GHSA-mg4x-prh7-g4mx – zendframework/zend-captcha

Package

Manager: composer
Name: zendframework/zend-captcha
Vulnerable Version: >=2.0.0 <2.4.9 || >=2.5.0 <2.5.2

Severity

Level: High

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS: N/A pctlN/A

Details

Zend-Captcha Information Disclosure and Insufficient Entropy vulnerability In Zend Framework, `Zend_Captcha_Word` (v1) and `Zend\Captcha\Word` (v2) generate a "word" for a CAPTCHA challenge by selecting a sequence of random letters from a character set. Prior to this advisory, the selection was performed using PHP's internal `array_rand()` function. This function does not generate sufficient entropy due to its usage of rand() instead of more cryptographically secure methods such as `openssl_pseudo_random_bytes()`. This could potentially lead to information disclosure should an attacker be able to brute force the random number generation.

Metadata

Created: 2024-06-07T22:25:12Z
Modified: 2024-06-07T22:25:12Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/06/GHSA-mg4x-prh7-g4mx/GHSA-mg4x-prh7-g4mx.json
CWE IDs: ["CWE-331"]
Alternative ID: N/A
Finding: F034
Auto approve: 1