CVE-2023-34321

Arm provides multiple helpers to clean & invalidate the cache for a given region. This is, for instance, used when allocating guest memory to ensure any writes (such as the ones during scrubbing) have reached memory before handing over the page to a guest. Unfortunately, the arithmetics in the helpers can overflow and would then result to skip the cache cleaning/invalidation. Therefore there is no guarantee when all the writes will reach the memory.

CVSS v3 3.3 LOW

3.3^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.8 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://xenbits.xenproject.org/xsa/advisory-437.html	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:*

History

No history.

Information

Published : 2024-01-05 17:15

Updated : 2024-01-11 17:08

NVD link : CVE-2023-34321

Mitre link : CVE-2023-34321

CVE.ORG link : CVE-2023-34321

JSON object : View

Products Affected

xen

xen

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

{"id": "CVE-2023-34321", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 3.3, "attackVector": "LOCAL", "baseSeverity": "LOW", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 1.8}]}, "published": "2024-01-05T17:15:08.357", "references": [{"url": "https://xenbits.xenproject.org/xsa/advisory-437.html", "tags": ["Patch", "Vendor Advisory"], "source": "security@xen.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-119"}]}], "descriptions": [{"lang": "en", "value": "Arm provides multiple helpers to clean & invalidate the cache\nfor a given region. This is, for instance, used when allocating\nguest memory to ensure any writes (such as the ones during scrubbing)\nhave reached memory before handing over the page to a guest.\n\nUnfortunately, the arithmetics in the helpers can overflow and would\nthen result to skip the cache cleaning/invalidation. Therefore there\nis no guarantee when all the writes will reach the memory.\n"}, {"lang": "es", "value": "Arm proporciona m\u00faltiples ayudas para limpiar e invalidar el cach\u00e9 de una regi\u00f3n determinada. Esto se utiliza, por ejemplo, al asignar memoria de invitado para garantizar que cualquier escritura (como las que se realizan durante la depuraci\u00f3n) haya llegado a la memoria antes de entregar la p\u00e1gina a un invitado. Desafortunadamente, la aritm\u00e9tica en los asistentes puede desbordarse y entonces se omitir\u00eda la limpieza/invalidaci\u00f3n de la cach\u00e9. Por lo tanto, no hay garant\u00eda de cu\u00e1ndo todas las escrituras llegar\u00e1n a la memoria."}], "lastModified": "2024-01-11T17:08:05.690", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:*", "vulnerable": true, "matchCriteriaId": "9E211AB0-41AD-40D0-AF03-D285F42C6163", "versionEndIncluding": "4.16"}], "operator": "OR"}]}], "sourceIdentifier": "security@xen.org"}