CVE-2023-21823 vulnerability in Microsoft Products
Published on February 14, 2023

Windows Graphics Component Remote Code Execution Vulnerability

Vendor Advisory Vendor Advisory NVD

Known Exploited Vulnerability

This Microsoft Windows Graphic Component Privilege Escalation Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Microsoft Windows Graphic Component contains an unspecified vulnerability which allows for privilege escalation.

The following remediation steps are recommended / required by March 7, 2023: Apply updates per vendor instructions.

Vulnerability Analysis

CVE-2023-21823 can be exploited with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. It has an exploitability score of 1.8 out of four. The potential impact of an exploit of this vulnerability is considered to be very high.

Integer Overflow or Wraparound

The software performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. An integer overflow or wraparound occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may wrap to become a very small or negative number. While this may be intended behavior in circumstances that rely on wrapping, it can have security consequences if the wrap is unexpected. This is especially the case if the integer overflow can be triggered using user-supplied inputs. This becomes security-critical when the result is used to control looping, make a security decision, or determine the offset or size in behaviors such as memory allocation, copying, concatenation, etc.

Products Associated with CVE-2023-21823

You can be notified by stack.watch whenever vulnerabilities like CVE-2023-21823 are published in these products:

Microsoft Windows Server 2008

Microsoft Windows Server 2012

Microsoft Windows Server 2016

Microsoft Windows Server 2019

Microsoft Windows Server 2022

Microsoft Windows 10

Microsoft Windows 10 1507

Microsoft Windows 11

What versions are vulnerable to CVE-2023-21823?