Saint WorstFit

Technical record

Disclosed on

January 10 2025

CVE

CVE-2024-4577CVE-2024-49026CVE-2024-45720CVE-2024-8067

CVSS

9.8Actively exploited (CISA KEV)

Product

PHP Group · PHP

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.

Sources: worst.fit · blog.orange.tw · devco.re