Intelligence online17 sources monitored8 actively exploited 7d26 published 24hChecked recently
Vulnerability record

CVE-2024-4577

PHP-CGI OS Command Injection Vulnerability

CriticalExploitation confirmedCISA KEV Used by ransomware
What should I do?

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run PHP, fix it now.

CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

US federal civilian agencies must remediate by Jul 3, 2024.

Patch status

Official fix available since

Apply the vendor's update to every affected system. Check the fixed-in versions below where known.

Basis: NVD patch reference

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.

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Affected products

ProductVendorAffected versionsFixed inSource
PHPPHP Group——KEV
PHPPHP>= 8.1.0, < 8.1.29; >= 8.2.0, < 8.2.20; >= 8.3.0, < 8.3.88.1.29; 8.2.20; 8.3.8NVD

Sources: KEV = CISA Known Exploited Vulnerabilities catalog; NVD = NIST National Vulnerability Database.

Intelligence timeline

Developments from the last 30 days, newest first.

  1. CVSS scoredUpdateKEV

    CVE-2024-4577 scored CVSS 9.8: PHP Group PHP, PHP-CGI OS Command Injection Vulnerability

    CISA lists this as exploited in the wild and known to be used in ransomware campaigns. Unpatched PHP systems are exposed to active attacks now.

    Basis: NIST National Vulnerability Database

  2. Patch releasedUpdateKEV

    Patch released for CVE-2024-4577: PHP Group PHP, PHP-CGI OS Command Injection Vulnerability

    An official fix is now available for PHP Group PHP. This vulnerability is being exploited, so apply it promptly.

    Basis: NVD patch reference

1 earlier event is available with a subscription. See plans.

Coverage

We have not published a story about this vulnerability yet.

References

  • php.net https://www.php.net/ChangeLog-8.php#
  • nvd.nist.gov https://nvd.nist.gov/vuln/detail/CVE-2024-4577
  • openwall.com http://www.openwall.com/lists/oss-security/2024/06/07/1
  • arstechnica.com https://arstechnica.com/security/2024/06/php-vulnerability-allows-attackers-to-run-malicious-code-on-windows-s…
  • blog.orange.tw https://blog.orange.tw/2024/06/cve-2024-4577-yet-another-php-rce.html
  • cert.be https://cert.be/en/advisory/warning-php-remote-code-execution-patch-immediately
  • devco.re https://devco.re/blog/2024/06/06/security-alert-cve-2024-4577-php-cgi-argument-injection-vulnerability-en/
  • github.com https://github.com/11whoami99/CVE-2024-4577
  • github.com https://github.com/php/php-src/security/advisories/GHSA-3qgc-jrrr-25jv
  • github.com https://github.com/rapid7/metasploit-framework/pull/19247
  • github.com https://github.com/watchtowrlabs/CVE-2024-4577
  • github.com https://github.com/xcanwin/CVE-2024-4577-PHP-RCE
  • isc.sans.edu https://isc.sans.edu/diary/30994
  • labs.watchtowr.com https://labs.watchtowr.com/no-way-php-strikes-again-cve-2024-4577/
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PKGTQUOA2NTZ3RX…
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/W45DBOH56NQDRTO…
  • security.netapp.com https://security.netapp.com/advisory/ntap-20240621-0008/
  • imperva.com https://www.imperva.com/blog/imperva-protects-against-critical-php-vulnerability-cve-2024-4577/
  • php.net https://www.php.net/ChangeLog-8.php#8.1.29
  • php.net https://www.php.net/ChangeLog-8.php#8.2.20
  • php.net https://www.php.net/ChangeLog-8.php#8.3.8
  • blog.talosintelligence.com https://blog.talosintelligence.com/new-persistent-attacks-japan/
  • vicarius.io https://www.vicarius.io/vsociety/posts/php-cgi-argument-injection-to-rce-cve-2024-4577
  • vicarius.io https://www.vicarius.io/vsociety/posts/php-cgi-os-command-injection-vulnerability-cve-2024-4577
  • cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-4577