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CVE-2024-8926— PHP CGI Parameter Injection Vulnerability (CVE-2024-4577 bypass)

Quick assessment

Affected
PHP Group PHP
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

PHP是PHP的一种在服务器端执行的脚本语言。 PHP 8.1.29之前版本、8.2.20之前版本和8.3.8之前版本存在安全漏洞，该漏洞源于在使用非标准配置的Windows代码页时配置不当，该配置通过注册表指向OEM代码页，且这种配置在实际环境中不太可能发生。

CVSS 8.1 · High EPSS 3.66% · P89

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2024-8926

Vulnerability Information
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Vulnerability Title
PHP CGI Parameter Injection Vulnerability (CVE-2024-4577 bypass)
Source: CVE Program / CVE List V5
Vulnerability Description
In PHP versions 8.1.* before 8.1.30, 8.2.* before 8.2.24, 8.3.* before 8.3.12, when using a certain non-standard configurations of Windows codepages, the fixes for  CVE-2024-4577 https://github.com/advisories/GHSA-vxpp-6299-mxw3  may still be bypassed and the same command injection related to Windows "Best Fit" codepage behavior can be achieved. This 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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
PHP 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PHP是PHP的一种在服务器端执行的脚本语言。 PHP 8.1.29之前版本、8.2.20之前版本和8.3.8之前版本存在安全漏洞，该漏洞源于在使用非标准配置的Windows代码页时配置不当，该配置通过注册表指向OEM代码页，且这种配置在实际环境中不太可能发生。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
PHP Group PHP 8.1.* ~ 8.1.30 -

II. Public POCs for CVE-2024-8926

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III. Intelligence Information for CVE-2024-8926

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Vendor Advisories for CVE-2024-8926 (1)

Same Patch Batch · PHP Group · 2024-10-08 · 4 CVEs total

CVE-2024-8927 7.5 HIGH cgi.force_redirect configuration is bypassable due to the environment variable collision
CVE-2024-9026 3.3 LOW PHP-FPM logs from children may be altered
CVE-2024-8925 3.1 LOW Erroneous parsing of multipart form data

IV. Related Vulnerabilities

Same product: PHP
Same vendor: PHP Group
Same weakness: CWE-78

V. Comments for CVE-2024-8926

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