CVE-2018-10901

A flaw was found in Linux kernel's KVM virtualization subsystem. The VMX code does not restore the GDT.LIMIT to the previous host value, but instead sets it to 64KB. With a corrupted GDT limit a host's userspace code has an ability to place malicious entries in the GDT, particularly to the per-cpu variables. An attacker can use this to escalate their privileges.

CVSS v3.0 7.8 HIGH
CVSS v2.0 7.2 HIGH

7.8^/10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.2^/10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:L/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3444d7da1839b851eefedd372978d8a982316c36	Patch Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10901	Issue Tracking Patch Third Party Advisory
http://www.securityfocus.com/bid/104905	Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:2394	Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2393	Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2392	Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2391	Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2390	Third Party Advisory
https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0	Third Party Advisory
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html	Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2020.html	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:redhat:enterprise_linux_server_aus:6.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_aus:6.5:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_aus:6.4:::::::*
	cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server:6.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:::::::*

Information

Published : 2018-07-26 10:29

Updated : 2023-02-24 10:43

NVD link : CVE-2018-10901

Mitre link : CVE-2018-10901

JSON object : View

CWE

NVD-CWE-noinfo

Products Affected

redhat

enterprise_linux_desktop
enterprise_linux_server_aus
enterprise_linux_workstation
enterprise_linux_server

linux

linux_kernel

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7.8 /10