HTTP Digest for SOAP authentication bypass in PHP

1) Use of insufficiently random values

EUVDB-ID: #VU77112

Risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-3247

CWE-ID: CWE-330 - Use of Insufficiently Random Values

Exploit availability: No

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: 7.4 - 8.2.6

CPE2.3

• cpe:2.3:a:php_group:php:7.4.33:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:8.0.28:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:8.1.19:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:8.2.6:*:*:*:*:*:*:*

External links

https://www.php.net/ChangeLog-8.php#8.0.29
https://www.php.net/ChangeLog-8.php#8.1.20
https://www.php.net/ChangeLog-8.php#8.2.7

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.