CVE-2024-24990 is a high-severity vulnerability affecting F5 NGINX Plus and NGINX OSS. When configured to use the HTTP/3 QUIC module, undisclosed requests may cause NGINX worker processes to terminate unexpectedly. This can result in service disruption for applications dependent on NGINX, highlighting the importance of addressing this vulnerability promptly.
The CVSS score for this vulnerability is 7.5, indicating a high level of severity. Given its nature, organizations utilizing NGINX Plus or NGINX OSS should prioritize patching to mitigate potential risks to their services. The HTTP/3 QUIC module is not enabled by default and is considered experimental; therefore, organizations that have enabled this module should take immediate action.
Risk to organizations includes potential service disruption and operational challenges, particularly for applications relying on NGINX. Attackers may leverage this vulnerability to terminate NGINX processes, impacting availability. Consequently, organizations should assess their exposure and implement necessary mitigations.
Organizations should prioritize patching immediately. Monitoring for indicators of exploitation and ensuring that the HTTP/3 QUIC module is not enabled unless necessary can further reduce risk.
In summary, CVE-2024-24990 presents a significant risk to NGINX users, and proactive measures must be taken to safeguard against potential service disruptions.
Vulnerability Details
The official CVE description states: 'When NGINX Plus or NGINX OSS are configured to use the HTTP/3 QUIC module, undisclosed requests can cause NGINX worker processes to terminate.' The CVSS version 3.1 score is 7.5, reflecting its high severity. The affected products include NGINX Plus and NGINX Open Source, specifically versions from 1.25.0 to 1.25.4 and certain versions of NGINX Plus (r30 and r31). This vulnerability is classified under CWE-416.
Technical Analysis
The root cause of this vulnerability lies in the handling of requests by the HTTP/3 QUIC module. When specific undisclosed requests are received, the NGINX worker processes may terminate unexpectedly, resulting in a loss of service availability. The attack vector is network-based, requiring no privileges or user interaction, thus making exploitation relatively straightforward.
The attack complexity is low, as attackers can send requests over the network without needing any special conditions. The impact on availability is significant, with the potential for complete service disruption.
In terms of impacts on confidentiality and integrity, there is no impact reported. Therefore, the primary concern for organizations is the availability of the services using NGINX.
Risk & Impact Analysis
The risk to organizations includes the potential for significant downtime of web services, which can result in user dissatisfaction and financial losses. The blast radius could be extensive, particularly for organizations relying heavily on NGINX for load balancing and reverse proxying.
With a CVSS score of 7.5, organizations are urged to assess their exposure to this vulnerability urgently. The lack of active exploitation in the wild as of now provides a brief window for remediation, but the low complexity of the attack vector suggests that it may be only a matter of time before it becomes a target.
Immediate patching and potential configuration reviews are critical to mitigating the risks associated with CVE-2024-24990.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions include NGINX Open Source from 1.25.0 to 1.25.4, NGINX Plus r30, and NGINX Plus r31. Organizations using these versions should apply necessary patches or updates as soon as they become available.
Mitigation & Remediation
To mitigate this vulnerability, organizations must update to the latest version of NGINX Plus or NGINX Open Source. Details on how to apply patches can typically be found on vendor advisories. If a patch is unavailable, organizations should consider disabling the HTTP/3 QUIC module until a fix is applied. Monitoring NGINX logs for unusual patterns may also help in identifying potential exploitation attempts.
For more information on testing and validation of patched systems, organizations can refer to resources on penetration testing practices.
Detection Guidance
Organizations should monitor their systems for unexpected NGINX worker process terminations. Logging request patterns and anomalies can provide insights into potential exploitation attempts. Additionally, network-based intrusion detection systems should be configured to alert on suspicious HTTP/3 traffic.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2024-24990 lies in its demonstration of potential vulnerabilities within experimental features, such as HTTP/3. Security teams should note that experimental features might not undergo rigorous security evaluations before deployment. Ensuring proper testing and validation before enabling such features is crucial.
This vulnerability highlights a trend towards more complex networking protocols that may introduce unforeseen risks. Security teams should conduct thorough assessments of their technology stacks, particularly when adopting new features or protocols.
Organizations are encouraged to implement continuous security testing and maintain regular updates to their security practices. For further insights on vulnerability management, consider consulting the vulnerability management program design best practices.
In summary, organizations should maintain vigilance over their NGINX deployments and ensure that they are prepared to respond to vulnerabilities such as CVE-2024-24990.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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