CRITICAL

CVE-2024-4577

Php PHP 2024-06-09 CVSS v3.1

CVSS

9.8

KEV

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.

Summary dbcve.org

PHP-CGI on Windows with Apache is vulnerable to argument injection via Windows' Best-Fit character mapping. When certain code pages are configured, character replacements in command-line arguments passed to Win32 API functions can be interpreted as PHP options (e.g., -d flags), enabling source code disclosure or arbitrary code execution.

Mitigation

Upgrade PHP to 8.1.29+, 8.2.20+, or 8.3.8+; alternatively, switch from PHP-CGI to mod_php to eliminate the CGI attack surface.

Proof of Concept

Weakness (CWE)

CWE-78 OS Command Injection

EPSS Score

99.99%

Probability of exploitation in next 30 days

100th percentile

References

http://www.openwall.com/lists/oss-security/2024/06/07/1 Mailing List, Third Party Advisory https://arstechnica.com/security/2024/06/php-vulnerability-allows-attackers-to-run-malicious-code-on-windows-servers/ Exploit, Press/Media Coverage, Third Party Advisory https://blog.orange.tw/2024/06/cve-2024-4577-yet-another-php-rce.html Third Party Advisory https://cert.be/en/advisory/warning-php-remote-code-execution-patch-immediately Third Party Advisory https://devco.re/blog/2024/06/06/security-alert-cve-2024-4577-php-cgi-argument-injection-vulnerability-en/ Exploit, Third Party Advisory https://github.com/11whoami99/CVE-2024-4577 Exploit https://github.com/php/php-src/security/advisories/GHSA-3qgc-jrrr-25jv Exploit, Third Party Advisory https://github.com/rapid7/metasploit-framework/pull/19247 Exploit, Issue Tracking, Patch https://github.com/watchtowrlabs/CVE-2024-4577 Exploit, Third Party Advisory https://github.com/xcanwin/CVE-2024-4577-PHP-RCE Exploit, Third Party Advisory https://isc.sans.edu/diary/30994 Exploit, Third Party Advisory https://labs.watchtowr.com/no-way-php-strikes-again-cve-2024-4577/ Exploit, Third Party Advisory https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PKGTQUOA2NTZ3RXN22CSAUJPIRUYRB4B/ Mailing List https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/W45DBOH56NQDRTOM2DN2LNA2FZIMC3PK/ Mailing List https://security.netapp.com/advisory/ntap-20240621-0008/ Third Party Advisory https://www.imperva.com/blog/imperva-protects-against-critical-php-vulnerability-cve-2024-4577/ Third Party Advisory https://www.php.net/ChangeLog-8.php#8.1.29 Release Notes https://www.php.net/ChangeLog-8.php#8.2.20 Release Notes https://www.php.net/ChangeLog-8.php#8.3.8 Release Notes https://blog.talosintelligence.com/new-persistent-attacks-japan/ Exploit, Third Party Advisory https://www.vicarius.io/vsociety/posts/php-cgi-argument-injection-to-rce-cve-2024-4577 Exploit, Third Party Advisory https://www.vicarius.io/vsociety/posts/php-cgi-os-command-injection-vulnerability-cve-2024-4577 Exploit, Third Party Advisory https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-4577 US Government Resource

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