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Guestserver guestbook system vulnerabilities
jaakko
ritke.fi
Date: Sun Dec 11 2005 - 11:42:30 CST
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The poor security and input validation at Guestserver versions below 5 ( there are still lots of them out there ) allow all HTML tags inside a message and it can be exploited as much as you want to.
http://www.stud.ntnu.no/~larsell/guestserver/
A Google Search for "Guestbook by Guestserver - v4.12" for example comes up with tons of vulnerable sites.
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