#VU91108 Observable discrepancy in PHP - CVE-2024-2408

Vulnerability identifier: #VU91108

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-2408

CWE-ID: CWE-203

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 gain access to sensitive information.

The vulnerability exists due to the openssl_private_decrypt function in PHP when using PKCS1 padding (OPENSSL_PKCS1_PADDING, which is the default) is vulnerable to the Marvin Attack. A remote attacker can gain access to sensitive information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

PHP: 8.2.0 - 8.2.19, 8.3.0 - 8.3.7

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External links
https://github.com/openssl/openssl/pull/13817

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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.