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Home >> Browse Vulnerability Assessment Database >> CGI abuses >> Drupal Captcha Bypass Vulnerability


Vulnerability Assessment Details

Drupal Captcha Bypass Vulnerability

Vulnerability Assessment Summary
Tries to bypass captcha when registering as a new user in Drupal

Detailed Explanation for this Vulnerability Assessment

Summary :

The remote web server contains a PHP application that is affected by a
security bypass vulnerability.

Description :

The version of Drupal installed on the remote host includes at least
one third-party module that adds a 'captcha' to various forms such as
for user registration but which can be bypassed using a specially-
crafted 'edit[captcha_response]' parameter. As a result, a possible hacker
can script access to whatever forms the module is designed to protect
from automated abuse.

See also :

http://drupal.org/node/114364
http://drupal.org/node/114519

Solution :

Upgrade to Drupal captcha module version 4.7-1.2 / 5.x-1.1 and/or
textimage module version 4.7-1.2 / 5.x-1.1 or later.

Network Security Threat Level:

Low / CVSS Base Score : 2.3
(AV:R/AC:L/Au:NR/C:N/I:P/A:N/B:N)

Networks Security ID: 22329

Vulnerability Assessment Copyright: This script is Copyright (C) 2007 Tenable Network Security

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