Vulnerability identifier: #VU77112

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-2023-3247

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 a missing error check and insufficient random bytes in HTTP Digest authentication for SOAP. A remote attacker can perform a brute-force attack and bypass authentication process.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

PHP: 8.1.0 - 8.1.19, 8.2.0 - 8.2.6, 8.0.0 - 8.0.28, 7.4 - 7.4.33

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External links
http://www.php.net/ChangeLog-8.php#8.0.29
http://www.php.net/ChangeLog-8.php#8.1.20
http://www.php.net/ChangeLog-8.php#8.2.7

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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.