Attacker Value
Low
(1 user assessed)
Exploitability
Low
(1 user assessed)
User Interaction
None
Privileges Required
Low
Attack Vector
Local
0

CVE-2020-0791

Disclosure Date: March 12, 2020
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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
Ratings
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.

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)

Additional Info

Technical Analysis