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www.waraxe.us Forum Index -> PhpNuke -> new exploit: $content
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new exploit: $content
PostPosted: Sun Jul 11, 2004 3:54 pm Reply with quote
genoxide
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Joined: Jun 14, 2004
Posts: 15




I was working on my new project and i found that the $content var in several blocks doesn't get parse correctly.
what i mean?
Open block-Survey.php and you will see:
Code:
$content .= "<form action=\"modules.php?name=Surveys\" method=\"post\">";
$content .= "<input type=\"hidden\" name=\"pollID\" value=\"".$pollID."\">";
$content .= "<input type=\"hidden\" name=\"forwarder\" value=\"".$url."\">";


You see the dot (.) after $content? thats wrong, it should be
Code:
$content = "<form action=\"modules.php?name=Surveys\" method=\"post\">";
$content .= "<input type=\"hidden\" name=\"pollID\" value=\"".$pollID."\">";
$content .= "<input type=\"hidden\" name=\"forwarder\" value=\"".$url."\">";


Proof?
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PostPosted: Sun Jul 11, 2004 8:47 pm Reply with quote
SteX
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Joined: May 18, 2004
Posts: 181
Location: Serbia




good work genoxide...i also found some exploits on nukecops..i will post tham later..!!!

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PostPosted: Mon Jul 12, 2004 5:37 pm Reply with quote
madman
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Joined: May 24, 2004
Posts: 46




$content is local variable, regarding to blocks.
Check this thread: http://www.nukecops.com/postt31261.html

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ch88rs,
madman
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PostPosted: Tue Jul 13, 2004 4:08 pm Reply with quote
genoxide
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Joined: Jun 14, 2004
Posts: 15




Even if it's a local variable, it still can be used for XSS
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PostPosted: Tue Jul 13, 2004 8:38 pm Reply with quote
madman
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Joined: May 24, 2004
Posts: 46




genoxide wrote:
Even if it's a local variable, it still can be used for XSS

Hmmm...
It doesn't make sense to me. Smile
First, unitialized $content only appeared in few standard blocks and can simply overriden by next block. Second, How do you XSS such thing? Hook your XSS code to blocks() function? Creating another block?

Please tell me, 'coz you're the "founder" of this "exploit". Wink

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madman
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PostPosted: Tue Jul 13, 2004 9:05 pm Reply with quote
genoxide
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Joined: Jun 14, 2004
Posts: 15




No need for irony, heh Wink
try this on a non patched phpnuke site index.php?content=%253cscript>alert%2528document.cookie);%253c/script>
You will see that you are getting the cookies in a js alert Wink
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PostPosted: Wed Jul 14, 2004 4:05 pm Reply with quote
Jeruvy
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Joined: Jun 17, 2004
Posts: 6




genoxide wrote:
Even if it's a local variable, it still can be used for XSS


Call me skeptical but I'd like to see a PoC.

Thanks,
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PostPosted: Fri Jul 16, 2004 3:50 am Reply with quote
madman
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Joined: May 24, 2004
Posts: 46




Genoxide. well done, m8. Cool
The problem is, the string displayed as is in survey. Yeah it displayed as "%253cscript>alert%2528document.cookie);%253c/script" no matter I tried to modify the hex or change php settings. I tried this in both local and remote server. Maybe I need to setup some Apache settings to accept uri hex. Razz

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madman
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new exploit: $content
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