CVE-2020-37043: 10-Strike Bandwidth Monitor RCE Flaw

CVE-2020-37043 Overview

CVE-2020-37043 is a buffer overflow vulnerability affecting 10-Strike Bandwidth Monitor version 3.9. This security flaw allows attackers to bypass multiple memory protection mechanisms including SafeSEH, ASLR, and DEP through carefully crafted input. The vulnerability exists in the application's registration key input handling, where malicious payloads can trigger remote code execution and enable attackers to launch arbitrary system commands on affected systems.

Critical Impact

Successful exploitation enables attackers to execute arbitrary code on vulnerable systems, potentially leading to complete system compromise through bypass of multiple security protections.

Affected Products

• 10-Strike Bandwidth Monitor 3.9
• Earlier versions may also be affected

Discovery Timeline

• 2026-01-30 - CVE CVE-2020-37043 published to NVD
• 2026-02-03 - Last updated in NVD database

Technical Details for CVE-2020-37043

Vulnerability Analysis

This vulnerability is classified as CWE-120 (Buffer Copy without Checking Size of Input), commonly known as a classic buffer overflow. The vulnerability requires local access and user interaction to exploit, but does not require any special privileges. When successfully exploited, attackers can achieve high impact across confidentiality, integrity, and availability of the target system.

The application fails to properly validate the length of user-supplied input in the registration key field before copying it to a fixed-size buffer. This oversight allows an attacker to craft a malicious input that overflows the buffer boundary, corrupting adjacent memory and potentially overwriting critical control structures such as return addresses or exception handlers.

Root Cause

The root cause of CVE-2020-37043 is improper input validation in the registration key handling functionality. The application allocates a fixed-size buffer for the registration key but does not verify that user input fits within this boundary before performing the copy operation. This classic buffer overflow pattern (CWE-120) results from missing bounds checking, allowing attackers to write beyond the intended memory region.

Attack Vector

The attack vector for this vulnerability is local, requiring an attacker to deliver malicious input to the registration key field of the application. Despite the presence of security mitigations like SafeSEH, ASLR, and DEP, the vulnerability allows these protections to be bypassed through carefully constructed exploit payloads.

The exploitation process typically involves:

1. Crafting a payload that exceeds the buffer's allocated size
2. Including shellcode or ROP gadgets to bypass DEP protection
3. Leveraging techniques to defeat ASLR and SafeSEH protections
4. Triggering the buffer overflow through the registration key input
5. Achieving code execution when the corrupted control flow is redirected to attacker-controlled code

Technical details and proof-of-concept information are available through the Exploit-DB #48570 advisory.

Detection Methods for CVE-2020-37043

Indicators of Compromise

• Unusual crashes or memory access violations in 10-Strike Bandwidth Monitor processes
• Unexpected child processes spawned by the Bandwidth Monitor application
• Anomalous registry or file system modifications following application execution
• Evidence of shellcode execution patterns in process memory

Detection Strategies

• Monitor for buffer overflow indicators such as stack smashing detection alerts
• Implement application-level monitoring for suspicious input to registration dialogs
• Deploy endpoint detection rules targeting known buffer overflow exploitation techniques
• Use behavior-based detection to identify anomalous process execution chains originating from Bandwidth Monitor

Monitoring Recommendations

• Enable crash dump collection for the 10-Strike Bandwidth Monitor application to capture exploitation attempts
• Monitor system event logs for application crashes with memory corruption signatures
• Implement file integrity monitoring on the application installation directory
• Track process creation events from the Bandwidth Monitor executable

How to Mitigate CVE-2020-37043

Immediate Actions Required

• Restrict access to the 10-Strike Bandwidth Monitor application to trusted users only
• Consider network isolation for systems running vulnerable versions
• Implement application whitelisting to prevent unauthorized code execution
• Review and audit any systems where this software is deployed for signs of compromise

Patch Information

Organizations should check with 10-Strike Software for updated versions that address this buffer overflow vulnerability. Visit the 10-Strike Bandwidth Monitor product page for the latest security updates and version information. The VulnCheck Advisory provides additional technical guidance.

Workarounds

• Limit application access to trusted administrators only until a patch is available
• Run the application in a sandboxed or isolated environment to contain potential exploitation
• Disable or remove the software if it is not business-critical
• Implement endpoint protection solutions with exploit mitigation capabilities to detect and block buffer overflow attacks