CVE-2024-38816 represents a high-severity vulnerability affecting applications that serve static resources through the Spring Framework's WebMvc.fn or WebFlux.fn functional web frameworks. This vulnerability allows attackers to execute path traversal attacks, potentially gaining access to any file on the file system that is accessible to the process running the Spring application. Specifically, this vulnerability arises when two conditions are met: the web application uses RouterFunctions to serve static resources and resource handling is explicitly configured with a FileSystemResource location.
The risk to organizations includes unauthorized access to sensitive files, which could result in data breaches, loss of confidentiality, and damage to reputation. The vulnerability has a CVSS score of 7.5, indicating a high severity level that necessitates immediate attention from security teams. Organizations should prioritize patching immediately to mitigate the risk associated with this vulnerability.
Exploitability of this vulnerability is critical, with known exploits available. Attackers may leverage this vulnerability to craft malicious HTTP requests to access files that should remain protected. However, it is important to note that if the Spring Security HTTP Firewall is employed, or if the application runs on Tomcat or Jetty, malicious requests may be blocked and rejected.
Given the severity and the potential for exploitation, organizations using the affected frameworks must take proactive measures to secure their applications. This includes deploying patches and updates as soon as they become available and reviewing configurations to ensure adherence to security best practices.
Vulnerability Details
The official CVE description highlights that applications using Spring's functional frameworks may be vulnerable to path traversal attacks. The vulnerability is classified under CWE-22, which pertains to improper limitation of a pathname to a restricted directory. The attack vector is classified as NETWORK with a low attack complexity, meaning that it does not require advanced skills to exploit.
The confidentiality impact is rated as high, as attackers may gain access to sensitive information. However, the integrity and availability impacts are rated as none, indicating that the primary risk lies in unauthorized data access rather than data modification or service disruption.
Published on September 13, 2024, this vulnerability is currently awaiting analysis. Organizations should remain vigilant and monitor for any updates or patches released by the Spring Framework team.
Technical Analysis
The root cause of CVE-2024-38816 is the configuration of static resource handling within the affected frameworks. When both RouterFunctions and FileSystemResource locations are used, the application becomes vulnerable to path traversal attacks. Attackers can manipulate the path in HTTP requests to access files outside the intended directory, potentially leading to sensitive data exposure.
The attack vector is through network requests where malicious actors can send crafted HTTP requests targeting the vulnerable application. The attack complexity is considered low, as it does not require any user interaction or elevated privileges to execute successfully.
Organizations should assess their configurations to ensure that static resource handling is not exposed to path traversal vulnerabilities. Effective use of the Spring Security HTTP Firewall can provide an additional layer of protection against such attacks.
Risk & Impact Analysis
The real-world risk of CVE-2024-38816 is significant, particularly for organizations that rely heavily on Spring's functional frameworks for web applications. The potential for unauthorized access to sensitive files could lead to severe consequences, including data breaches and regulatory penalties. Organizations need to assess the blast radius of this vulnerability by identifying all applications utilizing affected frameworks and implementing necessary mitigations.
The urgency of addressing this vulnerability is underscored by its high CVSS score of 7.5. Given the exploitability status of this vulnerability, organizations should prioritize patching immediately. Additionally, organizations should conduct a thorough review of their security configurations and implement best practices to harden their applications against potential exploitation.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions prior to vendor patch are affected by this vulnerability. Organizations should verify their Spring framework versions and ensure they have applied the latest updates to mitigate this risk.
Mitigation & Remediation
To remediate this vulnerability, organizations should apply the latest patches and updates provided by the Spring Framework team. Additionally, it is recommended to review and harden the configuration of static resource handling to minimize exposure to path traversal attacks.
Organizations should also consider implementing the Spring Security HTTP Firewall to help protect against malicious requests that attempt to exploit this vulnerability. For detailed guidance, organizations can refer to the penetration testing services offered by AppSecure to validate the effectiveness of their security measures.
Detection Guidance
Organizations should monitor log indicators for unauthorized access attempts and unusual file access patterns. Behavioral anomalies should also be flagged for further investigation, particularly those originating from public-facing applications.
AppSecure Threat Intelligence Insight
CVE-2024-38816 highlights the ongoing need for organizations to prioritize security configurations, especially in environments utilizing web frameworks. The presence of public proofs of concept indicates a shift toward more exploitability, emphasizing the importance of timely updates and security reviews.
Security teams should take this opportunity to evaluate their overall risk posture and consider implementing a comprehensive penetration testing methodology to identify and remediate similar vulnerabilities proactively.
The strategic defensive takeaway is to enhance awareness and training for development teams regarding secure coding practices, thus reducing the likelihood of vulnerabilities like CVE-2024-38816 in future applications.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
.webp)