OnlyPatch
Windows Installer

CVE-2018-0868 — Windows Installer Elevation of Privilege Vulnerability

Important CVSS 7.4 2018-03 archive

Executive Summary

An elevation of privilege vulnerability exists in the Windows Installer when the Windows Installer fails to properly sanitize input leading to an insecure library loading behavior. A locally authenticated attacker could run arbitrary code with elevated system privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. The security update addresses the vulnerability by correcting the input sanitization error to preclude unintended elevation.

Overview

7.4
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Elevation of Privilege
Released Mar 13 2018
Last Updated Mar 13 2018
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known

CVSS Vector

ATTACK VECTOR
Local
ATTACK COMPLEXITY
High
PRIVILEGES REQUIRED
None
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: 6.7

EPSS Score

No EPSS score available for this CVE.

View on FIRST.org

Affected Products

19 affected products
Product KB Article Severity Impact Restart Required
Windows 10 for 32-bit Systems 4088786 (Security Update) Important Elevation of Privilege Yes
Windows 10 for x64-based Systems 4088786 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1511 for 32-bit Systems 4088779 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1511 for x64-based Systems 4088779 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1607 for 32-bit Systems 4088787 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1607 for x64-based Systems 4088787 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1703 for 32-bit Systems 4088782 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1703 for x64-based Systems 4088782 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1709 for 32-bit Systems 4088776 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1709 for x64-based Systems 4088776 (Security Update) Important Elevation of Privilege Yes
Windows 7 for 32-bit Systems Service Pack 1 4088875 (Monthly Rollup) 4088878 (Security Only) Important Elevation of Privilege 4074598 Base: 7.4 Temporal: 6.7 Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows 7 for x64-based Systems Service Pack 1 4088875 (Monthly Rollup) 4088878 (Security Only) Important Elevation of Privilege 4074598 Base: 7.4 Temporal: 6.7 Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows 8.1 for 32-bit systems 4088876 (Monthly Rollup) 4088879 (Security Only) Important Elevation of Privilege 4074594 Base: 7.4 Temporal: 6.7 Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows RT 8.1 4088876 (Monthly Rollup) Important Elevation of Privilege Yes
Windows Server 2008 for 32-bit Systems Service Pack 2 4087398 (Security Update) Important Elevation of Privilege Yes
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 4087398 (Security Update) Important Elevation of Privilege Yes
Windows Server 2008 for Itanium-Based Systems Service Pack 2 4087398 (Security Update) Important Elevation of Privilege Yes
Windows Server 2008 for x64-based Systems Service Pack 2 4087398 (Security Update) Important Elevation of Privilege Yes
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 4087398 (Security Update) Important Elevation of Privilege Yes
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 4088875 (Monthly Rollup) 4088878 (Security Only) Important Elevation of Privilege 4074598 Base: 7.4 Temporal: 6.7 Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2008 R2 for x64-based Systems Service Pack 1 4088875 (Monthly Rollup) 4088878 (Security Only) Important Elevation of Privilege 4074598 Base: 7.4 Temporal: 6.7 Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 4088875 (Monthly Rollup) 4088878 (Security Only) Important Elevation of Privilege 4074598 Base: 7.4 Temporal: 6.7 Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2012 4088877 (Monthly Rollup) 4088880 (Security Only) Important Elevation of Privilege 4074593 Base: 7.4 Temporal: 6.7 Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2012 (Server Core installation) 4088877 (Monthly Rollup) 4088880 (Security Only) Important Elevation of Privilege 4074593 Base: 7.4 Temporal: 6.7 Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2012 R2 4088876 (Monthly Rollup) 4088879 (Security Only) Important Elevation of Privilege 4074594 Base: 7.4 Temporal: 6.7 Vector: CVSS:3.0/AV:L/AC:H/PR:N/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) 4088876 (Monthly Rollup) 4088879 (Security Only) Important Elevation of Privilege 4074594 Base: 7.4 Temporal: 6.7 Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2016 4088787 (Security Update) Important Elevation of Privilege Yes
Windows Server 2016 (Server Core installation) 4088787 (Security Update) Important Elevation of Privilege Yes
Windows Server, version 1709 (Server Core Installation) 4088776 (Security Update) Important Elevation of Privilege Yes

Patches

7 patches
Article Type Restart
4088786 Security Update Yes
4088779 Security Update Yes
4088787 Security Update Yes
4088782 Security Update Yes
4088776 Security Update Yes
4088876 Monthly Rollup Yes
4087398 Security Update Yes

Known Exploits

Acknowledgments

Daniel Docherty of MWR Labs

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