CVE-2024-3764: Potential Denial of Service Vulnerability in Tuya SDK

A vulnerability, identified as CVE-2024-3764, has been discovered in the Tuya Smart Home SDK versions up to 5..x, affecting the component MQTT Packet Handler. This vulnerability raises concerns about potential denial of service attacks that could be launched remotely. However, it's important to note that the existence of this vulnerability is currently disputed, and the vendor has provided some explanations to mitigate the potential threat. Upgrading to version 5.1. of the Tuya SDK is recommended to address this issue.

Exploit Details

The CVE-2024-3764 vulnerability was initially disclosed publicly, and the exploit itself may be used by attackers to potentially cause a denial of service within the affected MQTT Packet Handler component. This vulnerability has been classified as problematic, but it's important to keep in mind that there are some doubts regarding the actual existence or impact of this vulnerability.

A representation of the potentially vulnerable code in the MQTT Packet Handler

// The following code may be affected by CVE-2024-3764

void mqtt_packet_handler(/* ... */)
{
  // ...Handle MQTT Packet logic...
  
  // Vulnerable section
  
  // ... Potentially problematic code...
}

The original references for the CVE-2024-3764 vulnerability can be found in the following resources

1. Vulnerability Database - VDB-260604: This page provides an overview of the vulnerability, its affected components, and its classification.

2. Tuya Developer Portal - SDK 5.1. Release Notes: The release notes for the Tuya SDK 5.1. provide information related to the recommended upgrade to address the CVE-2024-3764 vulnerability.

Vendor Explanation

The vendor of the Tuya SDK has provided some context regarding the CVE-2024-3764 vulnerability. They explained that for a malicious actor to successfully exploit this vulnerability, they would first have to either crack the TLS (Transport Layer Security) encryption or use a legitimate login to initiate the attack. Both of these scenarios would require a significantly higher level of effort and resources, which may limit the potential impact of this vulnerability.

Recommended Actions

As the existence of this vulnerability is still in question, it is recommended to proceed with caution and upgrade the affected component to Tuya SDK version 5.1. to mitigate any potential risks. Staying up-to-date with the latest security patches and remaining informed about ongoing developments related to this vulnerability is also good practice.

Conclusion

While the CVE-2024-3764 vulnerability in the Tuya SDK remains disputed, it is still important for developers and users to be aware of potential risks and take appropriate action to protect their systems. By upgrading to Tuya SDK version 5.1. and following best security practices, you can help ensure the safety and integrity of your smart home devices and networks.

Timeline

Published on: 04/14/2024 23:15:46 UTC
Last modified on: 05/17/2024 02:40:06 UTC