{ "id": "CVE-2021-4209", "sourceIdentifier": "secalert@redhat.com", "published": "2022-08-24T16:15:09.927", "lastModified": "2022-10-27T16:57:33.273", "vulnStatus": "Analyzed", "descriptions": [ { "lang": "en", "value": "A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service after authentication in rare circumstances." }, { "lang": "es", "value": "Se ha encontrado un fallo de desreferencia de puntero NULL en GnuTLS. Como las funciones de actualizaci\u00f3n de hash de Nettle llaman internamente a memcpy, proporcionar una entrada de longitud cero puede causar un comportamiento indefinido. Este fallo conlleva a una denegaci\u00f3n de servicio tras la autenticaci\u00f3n en raras circunstancias." } ], "metrics": { "cvssMetricV31": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM" }, "exploitabilityScore": 2.8, "impactScore": 3.6 } ] }, "weaknesses": [ { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "CWE-476" } ] }, { "source": "secalert@redhat.com", "type": "Secondary", "description": [ { "lang": "en", "value": "CWE-476" } ] } ], "configurations": [ { "operator": "AND", "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:*", "versionEndExcluding": "3.7.3", "matchCriteriaId": "D7F5A2FE-408A-4E36-BC95-40E502C06682" } ] } ] }, { "operator": "AND", "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*", "matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943" } ] } ] }, { "operator": "AND", "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*", "matchCriteriaId": "3A756737-1CC4-42C2-A4DF-E1C893B4E2D5" }, { "vulnerable": true, "criteria": "cpe:2.3:a:netapp:solidfire_\\&_hci_management_node:-:*:*:*:*:*:*:*", "matchCriteriaId": "D6D700C5-F67F-4FFB-BE69-D524592A3D2E" } ] } ] }, { "operator": "AND", "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:netapp:hci_bootstrap_os:-:*:*:*:*:*:*:*", "matchCriteriaId": "84574629-EB00-4235-8962-45070F3C9F6A" } ] }, { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": false, "criteria": "cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:*", "matchCriteriaId": "AD7447BC-F315-4298-A822-549942FC118B" } ] } ] } ], "references": [ { "url": "https://access.redhat.com/security/cve/CVE-2021-4209", "source": "secalert@redhat.com", "tags": [ "Third Party Advisory" ] }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2044156", "source": "secalert@redhat.com", "tags": [ "Issue Tracking", "Third Party Advisory" ] }, { "url": "https://gitlab.com/gnutls/gnutls/-/commit/3db352734472d851318944db13be73da61300568", "source": "secalert@redhat.com", "tags": [ "Patch", "Third Party Advisory" ] }, { "url": "https://gitlab.com/gnutls/gnutls/-/issues/1306", "source": "secalert@redhat.com", "tags": [ "Third Party Advisory" ] }, { "url": "https://gitlab.com/gnutls/gnutls/-/merge_requests/1503", "source": "secalert@redhat.com", "tags": [ "Third Party Advisory" ] }, { "url": "https://security.netapp.com/advisory/ntap-20220915-0005/", "source": "secalert@redhat.com", "tags": [ "Third Party Advisory" ] } ] }