HTTP Digest for SOAP authentication bypass in PHP

Published: 2023-06-09 | Updated: 2023-06-15
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-3247
Exploitation vector Network
Public exploit N/A
Vulnerable software
Universal components / Libraries / Scripting languages

Vendor PHP Group

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Use of insufficiently random values

EUVDB-ID: #VU77112

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 - Use of Insufficiently Random Values

Exploit availability: No


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.


Install updates from vendor's website.

Vulnerable software versions

PHP: 7.4 - 8.2.6

External links

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.