#VU97691 OS Command Injection in PHP - CVE-2024-8926

Vulnerability identifier: #VU97691

Vulnerability risk: High

CVSSv4.0: 8.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2024-8926

CWE-ID: CWE-78

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
PHP
Universal components / Libraries / Scripting languages

Vendor: PHP Group

Description

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation in PHP-CGI implementation. A remote attacker can send specially crafted HTTP request to the application and execute arbitrary OS commands on the system.

Note, the vulnerability exists due to incomplete fix for #VU91106 (CVE-2024-4577).

Mitigation
Install updates from vendor's website.

Vulnerable software versions

PHP: 8.0.0 - 8.0.30, 8.1.0 - 8.1.29, 8.2.0 - 8.2.23, 8.3.0 - 8.3.11

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External links
https://www.php.net/ChangeLog-8.php#8.1.30
https://www.php.net/ChangeLog-8.php#8.2.24
https://www.php.net/ChangeLog-8.php#8.3.12

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.