CVE-2017-12188

arch/x86/kvm/mmu.c in the Linux kernel through 4.13.5, when nested virtualisation is used, does not properly traverse guest pagetable entries to resolve a guest virtual address, which allows L1 guest OS users to execute arbitrary code on the host OS or cause a denial of service (incorrect index during page walking, and host OS crash), aka an "MMU potential stack buffer overrun."

CVSS v3.0 7.8 HIGH
CVSS v2.0 6.9 MEDIUM

7.8^/10

CVSS v3.0 : HIGH

Vector : AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Exploitability : 1.1 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

6.9^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 3.4 / Impact : 10.0

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://patchwork.kernel.org/patch/9996587/	Issue Tracking Patch Vendor Advisory
https://patchwork.kernel.org/patch/9996579/	Issue Tracking Patch Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1500380	Issue Tracking Patch Third Party Advisory
http://www.securityfocus.com/bid/101267	Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:0412
https://access.redhat.com/errata/RHSA-2018:0395

Configurations

Configuration 1 (hide)

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

Information

Published : 2017-10-11 15:29

Updated : 2018-03-08 02:29

NVD link : CVE-2017-12188

Mitre link : CVE-2017-12188

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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