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CVE-2017-9841

The path vendor/phpunit/phpunit/src/util/php/eval-stdin.php refers to a critical Remote Code Execution (RCE) vulnerability known as . This flaw allows unauthenticated attackers to execute arbitrary PHP code on a server by sending a specially crafted HTTP POST request to that specific file. What is CVE-2017-9841?

Do not keep this file in any production-accessible location.

The Flaw:

The eval-stdin.php file was designed to take PHP code from stdin and execute it. In certain versions, this file was accessible via a direct URL request if the vendor folder was located within the web root. Do not keep this file in any production-accessible location

CVE-2017-9841

This exact vulnerability was tracked as – affecting PHPUnit versions before 4.8.28, 5.x before 5.6.3, and 6.x before 6.4.0. CVE-2017-9841 This exact vulnerability was tracked as –

In the cybersecurity world, this specific file is infamous. When exposed on a live web server, it acts as a direct backdoor, allowing attackers to execute arbitrary PHP code remotely (RCE - Remote Code Execution). 5.x before 5.6.3