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CVE-2024-42644: Assertion Failure in FlashMQ v1.14.0 Leads to System Compromise or Data Leakage

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Overview

The vulnerability, identified as CVE-2024-42644, is present in FlashMQ v1.14.0, a popular messaging and queuing software. This vulnerability is due to an assertion failure in the function PublishCopyFactory::getNewPublish. Attackers could exploit this vulnerability to potentially compromise the system or leak sensitive data. Given the widespread use of FlashMQ, this vulnerability poses a significant risk to numerous systems and data worldwide.

Vulnerability Summary

CVE ID: CVE-2024-42644
Severity: High (7.5)
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Impact: System Compromise or Data Leakage

Affected Products

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Product | Affected Versions

FlashMQ | v1.14.0

How the Exploit Works

The vulnerability exploits an assertion failure in the PublishCopyFactory::getNewPublish function of FlashMQ v1.14.0. When the Quality of Service (QoS) value of the publish object exceeds 0, the assertion failure is triggered. This results in abnormal termination of the service, creating an avenue for attackers to exploit the system or leak data.

Conceptual Example Code

The conceptual example below shows how a malicious actor might exploit this vulnerability through a network request with an excessive QoS value:

POST /publish HTTP/1.1
Host: vulnerable.flashmq.com
Content-Type: application/json
{ "QoS": 2, "topic": "test", "message": "test message" }

In this example, the QoS value is set to 2, which is greater than the expected maximum value of 0. This would trigger the assertion failure, potentially leading to system compromise or data leakage.

Mitigation

Users are urged to apply the vendor patch as soon as it becomes available. Until then, use of a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can serve as temporary mitigation against potential exploitation of this vulnerability.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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