CVE-2022-42327

x86: unintended memory sharing between guests On Intel systems that support the "virtualize APIC accesses" feature, a guest can read and write the global shared xAPIC page by moving the local APIC out of xAPIC mode. Access to this shared page bypasses the expected isolation that should exist between two guests.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
http://www.openwall.com/lists/oss-security/2022/11/01/3	Mailing List Patch Third Party Advisory
http://xenbits.xen.org/xsa/advisory-412.html	Patch Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ/
https://security.gentoo.org/glsa/202402-07
https://xenbits.xenproject.org/xsa/advisory-412.txt	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:xen:xen:4.16:*:*:*:*:*:x86:*

Configuration 2 (hide)

OR	cpe:2.3:o:fedoraproject:fedora:36:::::::*
	cpe:2.3:o:fedoraproject:fedora:37:::::::*

History

No history.

Information

Published : 2022-11-01 13:15

Updated : 2024-02-04 08:15

NVD link : CVE-2022-42327

Mitre link : CVE-2022-42327

CVE.ORG link : CVE-2022-42327

JSON object : View

Products Affected

xen

xen

fedoraproject

fedora

CWE

NVD-CWE-noinfo

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