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Vulnerability DatabaseCVE-2022-21876
CVE-2022-21876:
vulnerability analysis and mitigation
Overview
CVE-2022-21876 is a Win32k Information Disclosure vulnerability affecting Microsoft Windows DirectComposition. The vulnerability was reported to Microsoft on September 22, 2021, and was publicly disclosed on January 13, 2022 (ZDI Advisory).
Technical details
The vulnerability exists within DirectComposition and stems from improper validation of user-supplied data, which can result in an out-of-bounds read past the end of an allocated buffer. The vulnerability has been assigned a CVSS score of 5.5 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N), indicating moderate severity with local access required (ZDI Advisory).
Impact
This vulnerability allows local attackers to disclose sensitive information on affected installations of Microsoft Windows. An attacker who successfully exploits this vulnerability could leverage it to escalate privileges and execute arbitrary code in the context of the kernel (ZDI Advisory).
Mitigation and workarounds
Microsoft has released a security update to address this vulnerability. Users are advised to apply the available patches through the Microsoft update system (ZDI Advisory).
Additional resources
Source: This report was generated using AI
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