#VU64232 Use of uninitialized resource in PHP - CVE-2022-31625

Vulnerability identifier: #VU64232

Vulnerability risk: High

CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2022-31625

CWE-ID: CWE-908

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PHP
Universal components / Libraries / Scripting languages

Vendor: PHP Group

Description

The vulnerability allows a remote attacker to execute arbitrary code on the system.

The vulnerability exists due to usage of uninitialized array in the pg_query_params() function. A remote attacker with ability to control query parameters can trigger memory corruption and execute arbitrary code on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

PHP: 7.4 - 7.4.29, 8.0.0 - 8.0.19, 8.1.0 - 8.1.6

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External links
https://www.php.net/ChangeLog-8.php#8.1.7
https://www.php.net/ChangeLog-8.php#8.0.20
https://www.php.net/ChangeLog-7.php#7.4.30
https://bugs.php.net/bug.php?id=81720

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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.