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Snitz Forums 2000 Cross-Site Scripting
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Secunia Advisory:
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SA8623
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Release Date:
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2003-04-18
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Popularity:
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5,956 views
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Critical:
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Less critical
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Impact:
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Cross Site Scripting
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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: | Snitz Forums 2000 3.4.x
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Description:
Snitz Forums 2000 contains an input validation error, which can be exploited by malicious users to conduct Cross-Site Scripting attacks against other users.
The function "ReplaceImageTags()" in "inc_func_common.asp" doesn't validate user input in image tags properly. A malicious person can exploit this to insert script code into an image tag by including a horizontal tab char "\t" (ASCII 0x09) into the script command. Script code will be executed in the user's browser session, when the entry is viewed.
Successful exploitation can result in disclosure of various information (eg. cookie-based authentication information) associated with the site running Snitz Forums 2000 or inclusion of malicious content, which the user thinks is part of the real website.
Solution:
The vendor has suggested the following fix:
http://forum.snitz.com/forum/topic.asp?TOPIC_ID=43554
Provided and/or discovered by:
badWebMasters
Original Advisory:
German:
http://int23.online.de/badwebmasters/txt/adv011.txt
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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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