CVE-2024-31145
Vulnerability from cvelistv5
Published
2024-09-25 10:31
Modified
2024-09-25 13:29
Severity ?
EPSS score ?
Summary
Certain PCI devices in a system might be assigned Reserved Memory
Regions (specified via Reserved Memory Region Reporting, "RMRR") for
Intel VT-d or Unity Mapping ranges for AMD-Vi. These are typically used
for platform tasks such as legacy USB emulation.
Since the precise purpose of these regions is unknown, once a device
associated with such a region is active, the mappings of these regions
need to remain continuouly accessible by the device. In the logic
establishing these mappings, error handling was flawed, resulting in
such mappings to potentially remain in place when they should have been
removed again. Respective guests would then gain access to memory
regions which they aren't supposed to have access to.
References
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-09-25T11:02:50.356Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"url": "http://xenbits.xen.org/xsa/advisory-460.html"
},
{
"url": "http://www.openwall.com/lists/oss-security/2024/08/14/2"
}
],
"title": "CVE Program Container"
},
{
"affected": [
{
"cpes": [
"cpe:2.3:o:xen:xen:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "xen",
"vendor": "xen",
"versions": [
{
"lessThanOrEqual": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"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"
}
},
{
"other": {
"content": {
"id": "CVE-2024-31145",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-09-25T13:27:44.216381Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-400",
"description": "CWE-400 Uncontrolled Resource Consumption",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-09-25T13:29:33.308Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Xen",
"vendor": "Xen",
"versions": [
{
"status": "unknown",
"version": "consult Xen advisory XSA-460"
}
]
}
],
"configurations": [
{
"lang": "en",
"value": "Only x86 systems passing PCI devices with RMRR/Unity regions through to\nguests are potentially affected.\n\nPCI devices listed in a vm.cfg file have error handling which causes `xl\ncreate` to abort and tear down the domain, and is thus believed to be\nsafe.\n\nPCI devices attached using `xl pci-attach` will result in the command\nreturning nonzero, but will not tear down the domain. VMs which\ncontinue to run after `xl pci-attach` has failed expose the\nvulnerability.\n\nFor x86 Intel hardware, Xen versions 4.0 and later are affected.\n\nFor all x86 hardware, Xen versions having the XSA-378 fixes applied /\nbackported are affected."
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "This issue was discovered by Teddy Astie of Vates and diagnosed as a\nsecurity issue by Jan Beulich of SUSE."
}
],
"datePublic": "2024-08-13T12:00:00Z",
"descriptions": [
{
"lang": "en",
"value": "Certain PCI devices in a system might be assigned Reserved Memory\nRegions (specified via Reserved Memory Region Reporting, \"RMRR\") for\nIntel VT-d or Unity Mapping ranges for AMD-Vi. These are typically used\nfor platform tasks such as legacy USB emulation.\n\nSince the precise purpose of these regions is unknown, once a device\nassociated with such a region is active, the mappings of these regions\nneed to remain continuouly accessible by the device. In the logic\nestablishing these mappings, error handling was flawed, resulting in\nsuch mappings to potentially remain in place when they should have been\nremoved again. Respective guests would then gain access to memory\nregions which they aren\u0027t supposed to have access to."
}
],
"impacts": [
{
"descriptions": [
{
"lang": "en",
"value": "The precise impact is system specific. Denial of Service (DoS)\naffecting the entire host or individual guests, privilege escalation,\nand information leaks cannot be ruled out."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-09-25T10:31:43.523Z",
"orgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
"shortName": "XEN"
},
"references": [
{
"url": "https://xenbits.xenproject.org/xsa/advisory-460.html"
}
],
"title": "error handling in x86 IOMMU identity mapping",
"workarounds": [
{
"lang": "en",
"value": "Assigning devices using the vm.cfg file for attachment at boot avoids\nthe vulnerability."
}
]
}
},
"cveMetadata": {
"assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
"assignerShortName": "XEN",
"cveId": "CVE-2024-31145",
"datePublished": "2024-09-25T10:31:43.523Z",
"dateReserved": "2024-03-28T18:14:12.893Z",
"dateUpdated": "2024-09-25T13:29:33.308Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2024-31145\",\"sourceIdentifier\":\"security@xen.org\",\"published\":\"2024-09-25T11:15:12.133\",\"lastModified\":\"2024-11-21T09:12:55.410\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Certain PCI devices in a system might be assigned Reserved Memory\\nRegions (specified via Reserved Memory Region Reporting, \\\"RMRR\\\") for\\nIntel VT-d or Unity Mapping ranges for AMD-Vi. These are typically used\\nfor platform tasks such as legacy USB emulation.\\n\\nSince the precise purpose of these regions is unknown, once a device\\nassociated with such a region is active, the mappings of these regions\\nneed to remain continuouly accessible by the device. In the logic\\nestablishing these mappings, error handling was flawed, resulting in\\nsuch mappings to potentially remain in place when they should have been\\nremoved again. Respective guests would then gain access to memory\\nregions which they aren\u0027t supposed to have access to.\"},{\"lang\":\"es\",\"value\":\"Ciertos dispositivos PCI de un sistema se les pueden asignar regiones de memoria reservadas (especificadas a trav\u00e9s de informes de regiones de memoria reservadas, \\\"RMRR\\\") para Intel VT-d o rangos de mapeo de Unity para AMD-Vi. Por lo general, se utilizan para tareas de plataforma como la emulaci\u00f3n USB heredada. Dado que se desconoce el prop\u00f3sito preciso de estas regiones, una vez que un dispositivo asociado con dicha regi\u00f3n est\u00e1 activo, las asignaciones de estas regiones deben permanecer accesibles continuamente para el dispositivo. En la l\u00f3gica que establece estas asignaciones, el manejo de errores era defectuoso, lo que result\u00f3 en que dichas asignaciones potencialmente permanecieran en su lugar cuando deber\u00edan haberse eliminado nuevamente. Los invitados respectivos obtendr\u00edan entonces acceso a regiones de memoria a las que se supone que no deber\u00edan tener acceso.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":0.8,\"impactScore\":6.0}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-400\"}]}],\"references\":[{\"url\":\"https://xenbits.xenproject.org/xsa/advisory-460.html\",\"source\":\"security@xen.org\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2024/08/14/2\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://xenbits.xen.org/xsa/advisory-460.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.