OnlyPatch
Microsoft Graphics Component

CVE-2018-8332 — Win32k Graphics Remote Code Execution Vulnerability

Critical CVSS 8.8 2018-09 archive

Executive Summary

A remote code execution vulnerability exists when the Windows font library improperly handles specially crafted embedded fonts. An attacker who successfully exploited this vulnerability could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. There are multiple ways an attacker could exploit this vulnerability. In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit this vulnerability and then convince a user to view the website. An attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action, typically by getting them to click a link in an email message or in an Instant Messenger message that takes users to the attacker's website, or by opening an attachment sent through email. In a file sharing attack scenario, an attacker could provide a specially crafted document file that is designed to exploit this vulnerability, and then convince a user to open the document file. The security update addresses the vulnerability by correcting how the Windows font library handles embedded fonts.

Overview

8.8
CVSS HIGH
Critical
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Remote Code Execution
Released Sep 11 2018
Last Updated Sep 11 2018
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known

CVSS Vector

ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
Temporal Score: 8.8

EPSS Score

No EPSS score available for this CVE.

View on FIRST.org

Affected Products

18 affected products
Product KB Article Severity Impact Restart Required
Microsoft Office 2016 Click-to-Run (C2R) for 32-bit editions Click to Run (Security Update) Critical Remote Code Execution No
Microsoft Office 2016 Click-to-Run (C2R) for 64-bit editions Click to Run (Security Update) Critical Remote Code Execution No
Microsoft Office 2016 for Mac Release Notes (Security Update) Critical Remote Code Execution No
Windows 10 for 32-bit Systems 4457132 (Security Update) Critical Remote Code Execution Yes
Windows 10 for x64-based Systems 4457132 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1607 for 32-bit Systems 4457131 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1607 for x64-based Systems 4457131 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1703 for 32-bit Systems 4457138 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1703 for x64-based Systems 4457138 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1709 for 32-bit Systems 4457142 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1709 for x64-based Systems 4457142 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1803 for 32-bit Systems 4457128 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1803 for x64-based Systems 4457128 (Security Update) Critical Remote Code Execution Yes
Windows 7 for 32-bit Systems Service Pack 1 4457144 (Monthly Rollup) 4457145 (Security Only) Critical Remote Code Execution 4343900 Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Yes None Windows 7 for x64-based Systems Service Pack 1 4457144 (Monthly Rollup) 4457145 (Security Only) Critical Remote Code Execution 4343900 Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Yes None Windows 8.1 for 32-bit systems 4457129 (Monthly Rollup) 4457143 (Security Only) Critical Remote Code Execution 4343898 Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Yes None Windows 8.1 for x64-based systems 4457129 (Monthly Rollup) 4457143 (Security Only) Critical Remote Code Execution 4343898 Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Yes None Windows RT 8.1 4457129 (Monthly Rollup) Critical Remote Code Execution Yes
Windows Server 2008 for 32-bit Systems Service Pack 2 4458010 (Monthly Rollup) 4457984 (Security Only) Critical Remote Code Execution Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Yes None Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 4458010 (Monthly Rollup) 4457984 (Security Only) Critical Remote Code Execution Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Yes None Windows Server 2008 for Itanium-Based Systems Service Pack 2 4458010 (Monthly Rollup) 4457984 (Security Only) Critical Remote Code Execution Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Yes None Windows Server 2008 for x64-based Systems Service Pack 2 4458010 (Monthly Rollup) 4457984 (Security Only) Critical Remote Code Execution Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Yes None Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 4458010 (Monthly Rollup) 4457984 (Security Only) Critical Remote Code Execution Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Yes None Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 4457144 (Monthly Rollup) 4457145 (Security Only) Critical Remote Code Execution 4343900 Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Yes None Windows Server 2008 R2 for x64-based Systems Service Pack 1 4457144 (Monthly Rollup) 4457145 (Security Only) Critical Remote Code Execution 4343900 Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Yes None Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 4457144 (Monthly Rollup) 4457145 (Security Only) Critical Remote Code Execution 4343900 Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Yes None Windows Server 2012 4457135 (Monthly Rollup) 4457140 (Security Only) Critical Remote Code Execution 4343901 Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Yes None Windows Server 2012 (Server Core installation) 4457135 (Monthly Rollup) 4457140 (Security Only) Critical Remote Code Execution 4343901 Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Yes None Windows Server 2012 R2 4457129 (Monthly Rollup) 4457143 (Security Only) Critical Remote Code Execution 4343898 Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Yes None Windows Server 2012 R2 (Server Core installation) 4457129 (Monthly Rollup) 4457143 (Security Only) Critical Remote Code Execution 4343898 Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Yes None Windows Server 2016 4457131 (Security Update) Critical Remote Code Execution Yes
Windows Server 2016 (Server Core installation) 4457131 (Security Update) Critical Remote Code Execution Yes
Windows Server, version 1709 (Server Core Installation) 4457142 (Security Update) Critical Remote Code Execution Yes
Windows Server, version 1803 (Server Core Installation) 4457128 (Security Update) Critical Remote Code Execution Yes

Patches

8 patches
Article Type Restart
Click to Run Security Update No
Release Notes Security Update No
4457132 Security Update Yes
4457131 Security Update Yes
4457138 Security Update Yes
4457142 Security Update Yes
4457128 Security Update Yes
4457129 Monthly Rollup Yes

Known Exploits

Acknowledgments

Hossein Lotfi, Secunia Research at Flexera

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