“BatBadBut” Bug Bites: Critical Windows Injection

A critical Windows vulnerability (CVE-2024-24576), nicknamed “BatBadBut,” has been discovered. This vulnerability allows for command injection through the improper handling of batch files. Exploitation could lead to system compromise. Given the severity of this threat, swift and decisive measures are imperative to mitigate potential risks and safeguard your systems and data. Our Cyber security team has prepared a detailed advisory describing the vulnerability, risks, and steps to mitigate them effectively. 

What is “BatBadBut” Vulnerability 

The BatBadBut Vulnerability is a critical flaw affecting the handling of batch files (bat and cmd extensions) on Windows platforms across various programming languages/ technologies. It allows attackers to execute arbitrary shell commands by bypassing the escaping mechanism. This vulnerability may also affect the application that executes commands without specifying the file extension. 

Background of Vulnerability 

Flatt Security has discovered a critical vulnerability called BatBadBut “bad, but not the worst” that could allow attackers to inject malicious commands into Windows applications. The flaw, discovered by Flatt Security’s security engineer RyotaK, affects multiple programming languages. It was reported to the CERT Coordination Center and registered as CVE2024-24576 on GitHub with a severity score of 10.0.