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Drupal Captcha Module Security Bypass
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Secunia Advisory:
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SA23983
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Release Date:
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2007-01-31
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Last Update:
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2007-02-05
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Popularity:
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5,863 views
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Critical:
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Not critical
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Impact:
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Security Bypass
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | Drupal Captcha Module 4.x
Drupal Captcha Module 5.x
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| CVE reference: | CVE-2007-0658
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Description:
A weakness has been reported in the Captcha module for Drupal, which can be exploited by malicious people to bypass certain security restrictions.
The weakness is caused due to an error within the validation of certain malformed responses. This can be exploited to bypass the captcha check by sending a specially crafted response.
The weakness is reported in Captcha 4.7.x versions prior to 4.7-1.2 and Captcha 5.x versions prior to 5.x-1.1.
Solution:
Update to a fixed version.
Captcha 4.7.x-1.2:
http://drupal.org/node/114367
Captcha 5.x-1.1.
http://drupal.org/node/114366
Provided and/or discovered by:
Independently reported by the Drupal Security Team and William Smith.
Changelog:
2007-02-05: Added CVE reference.
Original Advisory:
http://drupal.org/node/114364
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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