PHP-CGI OS Command Injection Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2024-06-12
• Known to be used in ransomware campaigns
• EPSS: 100% chance of exploitation in the next 30 days (higher than 100% of CVEs)
• Critical severity: CVSS 9.8

[ Description ]Official 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.

CISA: PHP, specifically Windows-based PHP used in CGI mode, contains an OS command injection vulnerability that allows for arbitrary code execution. This vulnerability is a patch bypass for CVE-2012-1823.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 3 Jul 2024): Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

• Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ References ]References

• www.openwall.com/lists/oss-security/2024/06/07/1Mailing ListThird Party Advisory
• arstechnica.com/security/2024/06/php-vulnerability-allows-attackers-to-run-malicious-co…ExploitPress/Media CoverageThird Party Advisory
• blog.orange.tw/2024/06/cve-2024-4577-yet-another-php-rce.htmlThird Party Advisory
• cert.be/en/advisory/warning-php-remote-code-execution-patch-immediatelyThird Party Advisory
• devco.re/blog/2024/06/06/security-alert-cve-2024-4577-php-cgi-argument-injection-vulner…ExploitThird Party Advisory
• github.com/11whoami99/CVE-2024-4577Exploit
• github.com/php/php-src/security/advisories/GHSA-3qgc-jrrr-25jvExploitThird Party Advisory
• github.com/rapid7/metasploit-framework/pull/19247ExploitIssue TrackingPatch
• github.com/watchtowrlabs/CVE-2024-4577ExploitThird Party Advisory
• github.com/xcanwin/CVE-2024-4577-PHP-RCEExploitThird Party Advisory
• isc.sans.edu/diary/30994ExploitThird Party Advisory
• labs.watchtowr.com/no-way-php-strikes-again-cve-2024-4577ExploitThird Party Advisory
• lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/…Mailing List
• lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/…Mailing List
• security.netapp.com/advisory/ntap-20240621-0008Third Party Advisory
• www.imperva.com/blog/imperva-protects-against-critical-php-vulnerability-cve-2024-4577Third Party Advisory
• www.php.net/ChangeLog-8.phpRelease Notes
• www.php.net/ChangeLog-8.phpRelease Notes
• www.php.net/ChangeLog-8.phpRelease Notes
• blog.talosintelligence.com/new-persistent-attacks-japanExploitThird Party Advisory
• www.vicarius.io/vsociety/posts/php-cgi-argument-injection-to-rce-cve-2024-4577ExploitThird Party Advisory
• www.vicarius.io/vsociety/posts/php-cgi-os-command-injection-vulnerability-cve-2024-4577ExploitThird Party Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource