OnlyPatch
Windows Kernel

CVE-2018-8134 — Windows Elevation of Privilege Vulnerability

Important CVSS 7 2018-05 archive

Executive Summary

An elevation of privilege vulnerability exists in the way that the Windows Kernel API enforces permissions. An attacker who successfully exploited the vulnerability could impersonate processes, interject cross-process communication, or interrupt system functionality. To exploit the vulnerability, a locally authenticated attacker could run a specially crafted application. The security update addresses the vulnerability by helping to ensure that the Windows Kernel API properly enforces permissions.

Overview

7
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
More Likely
MS Exploit Likelihood
Category Elevation of Privilege
Released May 8 2018
Last Updated May 8 2018
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known

CVSS Vector

ATTACK VECTOR
Local
ATTACK COMPLEXITY
High
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Proof-of-Concept
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 6.3

EPSS Score

No EPSS score available for this CVE.

View on FIRST.org

Affected Products

15 affected products
Product KB Article Severity Impact Restart Required
Windows 10 for 32-bit Systems 4103716 (Security Update) Important Elevation of Privilege Yes
Windows 10 for x64-based Systems 4103716 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1607 for 32-bit Systems 4103723 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1607 for x64-based Systems 4103723 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1703 for 32-bit Systems 4103731 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1703 for x64-based Systems 4103731 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1709 for 32-bit Systems 4103727 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1709 for x64-based Systems 4103727 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1803 for 32-bit Systems 4103721 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1803 for x64-based Systems 4103721 (Security Update) Important Elevation of Privilege Yes
Windows 8.1 for 32-bit systems 4103725 (Monthly Rollup) 4103715 (Security Only) Important Elevation of Privilege 4093114 Base: 7.0 Temporal: 6.3 Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows 8.1 for x64-based systems 4103725 (Monthly Rollup) 4103715 (Security Only) Important Elevation of Privilege 4093114 Base: 7.0 Temporal: 6.3 Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows RT 8.1 4103725 (Monthly Rollup) Important Elevation of Privilege Yes
Windows Server 2012 R2 4103725 (Monthly Rollup) 4103715 (Security Only) Important Elevation of Privilege 4093114 Base: 7.0 Temporal: 6.3 Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2012 R2 (Server Core installation) 4103725 (Monthly Rollup) 4103715 (Security Only) Important Elevation of Privilege 4093114 Base: 7.0 Temporal: 6.3 Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2016 4103723 (Security Update) Important Elevation of Privilege Yes
Windows Server 2016 (Server Core installation) 4103723 (Security Update) Important Elevation of Privilege Yes
Windows Server, version 1709 (Server Core Installation) 4103727 (Security Update) Important Elevation of Privilege Yes
Windows Server, version 1803 (Server Core Installation) 4103721 (Security Update) Important Elevation of Privilege Yes

Patches

6 patches
Article Type Restart
4103716 Security Update Yes
4103723 Security Update Yes
4103731 Security Update Yes
4103727 Security Update Yes
4103721 Security Update Yes
4103725 Monthly Rollup Yes

Known Exploits

Acknowledgments

James Forshaw of Google Project Zero

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