CVE-2020-0744 — Windows GDI Information Disclosure Vulnerability
Executive Summary
An information disclosure vulnerability exists in the way that the Windows Graphics Device Interface (GDI) handles objects in memory, allowing an attacker to retrieve information from a targeted system. By itself, the information disclosure does not allow arbitrary code execution; however, it could allow arbitrary code to be run if the attacker uses it in combination with another vulnerability. To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted application. The security update addresses the vulnerability by correcting how GDI handles memory addresses.
Overview
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
EPSS Score
Affected Products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows 10 for 32-bit Systems | 4537776 (Security Update) |
Important | Information Disclosure | Yes |
| Windows 10 for x64-based Systems | 4537776 (Security Update) |
Important | Information Disclosure | Yes |
| Windows 10 Version 1607 for 32-bit Systems | 4537764 (Security Update) |
Important | Information Disclosure | Yes |
| Windows 10 Version 1607 for x64-based Systems | 4537764 (Security Update) |
Important | Information Disclosure | Yes |
| Windows 10 Version 1709 for 32-bit Systems | 4537789 (Security Update) |
Important | Information Disclosure | Yes |
| Windows 10 Version 1709 for ARM64-based Systems | 4537789 (Security Update) |
Important | Information Disclosure | Yes |
| Windows 10 Version 1709 for x64-based Systems | 4537789 (Security Update) |
Important | Information Disclosure | Yes |
| Windows 10 Version 1803 for 32-bit Systems | 4537762 (Security Update) |
Important | Information Disclosure | Yes |
| Windows 10 Version 1803 for ARM64-based Systems | 4537762 (Security Update) |
Important | Information Disclosure | Yes |
| Windows 10 Version 1803 for x64-based Systems | 4537762 (Security Update) |
Important | Information Disclosure | Yes |
| Windows 10 Version 1809 for 32-bit Systems | 4532691 (Security Update) |
Important | Information Disclosure | Yes |
| Windows 10 Version 1809 for ARM64-based Systems | 4532691 (Security Update) |
Important | Information Disclosure | Yes |
| Windows 10 Version 1809 for x64-based Systems | 4532691 (Security Update) |
Important | Information Disclosure | Yes |
| Windows 10 Version 1903 for 32-bit Systems | 4532693 (Security Update) |
Important | Information Disclosure | Yes |
| Windows 10 Version 1903 for ARM64-based Systems | 4532693 (Security Update) |
Important | Information Disclosure | Yes |
| Windows 10 Version 1903 for x64-based Systems | 4532693 (Security Update) |
Important | Information Disclosure | Yes |
| Windows 10 Version 1909 for 32-bit Systems | 4532693 (Security Update) |
Important | Information Disclosure | Yes |
| Windows 10 Version 1909 for ARM64-based Systems | 4532693 (Security Update) |
Important | Information Disclosure | Yes |
| Windows 10 Version 1909 for x64-based Systems | 4532693 (Security Update) |
Important | Information Disclosure | Yes |
| Windows 7 for 32-bit Systems Service Pack 1 4537820 (Monthly Rollup) 4537813 (Security Only) Important Information Disclosure 4534310 Base: 5.5 Temporal: 5.0 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes 4537813 Windows 7 for x64-based Systems Service Pack 1 4537820 (Monthly Rollup) 4537813 (Security Only) Important Information Disclosure 4534310 Base: 5.5 Temporal: 5.0 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes 4537813 Windows 8.1 for 32-bit systems 4537821 (Monthly Rollup) 4537803 (Security Only) Important Information Disclosure 4534297 Base: 5.5 Temporal: 5.0 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes 4537821 4537803 4537821 Windows 8.1 for x64-based systems 4537821 (Monthly Rollup) 4537803 (Security Only) Important Information Disclosure 4534297 Base: 5.5 Temporal: 5.0 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes 4537821 4537803 4537821 Windows RT 8.1 | 4537821 (Monthly Rollup) |
Important | Information Disclosure | Yes |
| Windows Server 2008 for 32-bit Systems Service Pack 2 4537810 (Monthly Rollup) 4537822 (Security Only) Important Information Disclosure 4534303 Base: 5.5 Temporal: 5.0 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes None Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 4537810 (Monthly Rollup) 4537822 (Security Only) Important Information Disclosure 4534303 Base: 5.5 Temporal: 5.0 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes None Windows Server 2008 for x64-based Systems Service Pack 2 4537810 (Monthly Rollup) 4537822 (Security Only) Important Information Disclosure 4534303 Base: 5.5 Temporal: 5.0 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes None Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 4537810 (Monthly Rollup) 4537822 (Security Only) Important Information Disclosure 4534303 Base: 5.5 Temporal: 5.0 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes None Windows Server 2008 R2 for x64-based Systems Service Pack 1 4537820 (Monthly Rollup) 4537813 (Security Only) Important Information Disclosure 4534310 Base: 5.5 Temporal: 5.0 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes 4537813 Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 4537820 (Monthly Rollup) 4537813 (Security Only) Important Information Disclosure 4534310 Base: 5.5 Temporal: 5.0 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes 4537813 Windows Server 2012 4537814 (Monthly Rollup) 4537794 (Security Only) Important Information Disclosure 4534283 Base: 5.5 Temporal: 5.0 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes 4537814 4537794 Windows Server 2012 (Server Core installation) 4537814 (Monthly Rollup) 4537794 (Security Only) Important Information Disclosure 4534283 Base: 5.5 Temporal: 5.0 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes 4537814 4537794 Windows Server 2012 R2 4537821 (Monthly Rollup) 4537803 (Security Only) Important Information Disclosure 4534297 Base: 5.5 Temporal: 5.0 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes 4537821 4537803 4537821 Windows Server 2012 R2 (Server Core installation) 4537821 (Monthly Rollup) 4537803 (Security Only) Important Information Disclosure 4534297 Base: 5.5 Temporal: 5.0 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes 4537821 4537803 4537821 Windows Server 2016 | 4537764 (Security Update) |
Important | Information Disclosure | Yes |
| Windows Server 2016 (Server Core installation) | 4537764 (Security Update) |
Important | Information Disclosure | Yes |
| Windows Server 2019 | 4532691 (Security Update) |
Important | Information Disclosure | Yes |
| Windows Server 2019 (Server Core installation) | 4532691 (Security Update) |
Important | Information Disclosure | Yes |
| Windows Server, version 1803 (Server Core Installation) | 4537762 (Security Update) |
Important | Information Disclosure | Yes |
| Windows Server, version 1903 (Server Core installation) | 4532693 (Security Update) |
Important | Information Disclosure | Yes |
| Windows Server, version 1909 (Server Core installation) | 4532693 (Security Update) |
Important | Information Disclosure | Yes |
Patches
| Article | Type | Restart |
|---|---|---|
4537776 |
Security Update | Yes |
4537764 |
Security Update | Yes |
4537789 |
Security Update | Yes |
4537762 |
Security Update | Yes |
4532691 |
Security Update | Yes |
4532693 |
Security Update | Yes |
4537821 |
Monthly Rollup | Yes |
Known Exploits
Acknowledgments
Simon Barsky @expend20, Wenguang Jiao of Qihoo 360 CoreSecurity, xina1i of Anity Lab, Trend Micro's Zero Day Initiative, @hardik05, Ke Liu, Pen Test Partners LLP