In NetX HTTP server functionality of Eclipse ThreadX NetX Duo before version 6.4.2, this vulnerability allows an attacker to cause an integer underflow and a subsequent denial of service. This occurs when specially crafted packets with a Content-Length in one packet smaller than the data request size of the other packet are sent, potentially leading to service interruptions.
The CVSS score of 5.3 categorizes this vulnerability as medium severity, indicating that while it could be exploited, it is not as critical as higher-severity vulnerabilities. However, the nature of the attack vector being network-based, combined with its low attack complexity, means that organizations should prioritize addressing this vulnerability to prevent any potential service disruptions.
Risk to organizations includes potential denial of service, which can significantly impact operations. Although there is currently no known exploit, the presence of this vulnerability presents a risk that organizations should not overlook. Organizations should prioritize patching immediately.
This vulnerability has been analyzed and documented, and while a workaround exists — disabling HTTP PUT support — it is essential for organizations to apply the necessary patches when available to fully mitigate the risk.
Vulnerability Details
The vulnerability is classified under CWE-191, which pertains to integer underflows. It affects the Eclipse ThreadX NetX Duo, specifically versions prior to 6.4.2. The vulnerability was published on February 21, 2025, and has been analyzed in detail.
Technical Analysis
The root cause of this vulnerability is the integer underflow that occurs during the processing of HTTP requests. This underflow can be exploited by sending crafted packets that manipulate the Content-Length header, leading to a denial of service condition. The attack vector is network-based, allowing attackers to exploit this vulnerability remotely.
The attack complexity is low, with attackers requiring only low privileges and no user interaction. The attack impacts the availability of the service, as it can lead to service interruptions.
Risk & Impact Analysis
Organizations deploying Eclipse ThreadX NetX Duo are at risk of service disruptions due to this vulnerability. The potential for denial of service can impact both customer experience and operational continuity. Given the CVSS score of 7.5, this vulnerability should be treated with high urgency, ensuring that it is addressed in the priority patch cycle.
The presence of this vulnerability in the software could also lead to a negative perception among users and stakeholders, emphasizing the need for timely remediation.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected product is Eclipse ThreadX NetX Duo, with all versions prior to vendor patch 6.4.2 being vulnerable. Organizations should ensure they are running the latest version to mitigate this risk.
Mitigation & Remediation
Organizations should prioritize applying the vendor patch to version 6.4.2 or later. If patching is not immediately feasible, a possible workaround is to disable HTTP PUT support to mitigate the risk temporarily.
Furthermore, organizations should consider implementing strict network controls and monitoring for unusual activity to detect any potential exploitation attempts.
For more comprehensive security measures, organizations may want to explore penetration testing to identify similar weaknesses.
Detection Guidance
To effectively monitor for exploitation of this vulnerability, organizations should look for the following indicators: unusual HTTP request patterns, particularly those involving large payloads; system logs indicating service interruptions; and network traffic that appears anomalous.
AppSecure Threat Intelligence Insight
This vulnerability is significant as it represents a broader trend in network-based vulnerabilities that can lead to service disruptions. Security teams should take note of this pattern and implement regular security assessments to identify similar vulnerabilities in their environments.
Lessons learned from this incident can guide organizations in enhancing their defensive measures. By maintaining an active vulnerability management program and conducting regular security audits, organizations can better prepare for potential threats.
For further reading on enhancing security postures, organizations may explore our resources on penetration testing methodology and vulnerability management program design to strengthen their defenses.
As always, proactive measures and timely responses are key to maintaining a secure environment.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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