Secunia CSI 5.0
Overview
Advisories
Research
Forums
Create Profile
Our Commitment
Database
Search
Advisories by Product
Advisories by Vendor
Terminology
Report Vulnerability
Insecure Library Loading

Secunia Advisory SA20830

Lanap BotDetect ASP.NET CAPTCHA Bypass Weakness
Secunia Advisory SA20830
Get alerted and manage the vulnerability life cycle
Free Trial

Release Date 2006-06-26
   
Popularity 7,857 views
Comments 0 comments

Criticality level Not criticalNot critical
Impact Security Bypass
Where From remote
Authentication level Available in Customer Area
   
Report reliability Available in Customer Area
Solution Status Vendor Patch
   
Systems affected Available in Customer Area
Approve distribution Available in Customer Area
   
Software:
Lanap BotDetect ASP.NET CAPTCHA 1.x
Secunia CVSS Score Available in Customer Area
CVE Reference(s) CVE-2006-2918 CVSS available in Customer Area
  

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

Deep Links
Links available in Customer Area


Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Lanap BotDetect ASP.NET CAPTCHA Bypass Weakness
 
No posts yet

-

You must be logged in to post a comment.



 Products Solutions Customers Partner Resources Company
 
 Corporate
Vulnerability Intelligence Manager (VIM)
Corporate Software Inspector (CSI)
Consumer
Personal Software Inspector (PSI)
Online Software Inspector (OSI)
 Industry
Compliance
Technology
Integration
 Customers
Testimonials
 VARS
MSSP
Technology Partners
References
 Factsheets
Reports & Papers
Webinars
Events
 About us
Careers
Memberships
Newsroom
 
© 2002-2012 Secunia ApS - Rued Langgaards Vej 8, 4th floor, DK-2300 Copenhagen, Denmark - +45 7020 5144
Terms & Conditions and Copyright - Privacy - Report Vulnerability