CVE-2017-12154 Detail

Current Description

The prepare_vmcs02 function in arch/x86/kvm/vmx.c in the Linux kernel through 4.13.3 does not ensure that the "CR8-load exiting" and "CR8-store exiting" L0 vmcs02 controls exist in cases where L1 omits the "use TPR shadow" vmcs12 control, which allows KVM L2 guest OS users to obtain read and write access to the hardware CR8 register.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  7.1 HIGH
Vector:  CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N


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Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=51aa68e7d57e3217192d88ce90fd5b8ef29ec94f Issue Tracking  Patch  Third Party Advisory 
http://www.debian.org/security/2017/dsa-3981
http://www.securityfocus.com/bid/100856 Third Party Advisory  VDB Entry 
https://access.redhat.com/errata/RHSA-2018:0676
https://access.redhat.com/errata/RHSA-2018:1062
https://access.redhat.com/errata/RHSA-2019:1946
https://bugzilla.redhat.com/show_bug.cgi?id=1491224 Issue Tracking  Patch  Third Party Advisory 
https://github.com/torvalds/linux/commit/51aa68e7d57e3217192d88ce90fd5b8ef29ec94f Issue Tracking  Patch  Third Party Advisory 
https://usn.ubuntu.com/3698-1/
https://usn.ubuntu.com/3698-2/
https://www.spinics.net/lists/kvm/msg155414.html Mailing List  Patch  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
NVD-CWE-noinfo Insufficient Information cwe source acceptance level NIST  

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Change History

8 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-12154
NVD Published Date:
09/26/2017
NVD Last Modified:
10/02/2019
Source:
MITRE