NVD

CVE-2017-12188 Detail

Modified

This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.

Current Description

The Linux kernel built with the KVM visualization support (CONFIG_KVM), with nested visualization(nVMX) feature enabled (nested=1), was vulnerable to a stack buffer overflow issue. The vulnerability could occur while traversing guest page table entries to resolve guest virtual address(gva). An L1 guest could use this flaw to crash the host kernel resulting in denial of service (DoS) or potentially execute arbitrary code on the host to gain privileges on the system.

View Analysis Description

Severity

CVSS 3.x Severity and Metrics:

NIST: NVD

Base Score: 7.8 HIGH

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Nist CVSS score does not match with CNA score

CNA: Red Hat, Inc.

Base Score: 7.6 HIGH

Vector: CVSS:3.0/AV:A/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
http://www.securityfocus.com/bid/101267	Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:0395
https://access.redhat.com/errata/RHSA-2018:0412
https://access.redhat.com/security/cve/CVE-2017-12188
https://bugzilla.redhat.com/show_bug.cgi?id=1500380	Issue Tracking Patch Third Party Advisory
https://patchwork.kernel.org/patch/9996579/	Issue Tracking Patch Vendor Advisory
https://patchwork.kernel.org/patch/9996587/	Issue Tracking Patch Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-22	Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')	NIST

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Change History

5 change records found show changes

CVE Modified by Red Hat, Inc. 2/02/2023 4:17:33 PM

Action	Type	Old Value	New Value
Added	CVSS V2		Red Hat, Inc. (AV:A/AC:H/Au:S/C:C/I:C/A:C)
Added	CVSS V3		Red Hat, Inc. AV:A/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Removed	CWE	Red Hat, Inc. CWE-121
Removed	CWE Reason	CWE-121 / Assessment performed prior to CVMAP efforts
Changed	Description	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."	The Linux kernel built with the KVM visualization support (CONFIG_KVM), with nested visualization(nVMX) feature enabled (nested=1), was vulnerable to a stack buffer overflow issue. The vulnerability could occur while traversing guest page table entries to resolve guest virtual address(gva). An L1 guest could use this flaw to crash the host kernel resulting in denial of service (DoS) or potentially execute arbitrary code on the host to gain privileges on the system.
Added	Reference		https://access.redhat.com/security/cve/CVE-2017-12188 [No Types Assigned]

Initial Analysis by NIST 11/03/2017 1:39:17 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		OR cpe:2.3:o:linux:linux_kernel:4.13.5::::::: (and previous)
Added	CVSS V2		(AV:L/AC:M/Au:N/C:C/I:C/A:C)
Added	CVSS V3		AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Added	CWE		CWE-22
Changed	Reference Type	http://www.securityfocus.com/bid/101267 No Types Assigned	http://www.securityfocus.com/bid/101267 Third Party Advisory, VDB Entry
Changed	Reference Type	https://bugzilla.redhat.com/show_bug.cgi?id=1500380 No Types Assigned	https://bugzilla.redhat.com/show_bug.cgi?id=1500380 Issue Tracking, Patch, Third Party Advisory
Changed	Reference Type	https://patchwork.kernel.org/patch/9996579/ No Types Assigned	https://patchwork.kernel.org/patch/9996579/ Issue Tracking, Patch, Vendor Advisory
Changed	Reference Type	https://patchwork.kernel.org/patch/9996587/ No Types Assigned	https://patchwork.kernel.org/patch/9996587/ Issue Tracking, Patch, Vendor Advisory

Quick Info

CVE Dictionary Entry:
CVE-2017-12188
NVD Published Date:
10/11/2017
NVD Last Modified:
02/02/2023
Source:
Red Hat, Inc.

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