CVE-2019-1468 — Win32k Graphics Remote Code Execution Vulnerability
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
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
EPSS Score
Affected Products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows 10 for 32-bit Systems | 4530681 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 for x64-based Systems | 4530681 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1607 for 32-bit Systems | 4530689 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1607 for x64-based Systems | 4530689 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1709 for 32-bit Systems | 4530714 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1709 for ARM64-based Systems | 4530714 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1709 for x64-based Systems | 4530714 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1803 for 32-bit Systems | 4530717 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1803 for ARM64-based Systems | 4530717 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1803 for x64-based Systems | 4530717 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1809 for 32-bit Systems | 4530715 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1809 for ARM64-based Systems | 4530715 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1809 for x64-based Systems | 4530715 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1903 for 32-bit Systems | 4530684 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1903 for ARM64-based Systems | 4530684 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1903 for x64-based Systems | 4530684 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1909 for 32-bit Systems | 4530684 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1909 for ARM64-based Systems | 4530684 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1909 for x64-based Systems | 4530684 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 7 for 32-bit Systems Service Pack 1 4530734 (Monthly Rollup) 4530692 (Security Only) Critical Remote Code Execution 4525235 Base: 8.4 Temporal: 7.6 Vector: CVSS:3.0/AV:L/AC:L/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 4530734 (Monthly Rollup) 4530692 (Security Only) Critical Remote Code Execution 4525235 Base: 8.4 Temporal: 7.6 Vector: CVSS:3.0/AV:L/AC:L/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 4530702 (Monthly Rollup) 4530730 (Security Only) Critical Remote Code Execution 4525243 Base: 8.4 Temporal: 7.6 Vector: CVSS:3.0/AV:L/AC:L/PR:N/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 4530702 (Monthly Rollup) 4530730 (Security Only) Critical Remote Code Execution 4525243 Base: 8.4 Temporal: 7.6 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows RT 8.1 | 4530702 (Monthly Rollup) |
Critical | Remote Code Execution | Yes |
| Windows Server 2008 for 32-bit Systems Service Pack 2 4530695 (Monthly Rollup) 4530719 (Security Only) Critical Remote Code Execution 4525234 Base: 8.4 Temporal: 7.6 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 4530695 (Monthly Rollup) 4530719 (Security Only) Critical Remote Code Execution 4525234 Base: 8.4 Temporal: 7.6 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2008 for Itanium-Based Systems Service Pack 2 4530695 (Monthly Rollup) 4530719 (Security Only) Critical Remote Code Execution 4525234 Base: 8.4 Temporal: 7.6 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2008 for x64-based Systems Service Pack 2 4530695 (Monthly Rollup) 4530719 (Security Only) Critical Remote Code Execution 4525234 Base: 8.4 Temporal: 7.6 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 4530695 (Monthly Rollup) 4530719 (Security Only) Critical Remote Code Execution 4525234 Base: 8.4 Temporal: 7.6 Vector: CVSS:3.0/AV:L/AC:L/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 Itanium-Based Systems Service Pack 1 4530734 (Monthly Rollup) 4530692 (Security Only) Critical Remote Code Execution 4525235 Base: 8.4 Temporal: 7.6 Vector: CVSS:3.0/AV:L/AC:L/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 4530734 (Monthly Rollup) 4530692 (Security Only) Critical Remote Code Execution 4525235 Base: 8.4 Temporal: 7.6 Vector: CVSS:3.0/AV:L/AC:L/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) 4530734 (Monthly Rollup) 4530692 (Security Only) Critical Remote Code Execution 4525235 Base: 8.4 Temporal: 7.6 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2012 4530691 (Monthly Rollup) 4530698 (Security Only) Critical Remote Code Execution 4525246 Base: 8.4 Temporal: 7.6 Vector: CVSS:3.0/AV:L/AC:L/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) 4530691 (Monthly Rollup) 4530698 (Security Only) Critical Remote Code Execution 4525246 Base: 8.4 Temporal: 7.6 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2012 R2 4530702 (Monthly Rollup) 4530730 (Security Only) Critical Remote Code Execution 4525243 Base: 8.4 Temporal: 7.6 Vector: CVSS:3.0/AV:L/AC:L/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) 4530702 (Monthly Rollup) 4530730 (Security Only) Critical Remote Code Execution 4525243 Base: 8.4 Temporal: 7.6 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2016 | 4530689 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2016 (Server Core installation) | 4530689 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2019 | 4530715 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2019 (Server Core installation) | 4530715 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server, version 1803 (Server Core Installation) | 4530717 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server, version 1903 (Server Core installation) | 4530684 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server, version 1909 (Server Core installation) | 4530684 (Security Update) |
Critical | Remote Code Execution | Yes |
Patches
| Article | Type | Restart |
|---|---|---|
4530681 |
Security Update | Yes |
4530689 |
Security Update | Yes |
4530714 |
Security Update | Yes |
4530717 |
Security Update | Yes |
4530715 |
Security Update | Yes |
4530684 |
Security Update | Yes |
4530702 |
Monthly Rollup | Yes |
Known Exploits
Acknowledgments
xina1i of Antiy Labs
riusksk of VulWar Corp working with Trend Micro's Zero Day Initiative