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critical9.8Known exploitedPublic exploit code

CVE-2024-4577

PHP-CGI OS Command Injection Vulnerability

Exploited in the wild

This vulnerability is on a Known Exploited Vulnerabilities catalogue, added 2024-06-12. Federal due date: 2024-07-03.

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Public exploit code

Working exploit or proof of concept code has been published for this vulnerability. Treat unpatched systems as at risk.

Impact

In PHP versions 8.1.* before 8.1.29, 8.2.* before 8.2.20, 8.3.* before 8.3.8, when using Apache and PHP-CGI on Windows, if the system is set up to use certain code pages, Windows may use "Best-Fit" behavior to replace characters in command line given to Win32 API functions. PHP CGI module may misinterpret those characters as PHP options, which may allow a malicious user to pass options to PHP binary being run, and thus reveal the source code of scripts, run arbitrary PHP code on the server, etc.

Affected products

VendorProductAffected versions
PhpPhp
from 8.1.0 before 8.1.29
from 8.2.0 before 8.2.20
from 8.3.0 before 8.3.8
FedoraprojectFedora
Versions 39, 40

Weakness classification

References