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GHSA-mg4x-prh7-g4mx

GHSA-mg4x-prh7-g4mx · Zend-Captcha Information Disclosure and Insufficient Entropy vulnerability

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 7.5 · High · Fix available

Published
Updated

Stack: php

Affected products and versions

  • zendframework/zend-captcha Packagist

    Versions
    • 2.0.3
    • 2.0.4
    • 2.0.5
    • 2.0.6
    • 2.0.7
    • 2.0.8
    • 2.1.0
    • 2.1.1
    • 2.1.2
    • 2.1.3
    • 2.1.4
    • 2.1.5
    • 2.1.6
    • 2.2.0
    • 2.2.0rc1
    • 2.2.0rc2
    • 2.2.0rc3
    • 2.2.1
    • 2.2.10
    • 2.2.2
    • 2.2.3
    • 2.2.4
    • 2.2.5
    • 2.2.6
    • 2.2.7
    • 2.2.8
    • 2.2.9
    • 2.3.0
    • 2.3.1
    • 2.3.2
    • 2.3.3
    • 2.3.4
    • 2.3.5
    • 2.3.6
    • 2.3.7
    • 2.3.8
    • 2.3.9
    • 2.4.0
    • 2.4.0rc1
    • 2.4.0rc2
    • 2.4.0rc3
    • 2.4.0rc4
    • 2.4.0rc5
    • 2.4.0rc6
    • 2.4.0rc7
    • 2.4.1
    • 2.4.2
    • 2.4.3
    • 2.4.4
    • 2.4.5
    • 2.4.6
    • 2.4.7
    • 2.4.8
    Affected ranges
    • ECOSYSTEM: ≥ 2.0.0, < 2.4.9

    Update to 2.4.9

  • zendframework/zend-captcha Packagist

    Versions
    • 2.5.0
    • 2.5.1
    Affected ranges
    • ECOSYSTEM: ≥ 2.5.0, < 2.5.2

    Update to 2.5.2

Original sources

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