CVE-2024-4577
PHP Group — PHP-CGI OS Command Injection Vulnerability
PHP Group · CWE-78 — Operating system command injection · in CISA KEV since 2024-06-12
EVRS 94 of 100 Immediate
Out-of-Band / Urgent Remediation
Rank 36 of 2,960 tracked
Why it scores 94
Evidence available: 6 of 7 signalsListed in the CISA KEV catalog, and associated with known ransomware campaigns.
- CISA KEVApplied
- RansomwareApplied
- Vendor exploitationDid not apply
- EPSSApplied
- Microsoft Exploitability IndexNot applicable
- Pre-patch disclosureNo data
- KEV recencyDid not apply
- CVSSApplied
The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data
Fix
Patch or fixed version identifiedCISA required action
- This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. Please check with specific vendors for information on patching status. For more information, please see
- nvd.nist.gov/…/CVE-2024-4577
Fixed in
php: update to 8.1.29 or later | php: update to 8.2.20 or later | php: update to 8.3.8 or later
Affected versions
- php
>= 8.1.0 < 8.1.29>= 8.2.0 < 8.2.20>= 8.3.0 < 8.3.8 - windows
- fedora
3940
Remediation
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Fixed versions from NVD.
Evidence
Each value with its source| Measure | Value | Source |
|---|---|---|
| CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. | 9.8 | NVD |
| FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. | 0.999 (99.98th pctl) | FIRST EPSS |
| Actively exploitedWhether a source of record has confirmed attacks using it in the wild. | Confirmed | CISA KEV |
| Ransomware campaign useWhether CISA has seen ransomware operators use it. | Known | CISA KEV |
| CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. | 2024-07-03 · KEV since 2024 · listed over a year | CISA KEV |
| Public exploit moduleA module existing is not the same as active exploitation. | Public module exists | Metasploit |
| EUVD cross-referenceENISA's record: CVSS 9.8 (v3.1), assigned by php. | Listed | ENISA EUVD |
Description
NVDIn 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.
What CISA says to do
- This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. Please check with specific vendors for information on patching status. For more information, please see
- nvd.nist.gov/…/CVE-2024-4577
Public module
Metasploit lists a public excellent-rank module for this CVE: PHP CGI Argument Injection Remote Code Execution (windows/http/php_cgi_arg_injection_rce_cve_2024_4577). A module existing is not the same as active exploitation; see metasploit.com.