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83 lines
3.2 KiB
JSON
83 lines
3.2 KiB
JSON
{
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"id": "CVE-2023-34328",
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"sourceIdentifier": "security@xen.org",
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"published": "2024-01-05T17:15:08.730",
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"lastModified": "2024-01-11T15:56:17.957",
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"vulnStatus": "Analyzed",
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"cveTags": [],
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"descriptions": [
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{
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"lang": "en",
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"value": "\n[This CNA information record relates to multiple CVEs; the\ntext explains which aspects/vulnerabilities correspond to which CVE.]\n\nAMD CPUs since ~2014 have extensions to normal x86 debugging functionality.\nXen supports guests using these extensions.\n\nUnfortunately there are errors in Xen's handling of the guest state, leading\nto denials of service.\n\n 1) CVE-2023-34327 - An HVM vCPU can end up operating in the context of\n a previous vCPUs debug mask state.\n\n 2) CVE-2023-34328 - A PV vCPU can place a breakpoint over the live GDT.\n This allows the PV vCPU to exploit XSA-156 / CVE-2015-8104 and lock\n up the CPU entirely.\n"
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},
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{
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"lang": "es",
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"value": "[Este registro de informaci\u00f3n de la CNA se relaciona con m\u00faltiples CVE; el texto explica qu\u00e9 aspectos/vulnerabilidades corresponden a cada CVE.] Las CPU AMD desde ~2014 tienen extensiones a la funcionalidad de depuraci\u00f3n x86 normal. Xen admite invitados que utilizan estas extensiones. Desafortunadamente, hay errores en el manejo del estado invitado por parte de Xen, lo que lleva a denegaciones de servicio. 1) CVE-2023-34327: una vCPU HVM puede terminar funcionando en el contexto de un estado de m\u00e1scara de depuraci\u00f3n de vCPU anterior. 2) CVE-2023-34328: una vCPU PV puede colocar un punto de interrupci\u00f3n sobre la GDT en vivo. Esto permite que PV vCPU aproveche XSA-156/CVE-2015-8104 y bloquee la CPU por completo."
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}
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],
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"metrics": {
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"cvssMetricV31": [
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{
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"source": "nvd@nist.gov",
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"type": "Primary",
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"cvssData": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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"attackVector": "LOCAL",
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"attackComplexity": "LOW",
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"privilegesRequired": "LOW",
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"userInteraction": "NONE",
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"scope": "UNCHANGED",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"availabilityImpact": "HIGH",
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"baseScore": 5.5,
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"baseSeverity": "MEDIUM"
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},
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"exploitabilityScore": 1.8,
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"impactScore": 3.6
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}
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]
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},
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"weaknesses": [
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{
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"source": "nvd@nist.gov",
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"type": "Primary",
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"description": [
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{
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"lang": "en",
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"value": "NVD-CWE-noinfo"
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}
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]
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}
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],
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"configurations": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.5.0",
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"versionEndExcluding": "4.14.0",
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"matchCriteriaId": "853DC15E-4B7F-40A1-8932-7FE496D93D82"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://xenbits.xenproject.org/xsa/advisory-444.html",
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"source": "security@xen.org",
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"tags": [
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"Patch",
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"Vendor Advisory"
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]
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}
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]
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} |