CVE-2024-36387 is a medium-severity vulnerability affecting Apache HTTP Server and NetApp ONTAP. This vulnerability allows serving WebSocket protocol upgrades over a HTTP/2 connection, which could result in a Null Pointer dereference. The subsequent crash of the server process can significantly degrade performance. With a CVSS score of 5.4, this vulnerability presents a notable risk to affected systems, particularly in environments relying on these technologies.
Organizations using Apache HTTP Server versions between 2.4.55 and 2.4.59, as well as NetApp ONTAP version 9, are particularly at risk. The potential for a server crash due to this vulnerability necessitates immediate attention from IT security teams. Given the nature of the vulnerability, organizations should assess their exposure and the impact on their operations.
As of now, there are no confirmed public exploits available for this vulnerability, which might suggest a lower immediate risk of exploitation. However, organizations should not become complacent, as the potential for exploitation remains a concern, especially in high-traffic environments.
Urgency for defenders is moderate; organizations should schedule remediation as part of their patch management processes to mitigate the risks associated with this vulnerability.
Vulnerability Details
The official description of CVE-2024-36387 indicates that the vulnerability is caused by serving WebSocket protocol upgrades over a HTTP/2 connection, leading to a Null Pointer dereference. This can result in a crash of the server process, degrading performance. The vulnerability is classified under CWE-476, indicating a null pointer dereference issue. The attack vector is network-based, with low complexity and low privileges required for exploitation.
Published on July 1, 2024, this vulnerability has been analyzed and documented as an issue for Apache HTTP Server and NetApp ONTAP. Organizations should verify their software versions to ensure they have not been affected by this vulnerability.
Technical Analysis
The root cause of CVE-2024-36387 is a flaw in the handling of WebSocket protocol upgrades over HTTP/2 connections. This flaw allows for a Null Pointer dereference, which results in the server crashing. The attack vector is network-based, meaning that remote attackers can exploit this vulnerability without physical access to the server.
The attack complexity is low, as it does not require any specialized knowledge or skills. Only low privileges are necessary to trigger the vulnerability, and no user interaction is required. The confidentiality impact is none, while the integrity and availability impacts are low, as a successful attack could lead to service disruption.
Risk & Impact Analysis
Risk to organizations includes potential service outages and degraded performance, particularly in environments where Apache HTTP Server and NetApp ONTAP are critical components. The blast radius can be significant if these servers handle a large volume of requests or are integral to business operations.
Given the CVSS score of 5.4, organizations should treat this vulnerability with a moderate level of urgency. Although not immediately exploitable, the vulnerability’s existence in widely used server applications means it could be targeted in future attacks. Organizations should schedule remediation as part of their regular patch management processes.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The following versions are vulnerable to CVE-2024-36387: Apache HTTP Server versions 2.4.55 to 2.4.59 and NetApp ONTAP version 9. Organizations should ensure they are running patched versions to avoid exposure to this vulnerability.
Mitigation & Remediation
Organizations should prioritize patching affected products to mitigate the risk associated with CVE-2024-36387. The recommended action is to upgrade to the latest version of Apache HTTP Server and NetApp ONTAP. If immediate patching is not possible, consider implementing network controls to limit access to affected services. Regular monitoring of server performance can also help identify potential issues before they escalate.
For further insights into best practices for securing your applications, organizations can refer to our application security assessment services.
Detection Guidance
To detect potential exploitation of CVE-2024-36387, organizations should monitor logs for unusual patterns, particularly around WebSocket connections over HTTP/2. Indicators of compromise may include sudden spikes in error logs or server crashes. Additionally, monitoring for repeated connection attempts from unknown sources can provide early warning signs of potential attacks.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2024-36387 lies in its representation of vulnerabilities that can arise from protocol upgrades in established web technologies. This incident underscores the importance of rigorous testing and validation processes for updates in widely used server software.
Security teams should take this as a lesson to review their patch management strategies and ensure that they have processes in place for timely upgrades. Engaging in penetration testing can help identify similar weaknesses before they can be exploited.
In conclusion, organizations should remain vigilant and proactive in their approach to security, as vulnerabilities like CVE-2024-36387 can lead to significant operational disruptions if left unaddressed.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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