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Lanap BotDetect ASP.NET CAPTCHA Bypass Weakness
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Secunia Advisory:
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SA20830
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Release Date:
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2006-06-26
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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: | Lanap BotDetect ASP.NET CAPTCHA 1.x
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| | CVE reference: | CVE-2006-2918 (Secunia mirror)
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Description:
Michael White and Graham Murphy have reported a weakness in Lanap BotDetect ASP.NET, which can be exploited by malicious people to bypass certain security restrictions.
The weakness is caused due to the UUID and hash for a given CAPTCHA being stored within the page's ViewState. This can be exploited to bypass the security feature by replaying the ViewState.
The weakness has been reported in versions prior to 1.5.4.0.
Solution:
Update to version 1.5.4.0.
Provided and/or discovered by:
Michael White and Graham Murphy, Symantec.
Original Advisory:
http://www.symantec.com/enterprise/research/SYMSA-2006-005.txt
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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