Green Dam Youth Escort Stack-Based Buffer Overflow Vulnerability Allowing Arbitrary Code Execution

A stack-based buffer overflow vulnerability has been identified in Green Dam Youth Escort version 3.17. This issue arises in the URL filtering component, which improperly validates the length of user-supplied data before copying it into a fixed-size buffer. As a result, a remote attacker can exploit this vulnerability by persuading a user to visit a specially crafted webpage with an excessively long URL, leading to arbitrary code execution.

Impact

Exploitation of this vulnerability allows for arbitrary code execution on the affected system.

Reproduction

The vulnerability can be reproduced by visiting a webpage that contains a long URL. This can be done by uploading a .NET assembly that exploits the buffer overflow vulnerability into a web application, such as an Internet Information Services (IIS) server, and then accessing the page with a vulnerable browser. The .NET assembly will bypass security mechanisms and execute the payload, demonstrating the vulnerability.

Remediation

Users can uninstall Green Dam Youth Escort using the software's uninstaller, which effectively removes most components of the program.