{ "id": "CVE-2023-6683", "sourceIdentifier": "secalert@redhat.com", "published": "2024-01-12T19:15:11.480", "lastModified": "2025-05-02T15:10:54.503", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [ { "lang": "en", "value": "A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. The qemu_clipboard_request() function can be reached before vnc_server_cut_text_caps() was called and had the chance to initialize the clipboard peer, leading to a NULL pointer dereference. This could allow a malicious authenticated VNC client to crash QEMU and trigger a denial of service." }, { "lang": "es", "value": "Se encontr\u00f3 una falla en el servidor QEMU built-in VNC al procesar mensajes ClientCutText. Se puede acceder a la funci\u00f3n qemu_clipboard_request() antes de que se llamara a vnc_server_cut_text_caps() y tuviera la oportunidad de inicializar el par del portapapeles, lo que lleva a una desreferencia del puntero NULL. Esto podr\u00eda permitir que un cliente VNC autenticado malicioso bloquee QEMU y provoque una denegaci\u00f3n de servicio." } ], "metrics": { "cvssMetricV31": [ { "source": "secalert@redhat.com", "type": "Secondary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH" }, "exploitabilityScore": 2.8, "impactScore": 3.6 }, { "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", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH" }, "exploitabilityScore": 2.8, "impactScore": 3.6 } ] }, "weaknesses": [ { "source": "secalert@redhat.com", "type": "Secondary", "description": [ { "lang": "en", "value": "CWE-476" } ] }, { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "CWE-476" } ] } ], "configurations": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.0", "versionEndExcluding": "8.2.2", "matchCriteriaId": "C0232DBC-5896-4EC7-AEE7-595BBD67A5C7" } ] } ] }, { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*", "matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943" }, { "vulnerable": true, "criteria": "cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*", "matchCriteriaId": "7F6FB57C-2BC7-487C-96DD-132683AEB35D" } ] } ] } ], "references": [ { "url": "https://access.redhat.com/errata/RHSA-2024:2135", "source": "secalert@redhat.com", "tags": [ "Third Party Advisory" ] }, { "url": "https://access.redhat.com/errata/RHSA-2024:2962", "source": "secalert@redhat.com", "tags": [ "Third Party Advisory" ] }, { "url": "https://access.redhat.com/security/cve/CVE-2023-6683", "source": "secalert@redhat.com", "tags": [ "Third Party Advisory" ] }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2254825", "source": "secalert@redhat.com", "tags": [ "Issue Tracking", "Patch" ] }, { "url": "https://access.redhat.com/errata/RHSA-2024:2135", "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory" ] }, { "url": "https://access.redhat.com/errata/RHSA-2024:2962", "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory" ] }, { "url": "https://access.redhat.com/security/cve/CVE-2023-6683", "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory" ] }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2254825", "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Issue Tracking", "Patch" ] }, { "url": "https://security.netapp.com/advisory/ntap-20240223-0001/", "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory" ] } ] }