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CVE-2024-50379: A Critical Race Condition in Apache Tomcat


CVE-2024-50379: A Critical Race Condition in Apache Tomcat

Recently, an Apache Tomcat web server vulnerability, tracked as CVE-2024-50378, has been published, exposing the platform to remote code execution through a race condition failure.

The CVE refers to a Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability that occurs during JSP (JavaServer Pages) compilation in Apache Tomcat. Under certain conditions, this flaw can lead to Remote Code Execution (RCE) on systems with case-insensitive file systems (e.g., Windows).

An attacker could exploit this by quickly uploading a malicious JSP file with a different case after Tomcat checks for the file but before it compiles the JSP. If the default servlet is configured to allow write operations (which is not the default setup), this can lead to the compilation and execution of the malicious JSP., and results in a remote code execution.

It is essential to understand that two conditions must be true for your system to be vulnerable to that CVE:

CVE-2024-50379 highlights the importance of timely updates and careful configuration management when deploying servers. For any organization running Apache Tomcat, particularly in environments where case-insensitive file systems are in use, this vulnerability demands immediate attention to secure your infrastructure from potential exploits. Always keep your systems patched, and your configurations secure to mitigate risks like these.

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