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GHSA-848f-mph5-9pm9

GHSA-848f-mph5-9pm9 · Zendframework Potential 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/zendframework1 Packagist

    Versions
    • 1.12.0
    • 1.12.1
    • 1.12.10
    • 1.12.11
    • 1.12.12
    • 1.12.13
    • 1.12.14
    • 1.12.15
    • 1.12.16
    • 1.12.2
    • 1.12.3
    • 1.12.4
    • 1.12.5
    • 1.12.6
    • 1.12.7
    • 1.12.8
    • 1.12.9
    Affected ranges
    • ECOSYSTEM: ≥ 1.12.0, < 1.12.17

    Update to 1.12.17

Original sources

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