Buffer Overflow in TP-Link TL-WR841N HTTP Service

Executive Summary

This vulnerability is a buffer overflow in the embedded HTTP service of TL-WR841N v14 routers. It occurs when processing multipart/form-data requests due to insufficient validation of an attacker-controlled boundary parameter. This allows a remote unauthenticated attacker to submit a crafted request that corrupts memory by overwriting data beyond an internal buffer's bounds.

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Detection Guidance

This vulnerability involves a buffer overflow in the embedded HTTP service of TL-WR841N v14 when processing multipart/form-data requests. Detection may involve monitoring for unusual network traffic patterns or crashes in the device's HTTP service. No specific commands are provided in the context.

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Impact Analysis

Exploitation may lead to modification or corruption of process memory, causing undefined application behavior. While arbitrary code execution, information disclosure, and denial-of-service conditions have not been demonstrated, memory corruption could still disrupt router functionality or lead to instability.

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Compliance Impact

This vulnerability may lead to information disclosure or memory corruption, which could result in unauthorized access to sensitive data. This could potentially violate GDPR's data protection requirements or HIPAA's safeguards for protected health information if exploited.

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Mitigation Strategies

Update the TL-WR841N v14 firmware to the latest version provided by TP-Link to address the buffer overflow vulnerability in the embedded HTTP service.

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