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CVE-2017-7518 Detail

Description

A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flag(TF) bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exception(#DB) being raised in the guest stack. A user/process inside a guest could use this flaw to potentially escalate their privileges inside the guest. Linux guests are not affected by this.


Metrics

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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.openwall.com/lists/oss-security/2017/06/23/5 Mailing List  Patch  Third Party Advisory 
http://www.securityfocus.com/bid/99263 Third Party Advisory  VDB Entry 
http://www.securitytracker.com/id/1038782 Third Party Advisory  VDB Entry 
https://access.redhat.com/articles/3290921 Permissions Required  Third Party Advisory 
https://access.redhat.com/errata/RHSA-2018:0395 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2018:0412 Third Party Advisory 
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7518 Issue Tracking  Patch  Third Party Advisory 
https://usn.ubuntu.com/3619-1/ Third Party Advisory 
https://usn.ubuntu.com/3619-2/ Third Party Advisory 
https://usn.ubuntu.com/3754-1/ Third Party Advisory 
https://www.debian.org/security/2017/dsa-3981 Third Party Advisory 
https://www.spinics.net/lists/kvm/msg151817.html Mailing List  Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-755 Improper Handling of Exceptional Conditions cwe source acceptance level NIST  
CWE-250 Execution with Unnecessary Privileges Red Hat, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

8 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-7518
NVD Published Date:
07/30/2018
NVD Last Modified:
11/06/2023
Source:
Red Hat, Inc.