Welcome to our detailed analysis of CVE-2024-38474, a newly disclosed critical security vulnerability affecting the Apache HTTP Server up to version 2.4.59. This issue has been given a severity rating of 9.8, indicating that it poses a significant threat to the integrity and security of systems running the affected versions of Apache HTTP Server. In this guide, we'll explore the nature of the vulnerability, its potential impacts on your system, and the steps you should take to mitigate the risk.
What is Apache HTTP Server?
Apache HTTP Server is one of the most popular web server software in the world, used to host websites and deliver content over the internet. Developed and maintained by the Apache Software Foundation, it is a key component of the internet infrastructure, supporting a substantial percentage of the world's websites.
About CVE-2024-38474
The critical vulnerability identified as CVE-2024-38474 affects Apache HTTP Server up to and including version 2.4.59. It involves a substitution encoding issue within the module mod_rewrite. Mod_rewrite is a powerful, flexible module used for URL rewriting. It is employed widely for redirecting and manipulating URLs based on desired conditions. This makes it pivotal in SEO efforts, as well as in reconfiguring legacy URLs.
The specific issue allows attackers to execute scripts in directories that are permitted by the server's configuration but are not directly accessible via any URL. Additionally, it may lead to the source disclosure of scripts intended only to be executed as Common Gateway Interface (CGI) scripts.
Implications of the Vulnerability
Exploitation of CVE-2024-38474 can lead to unauthorized information disclosure, modification, and destruction of data, or take over of the affected systems. The administration of the server could get compromised, which highlights the critical nature of this vulnerability.
Recommended Mitigations
Users of Apache HTTP Server must urgently upgrade to version 2.4.60, where this vulnerability has been effectively addressed. In the patch, some RewriteRules that capture and substitute data unsafely will now fail unless the rewrite flag 'UnsafeAllow3F' is specifically enabled. This change is designed to prevent unintended and insecure data processing scenarios that could be exploited via the vulnerability.
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Conclusion
Keeping server software up-to-date is crucial in defending against potential attacks. CVE-2024-38474 demonstrates the ongoing need for vigilance and prompt action in patch management. We at LinuxPatch are committed to providing you with tools and advice to ensure your server environment remains protected against such critical vulnerabilities. Stay secure, update your systems, and do not hesitate to leverage professional resources like LinuxPatch for optimal patch management solutions.