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HTML and Javascript -- Dangers [message #163907] Fri, 10 December 2010 18:16 Go to next message
wittrs is currently offline  wittrs   United States
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I was thinking of making my board html friendly. What are the dangers of doing this? If you allow people to post html, would it exclude javascript?

If one was going to do this in a particular forum, the safest way would be to make the forum moderated, right? That would eliminate any problem?

Yours, thankful.

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Re: HTML and Javascript -- Dangers [message #163911 is a reply to message #163907] Sat, 11 December 2010 04:05 Go to previous messageGo to next message
naudefj is currently offline  naudefj   South Africa
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As far as I understand malicious HTML/JS code won't do any damage to your forum.
However, it may do unwanted things on user's PC when the HTML/JS is rendered.
For example, expose session details, thus allowing accounts to be hijacked.

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Re: HTML and Javascript -- Dangers [message #163919 is a reply to message #163911] Sat, 11 December 2010 19:27 Go to previous message
Ernesto is currently offline  Ernesto   Sweden
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XSS cross site scripting.

No, moderating the forum would not eliminate the problem, then the moderator would be volnurable when previewing the message.

HTML enabled forums is a huge huge nono unless only site managers, etc, are allowed to post to it.

You must never allow end-users to supply HTML code unless you have a rock solid bullet proof parser that removes bad or dangerous HTML code.

Ginnunga Gaming

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