Attacker Value
Low
CVE-2020-0791
CVE-2020-0791
(Last updated July 24, 2020) ▾
MITRE ATT&CK
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Description
An elevation of privilege vulnerability exists when the Windows Graphics Component improperly handles objects in memory, aka ‘Windows Graphics Component Elevation of Privilege Vulnerability’. This CVE ID is unique from CVE-2020-0898.
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2
Technical Analysis
An out of bounds dereference exists within the kernel-mode function win32kfull!vStrWrite01 that can be triggered from user-mode by calling gdi32!StretchBlt with a specially sized canvas and a specific raster operation (SRCERASE).
StretchBlt(hdc, 0x0, 0x2, 0x100, 0x1, hdc, 0x0, 0x0, 0x400, 0x8000, SRCERASE)
The vulnerability could be leveraged as an information leak.
CVSS V3 Severity and Metrics
Data provided by the National Vulnerability Database (NVD)
Base Score:
7.8 High
Impact Score:
5.9
Exploitability Score:
1.8
Attack Vector (AV):
Local
Attack Complexity (AC):
Low
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High
General Information
Vendors
- Microsoft
Products
- Windows,
- Windows Server,
- Windows 10 Version 1909 for 32-bit Systems,
- Windows 10 Version 1909 for x64-based Systems,
- Windows 10 Version 1909 for ARM64-based Systems,
- Windows Server, version 1909 (Server Core installation),
- Windows 10 Version 1903 for 32-bit Systems,
- Windows 10 Version 1903 for x64-based Systems,
- Windows 10 Version 1903 for ARM64-based Systems,
- Windows Server, version 1903 (Server Core installation)
