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Hello Bugtraq!
I want to warn you about security vulnerabilities in TooFAST.
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Advisory: Vulnerabilities in TooFAST
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URL: http://websecurity.com.ua/4053/
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Timeline:
17.03.2010 - found vulnerabilities.
20.03.2010 - disclosed at my site.
22.03.2010 - informed developers.
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Details:
These are Insufficient Anti-automation and Denial of Service
vulnerabilities.
The vulnerabilities exist in captcha script CaptchaSecurityImages.php, which
is using in this system. I already reported about vulnerabilities in
CaptchaSecurityImages (http://websecurity.com.ua/4043/).
Insufficient Anti-automation:
http://site/CaptchaSecurityImages.php?width=150&height=100&characters=2
Captcha bypass is possible via half-automated or automated (with using of
OCR) methods, which were mentioned before (http://websecurity.com.ua/4043/).
DoS:
http://site/CaptchaSecurityImages.php?width=1000&height=9000
With setting of large values of width and height it's possible to create
large load at the server.
Vulnerable are TooFAST 1.5 and previous versions.
Best wishes & regards,
MustLive
Administrator of Websecurity web site
http://websecurity.com.ua