CVE-2024-4577

Description

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.

How to fix CVE-2024-4577

To remediate CVE-2024-4577, upgrade the affected package to a fixed version below.

—upgrade to 8.1.29 or later
—upgrade to 8.1.29 or later
—upgrade to 8.1.29 or later

Is CVE-2024-4577 being exploited?

Yes — CVE-2024-4577 is on the CISA Known Exploited Vulnerabilities (KEV) catalog. Patch immediately.

Affected packages (3)

from 0, < 8.1.29, >= 8.2.0, < 8.2.20, >= 8.3.0, < 8.3.8
from 0, < 8.1.29, >= 8.2.0, < 8.2.20, >= 8.3.0, < 8.3.8
from 0, < 8.1.29, >= 8.2.0, < 8.2.20, >= 8.3.0, < 8.3.8

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	CRITICAL9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H