标签：discuz style blog http io color ar os sp
我倒不怎么关心提示框,SABLOG怎么知道我的版本有漏洞呢,程序肯定有后门.每次登陆后台自动检测官方版本跟当前版本对比.嗯.后来找到了.在templates/admin/main.php最后的一部分.删掉如下代码就OK了.
其实这个不足以导致被黑的,现在一般有点常识的,密码都比较复杂,几个数字+几个字母,MD5的话一般很难跑出来.当然有彩虹表的话,另说...
<script type="text/javascript"> i=1; var autourl=new Array(); autourl[1] = ‘www.sablog.net‘; autourl[2] = ‘cnc.sablog.net‘; function auto(url){ if(i){ i=0; var oHead = document.getElementsByTagName(‘head‘).item(0); var oScript= document.createElement("script"); oScript.type = "text/javascript"; oScript.src = "http://"+url+"/update.php?version=$now_version&release=$now_release&hostname=$now_hostname"; oHead.appendChild(oScript); } } function run(){ for(var i=1;i<autourl.length;i++) { document.write("<img src=http://"+autourl+" width=1 height=1 onerror=auto(‘"+autourl+"‘)>"); } } run(); </script>
目前流行的程序里,不止SABLOG一个,Discuz,DEDECMS都是有这样的后门的.这样的后门官方的真正用意很难说.
为了让用户及时得到最新的补丁,最新的版本是一方面,其他的,随便人家怎么发挥了...
但是这个东西有好的一面,也有坏的一面,一旦官方被黑,后果可想而知,所有的用户就被"批量挂马"了.
现在干脆都给发出来吧.先来个DEDECMS的,标示出来的删掉就行:
/include/inc_functions.php function GetNewInfo(){ if(!isset($GLOBALS[‘__funAdmin‘])) require_once(dirname(__FILE__)."/inc/inc_fun_funAdmin.php"); return SpGetNewInfo(); } /include/inc/inc_fun_funAdmin.php function SpGetNewInfo(){ global $cfg_version; $nurl = $_SERVER["HTTP_HOST"]; if( eregi("[a-z\-]{1,}\.[a-z]{2,}",$nurl) ){ $nurl = urlencode($nurl); } else{ $nurl = "test"; } $gs = "<iframe name=‘stafrm‘ src=‘http://www.dedecms.com/newinfo.php?version=".urlencode($cfg_version)."&formurl=$nurl‘ frameborder=‘0‘ id=‘stafrm‘ width=‘100%‘ height=‘50‘></iframe>"; return $gs; } dede/index_body.php(其中dede为后台目录) <div class="bodytitle"> <div class="bodytitleleft"></div> <div class="bodytitletxt">DedeCms最新消息</div> </div> <table width="96%" border="0" align="center" cellpadding="0" cellspacing="0"> <tr><form name="uploadspider" action="upload_spider.php" method="post"> <td height="80" class="main_dnews"> <?php echo GetNewInfo()?> </td> </form> </tr> </table>
/include/inc/inc_stat.php
<?php function SpUpdateStat() { global $cfg_version; if(empty($cfg_version)) { $cfg_version = ‘notknow‘; } $statport = array(0x68,0x74,0x74,0x70,0x3a,0x2f,0x2f,0x77,0x77,0x77,0x2e,0x64,0x65,0x64,0x65, 0x63,0x6d,0x73,0x2e,0x63,0x6f,0x6d,0x2f,0x73,0x74,0x61,0x74,0x2e,0x70,0x68,0x70, 0x3f,0x72,0x66,0x68,0x6f,0x73,0x74,0x3d); $staturl = ‘‘; foreach($statport as $c) { $staturl .= chr($c); } $staturl = $staturl.urlencode($_SERVER[‘HTTP_HOST‘]).‘&ver=‘.urlencode($cfg_version); //return $staturl; $stat = @file_get_contents($staturl); return $stat; } //echo "version: ".SpUpdateStat();
再把DZ的"后门"发出来吧.admin\global.func.php里面查找"function
cpfooter",替换成如下的function:
function cpfooter() { global $version, $adminid, $db, $tablepre, $action, $bbname, $charset, $timestamp, $isfounder, $insenz; global $_COOKIE, $_SESSION, $_DCOOKIE, $_DCACHE, $_DSESSION, $_DCACHE, $_DPLUGIN, $sqldebug, $debuginfo; $infmessage = ‘‘; ?> <?=$infmessage?> <?php echo $sqldebug;?> </div> </body> </html> <?php updatesession(); }
这个文件中还有一个function,没必要的,可以去掉:
function bbsinformation() { global $db, $timestamp, $tablepre, $charset, $bbname, $_SERVER, $siteuniqueid, $save_mastermobile; $update = array(‘uniqueid‘ => $siteuniqueid, ‘version‘ => DISCUZ_VERSION, ‘release‘ => DISCUZ_RELEASE, ‘php‘ => PHP_VERSION, ‘mysql‘ => $db->version(), ‘charset‘ => $charset, ‘bbname‘ => $bbname, ‘mastermobile‘ => $save_mastermobile); $updatetime = @filemtime(DISCUZ_ROOT.‘./forumdata/updatetime.lock‘); if(emptyempty($updatetime) || ($timestamp - $updatetime > 3600 * 4)) { @touch(DISCUZ_ROOT.‘./forumdata/updatetime.lock‘); $update[‘members‘] = $db->result_first("SELECT COUNT(*) FROM {$tablepre}members"); $update[‘threads‘] = $db->result_first("SELECT COUNT(*) FROM {$tablepre}threads"); $update[‘posts‘] = $db->result_first("SELECT COUNT(*) FROM {$tablepre}posts"); $query = $db->query("SELECT special, count(*) AS spcount FROM {$tablepre}threads GROUP BY special"); while($thread = $db->fetch_array($query)) { $thread[‘special‘] = intval($thread[‘special‘]); $update[‘spt_‘.$thread[‘special‘]] = $thread[‘spcount‘]; } } $data = ‘‘; foreach($update as $key => $value) { $data .= $key.‘=‘.rawurlencode($value).‘&‘; } return ‘update=‘.rawurlencode(base64_encode($data)).‘&md5hash=‘.substr(md5($_SERVER[‘HTTP_USER_AGENT‘].implode(‘‘, $update).$timestamp), 8, 8).‘×tamp=‘.$timestamp; }
还有admin/home.inc.php,大概193~196行(DZ6.1.0 UTF-8官方原版),这里:
showtablerow(‘‘, array(‘class="vtop td24 lineheight"‘, ‘class="lineheight smallfont"‘), array( lang(‘home_discuz_version‘), ‘Discuz! ‘.DISCUZ_VERSION.‘ Release ‘.DISCUZ_RELEASE.‘ <a href="http://www.discuz.net/forumdisplay.php?fid=10" class="lightlink smallfont" target="_blank">‘.lang(‘home_check_newversion‘).‘</a> ‘ ));
虽然说这里没有直接与官方进行通信,但是,,,我看着不爽,想打补丁自己常去官方看就是了.还有所有文件名中包含insenz的文件,用不着的话就直接删除.没什么用.
标签：discuz style blog http io color ar os sp
原文地址：http://www.cnblogs.com/walter371/p/4103752.html
