CVE-2024-38809 identifies a medium-severity vulnerability affecting applications that parse ETags from "If-Match" or "If-None-Match" request headers. This vulnerability allows attackers to exploit the parsing mechanism, potentially leading to a Denial of Service (DoS) condition. The CVSS score of 5.3 indicates a moderate level of risk, requiring organizations to address this issue promptly.
The risk to organizations includes potential service disruptions caused by the DoS attack, which may impact availability and lead to operational challenges. As the vulnerability remains unaddressed, organizations could face increased downtime and loss of productivity.
Currently, there are no known exploits or public proof of concept (PoC) available for this vulnerability. However, the potential for exploitation remains, and organizations should prioritize remediation efforts.
Organizations should prioritize patching immediately. Users of affected versions are encouraged to upgrade to the corresponding fixed version. For those on older, unsupported versions, implementing a size limit on the "If-Match" and "If-None-Match" headers through a Filter can mitigate the risk.
Vulnerability Details
The CVE-2024-38809 vulnerability allows for a potential DoS attack through improper parsing of ETags from request headers, specifically "If-Match" and "If-None-Match". The CVSS score of 5.3 classifies this vulnerability as medium severity, suggesting that while the risk is significant, it is not the highest priority. The vulnerability was published on September 27, 2024, and its CWE classification is CWE-400, which pertains to the handling of resource exhaustion.
Technical Analysis
The root cause of CVE-2024-38809 stems from the application's inability to properly validate and enforce size limits on request headers. This oversight allows attackers to craft requests that exceed acceptable limits, leading to resource exhaustion and denial of service. The attack vector is network-based, with low attack complexity and no privileges or user interaction required.
The vulnerability impacts the availability of the affected application, as attackers can exploit these parsing mechanisms to disrupt service operations, leading to downtime. However, there are no confidentiality or integrity impacts associated with this vulnerability.
Risk & Impact Analysis
Real-world deployment risk associated with CVE-2024-38809 includes the potential for significant service disruptions. Organizations deploying vulnerable applications may experience outages, affecting their ability to provide services to clients and stakeholders. The blast radius of such a vulnerability could be extensive, especially for businesses relying on continuous availability.
Given the CVSS score of 5.3, organizations should assess the urgency of addressing this vulnerability. While it is not classified as critical, it falls within a medium severity range that warrants responsive action to prevent exploitation.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
Specific version ranges affected by CVE-2024-38809 are not provided. Users should ensure they are running the latest fixed version of their applications. If version information is unavailable, organizations should assume that all versions prior to the vendor patch are potentially vulnerable.
Mitigation & Remediation
Organizations should apply available patches or updates for affected products as soon as possible. If immediate patching is not feasible, implementing a size limit on the "If-Match" and "If-None-Match" headers can help mitigate the risk. Consider utilizing a Filter to enforce these limits effectively.
For further guidance on application security and best practices, organizations can consult resources on application security assessment and appropriate remediation strategies.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor logs for unusual request patterns, particularly regarding the "If-Match" and "If-None-Match" headers. Behavioral anomalies or spikes in request volumes may indicate attempts to exploit this vulnerability.
AppSecure Threat Intelligence Insight
CVE-2024-38809 highlights a critical aspect of application security concerning the handling of HTTP request headers. Organizations must remain vigilant against similar vulnerabilities that can lead to service disruption. Security teams should prioritize regular assessments and testing, particularly focusing on input validation and resource management.
For comprehensive insights into vulnerability management, organizations should refer to our vulnerability management program and the importance of continuous security testing.
Additionally, organizations should consider leveraging resources for penetration testing to uncover similar vulnerabilities in their systems.
Lastly, insights into common misconfigurations and vulnerabilities can be found in our guide on cloud security assessment which can further strengthen security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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