{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-31146", "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "state": "PUBLISHED", "assignerShortName": "XEN", "dateReserved": "2024-03-28T18:14:12.893Z", "datePublished": "2024-09-25T10:31:51.154Z", "dateUpdated": "2024-09-25T13:24:47.409Z"}, "containers": {"cna": {"title": "PCI device pass-through with shared resources", "datePublic": "2024-08-13T12:00:00Z", "descriptions": [{"lang": "en", "value": "When multiple devices share resources and one of them is to be passed\nthrough to a guest, security of the entire system and of respective\nguests individually cannot really be guaranteed without knowing\ninternals of any of the involved guests. Therefore such a configuration\ncannot really be security-supported, yet making that explicit was so far\nmissing.\n\nResources the sharing of which is known to be problematic include, but\nare not limited to\n- - PCI Base Address Registers (BARs) of multiple devices mapping to the\n same page (4k on x86),\n- - INTx lines."}], "impacts": [{"descriptions": [{"lang": "en", "value": "The precise effects when shared resources are in use are system, device,\nguest, and resource specific. None of privilege escalation, information\nleaks, or Denial of Service (DoS) can be ruled out."}]}], "affected": [{"defaultStatus": "unknown", "product": "Xen", "vendor": "Xen", "versions": [{"status": "unknown", "version": "consult Xen advisory XSA-461"}]}], "configurations": [{"lang": "en", "value": "All systems making use of PCI pass-through are in principle vulnerable,\nwhen any kind of resource is shared. Just to re-iterate, even in the\nabsence of resource sharing caveats apply to passing through of PCI\ndevices to entirely untrusted guests."}], "workarounds": [{"lang": "en", "value": "Passing through only SR-IOV virtual functions or devices with well-\nseparated resources will avoid this particular vulnerability. Passing\nthrough all devices sharing a given resource to the same guest will also\navoid this particular vulnerability."}], "references": [{"url": "https://xenbits.xenproject.org/xsa/advisory-461.html"}], "providerMetadata": {"orgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "shortName": "XEN", "dateUpdated": "2024-09-25T10:31:51.154Z"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "http://xenbits.xen.org/xsa/advisory-461.html"}, {"url": "http://www.openwall.com/lists/oss-security/2024/08/14/3"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-09-25T11:02:55.207Z"}}, {"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-400", "lang": "en", "description": "CWE-400 Uncontrolled Resource Consumption"}]}], "affected": [{"vendor": "xen", "product": "xen", "cpes": ["cpe:2.3:o:xen:xen:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "*", "versionType": "custom"}]}], "metrics": [{"cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2024-09-25T13:14:46.996097Z", "id": "CVE-2024-31146", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-25T13:24:47.409Z"}}]}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "When multiple devices share resources and one of them is to be passed\nthrough to a guest, security of the entire system and of respective\nguests individually cannot really be guaranteed without knowing\ninternals of any of the involved guests. Therefore such a configuration\ncannot really be security-supported, yet making that explicit was so far\nmissing.\n\nResources the sharing of which is known to be problematic include, but\nare not limited to\n- - PCI Base Address Registers (BARs) of multiple devices mapping to the\n same page (4k on x86),\n- - INTx lines."}, {"lang": "es", "value": "Cuando varios dispositivos comparten recursos y uno de ellos debe pasarse a un invitado, la seguridad de todo el sistema y de los respectivos invitados individualmente no se puede garantizar realmente sin conocer los detalles internos de cualquiera de los invitados involucrados. Por lo tanto, una configuraci\u00f3n de este tipo no puede realmente ser compatible con la seguridad, aunque hasta ahora no se hab\u00eda hecho expl\u00edcita. Los recursos cuyo uso compartido se sabe que es problem\u00e1tico incluyen, entre otros: - Registros de direcci\u00f3n base PCI (BAR) de varios dispositivos que se asignan a la misma p\u00e1gina (4k en x86), - L\u00edneas INTx."}], "id": "CVE-2024-31146", "lastModified": "2024-09-26T13:32:02.803", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 0.8, "impactScore": 6.0, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2024-09-25T11:15:12.220", "references": [{"source": "security@xen.org", "url": "https://xenbits.xenproject.org/xsa/advisory-461.html"}], "sourceIdentifier": "security@xen.org", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}