:*:*:*:*:*",
                    "matchCriteriaId": "F545DFC9-F331-4E1D-BACB-3D26873E5858",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:oracle:communications_operations_monitor:4.3:*:*:*:*:*:*:*",
                    "matchCriteriaId": "CBE1A019-7BB6-4226-8AC4-9D6927ADAEFA",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:oracle:communications_operations_monitor:4.4:*:*:*:*:*:*:*",
                    "matchCriteriaId": "B98BAEB2-A540-4E8A-A946-C4331B913AFD",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:oracle:communications_session_border_controller:8.4:*:*:*:*:*:*:*",
                    "matchCriteriaId": "9C416FD3-2E2F-4BBC-BD5F-F896825883F4",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:oracle:communications_session_border_controller:9.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "D886339E-EDB2-4879-BD54-1800E4CA9CAE",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:oracle:enterprise_communications_broker:3.3.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "3DCDD73B-57B1-4580-B922-5662E3AC13B6",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:oracle:enterprise_session_border_controller:8.4:*:*:*:*:*:*:*",
                    "matchCriteriaId": "7015A8CB-8FA6-423E-8307-BD903244F517",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:oracle:enterprise_session_border_controller:9.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "F9A4E206-56C7-4578-AC9C-088B0C8D9CFE",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:oracle:enterprise_telephony_fraud_monitor:3.4:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E927A24B-3B79-496B-8CE1-334441403750",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:oracle:enterprise_telephony_fraud_monitor:4.2:*:*:*:*:*:*:*",
                    "matchCriteriaId": "BFB6C2AE-8CC3-423B-B0C8-566B643E2CBF",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:oracle:enterprise_telephony_fraud_monitor:4.3:*:*:*:*:*:*:*",
                    "matchCriteriaId": "DBA3E95E-4AD0-4829-9061-F312C09DCFAF",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:oracle:enterprise_telephony_fraud_monitor:4.4:*:*:*:*:*:*:*",
                    "matchCriteriaId": "24AD7EAA-6178-4B2E-B15D-5FC9E23AA2F6",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:oracle:goldengate:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "D972FB51-4035-42DE-A25E-EE12FF67A28C",
                    "versionEndExcluding": "21.4.0.0.0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact."
          },
          {
            "lang": "es",
            "value": "Se identific\u00f3 un problema de seguridad en el solucionador de nginx, que podr\u00eda permitir a un atacante que pueda falsificar paquetes UDP desde el servidor DNS para causar una sobrescritura de memoria de 1 byte, lo que causar\u00eda un bloqueo del proceso de trabajo u otro impacto potencial"
          }
        ],
        "id": "CVE-2021-23017",
        "lastModified": "2024-11-21T05:51:09.480",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "MEDIUM",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 6.8,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 8.6,
              "impactScore": 6.4,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "LOW",
                "baseScore": 7.7,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
                "version": "3.1"
              },
              "exploitabilityScore": 2.2,
              "impactScore": 5.5,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2021-06-01T13:15:07.853",
        "references": [
          {
            "source": "f5sirt@f5.com",
            "tags": [
              "Mailing List",
              "Patch",
              "Vendor Advisory"
            ],
            "url": "http://mailman.nginx.org/pipermail/nginx-announce/2021/000300.html"
          },
          {
            "source": "f5sirt@f5.com",
            "tags": [
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "http://packetstormsecurity.com/files/167720/Nginx-1.20.0-Denial-Of-Service.html"
          },
          {
            "source": "f5sirt@f5.com",
            "url": "https://lists.apache.org/thread.html/r37e6b2165f7c910d8e15fd54f4697857619ad2625f56583802004009%40%3Cnotifications.apisix.apache.org%3E"
          },
          {
            "source": "f5sirt@f5.com",
            "url": "https://lists.apache.org/thread.html/r4d4966221ca399ce948ef34884652265729d7d9ef8179c78d7f17e7f%40%3Cnotifications.apisix.apache.org%3E"
          },
          {
            "source": "f5sirt@f5.com",
            "url": "https://lists.apache.org/thread.html/r6fc5c57b38e93e36213e9a18c8a4e5dbd5ced1c7e57f08a1735975ba%40%3Cnotifications.apisix.apache.org%3E"
          },
          {
            "source": "f5sirt@f5.com",
            "url": "https://lists.apache.org/thread.html/rf232eecd47fdc44520192810560303073cefd684b321f85e311bad31%40%3Cnotifications.apisix.apache.org%3E"
          },
          {
            "source": "f5sirt@f5.com",
            "url": "https://lists.apache.org/thread.html/rf318aeeb4d7a3a312734780b47de83cefb7e6995da0b2cae5c28675c%40%3Cnotifications.apisix.apache.org%3E"
          },
          {
            "source": "f5sirt@f5.com",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7SFVYHC7OXTEO4SMBWXDVK6E5IMEYMEE/"
          },
          {
            "source": "f5sirt@f5.com",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GNKOP2JR5L7KCIZTJRZDCUPJTUONMC5I/"
          },
          {
            "source": "f5sirt@f5.com",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20210708-0006/"
          },
          {
            "source": "f5sirt@f5.com",
            "url": "https://support.f5.com/csp/article/K12331123%2C"
          },
          {
            "source": "f5sirt@f5.com",
            "tags": [
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
          },
          {
            "source": "f5sirt@f5.com",
            "tags": [
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
          },
          {
            "source": "f5sirt@f5.com",
            "tags": [
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Patch",
              "Vendor Advisory"
            ],
            "url": "http://mailman.nginx.org/pipermail/nginx-announce/2021/000300.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "http://packetstormsecurity.com/files/167720/Nginx-1.20.0-Denial-Of-Service.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.apache.org/thread.html/r37e6b2165f7c910d8e15fd54f4697857619ad2625f56583802004009%40%3Cnotifications.apisix.apache.org%3E"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.apache.org/thread.html/r4d4966221ca399ce948ef34884652265729d7d9ef8179c78d7f17e7f%40%3Cnotifications.apisix.apache.org%3E"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.apache.org/thread.html/r6fc5c57b38e93e36213e9a18c8a4e5dbd5ced1c7e57f08a1735975ba%40%3Cnotifications.apisix.apache.org%3E"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.apache.org/thread.html/rf232eecd47fdc44520192810560303073cefd684b321f85e311bad31%40%3Cnotifications.apisix.apache.org%3E"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.apache.org/thread.html/rf318aeeb4d7a3a312734780b47de83cefb7e6995da0b2cae5c28675c%40%3Cnotifications.apisix.apache.org%3E"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7SFVYHC7OXTEO4SMBWXDVK6E5IMEYMEE/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GNKOP2JR5L7KCIZTJRZDCUPJTUONMC5I/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20210708-0006/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://support.f5.com/csp/article/K12331123%2C"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
          }
        ],
        "sourceIdentifier": "f5sirt@f5.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-193"
              }
            ],
            "source": "f5sirt@f5.com",
            "type": "Secondary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-193"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-08-04T08:47:14+00:00",
      "cve": "CVE-2021-23017",
      "id": "CVE-2021-23017",
      "initial_release_date": "2021-05-25T00:00:00+00:00",
      "product_status:fixed": "403",
      "product_status:known_affected": "10",
      "product_status:known_not_affected": "11",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "nginx: Off-by-one in ngx_resolver_copy() when labels are followed by a pointer to a root domain name",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-23017.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-08-31T02:07:23Z",
      "cve": "CVE-2021-23017",
      "id": "CVE-2021-23017",
      "initial_release_date": "2023-02-15T03:45:43Z",
      "product_status:recommended": "103",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-23017",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-23017.json",
      "version": "18"
    }
  }
}



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.



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.