Vulnerabilities > CVE-2020-17087 - Incorrect Calculation of Buffer Size vulnerability in Microsoft products

Attack vector

LOCAL

Attack complexity

LOW

Privileges required

LOW

Confidentiality impact

HIGH

Integrity impact

HIGH

Availability impact

HIGH

local

low complexity

NVD

Published: 2020-11-11

Updated: 2024-02-15

Summary

Windows Kernel Local Elevation of Privilege Vulnerability

Part	Description	Count
OS	Microsoft Microsoft Windows Server 2012 R2 Microsoft Windows Server 2012 - Microsoft Windows 10 1607 Microsoft Windows 10 - Microsoft Windows 10 1803 Microsoft Windows 10 1809 Microsoft Windows 10 1903 Microsoft Windows 10 1909 Microsoft Windows 10 2004 Microsoft Windows 10 20H2 Microsoft Windows 8.1 - Microsoft Windows Server 2016 - Microsoft Windows Server 2016 1903 Microsoft Windows Server 2016 1909 Microsoft Windows Server 2016 2004 Microsoft Windows Server 2016 20H2 Microsoft Windows 7 - Microsoft Windows Server 2008 - Microsoft Windows Server 2008 R2 Microsoft Windows RT 8.1 - Microsoft Windows Server 2019 -	22

Overflow Buffers
Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
Buffer Overflow via Parameter Expansion
In this attack, the target software is given input that the attacker knows will be modified and expanded in size during processing. This attack relies on the target software failing to anticipate that the expanded data may exceed some internal limit, thereby creating a buffer overflow.