Vulnerability identifier: #VU72166

Vulnerability risk: Medium

CVSSv3.1: 4.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-0567

CWE-ID: CWE-330

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 bypass authentication.

The vulnerability exists due to an error within the Password_verify() function, which always returns true with some hashes. A remote attacker can bypass authentication process and gain unauthorized access to the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

PHP: 8.1.0 - 8.1.15, 8.2.0 - 8.2.2, 8.0.0 - 8.0.27, 7.4 - 7.4.33, 7.3 - 7.3.33, 7.2 - 7.2.34

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External links
http://www.php.net/ChangeLog-8.php#8.0.28
http://www.php.net/ChangeLog-8.php#8.2.3
http://bugs.php.net/bug.php?id=81744

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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.