| code | #
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if(description)
{
script_id(10933);
script_version("1.35");
script_bugtraq_id(3333);
script_cve_id("CVE-2001-1109");
script_name(english:"EFTP Multiple Command Traversal Arbitrary Directory Listing");
script_set_attribute(attribute:"synopsis", value:
"The remote FTP server is affected by an information disclosure
vulnerability." );
script_set_attribute(attribute:"description", value:
"The version of EFTP installed on the remote host can be used to
determine if a given file exists on the remote host or not, by adding
dot-dot-slashes in front of them.
For instance, it is possible to determine the presence of
'\autoexec.bat' by using the command SIZE or MDTM with the argument
'../../../../autoexec.bat'
An attacker may leverage this flaw to gain more knowledge about this
host, such as its file layout. This flaw is especially useful in
combination with other vulnerabilities." );
script_set_attribute(attribute:"see_also", value:"https://seclists.org/bugtraq/2001/Sep/135" );
script_set_attribute(attribute:"solution", value:
"Upgrade to version 3.2 or higher, as it has been reported to fix this
vulnerability." );
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:N/A:N");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"plugin_publication_date", value: "2002/03/29");
script_set_attribute(attribute:"vuln_publication_date", value: "2001/09/12");
script_cvs_date("Date: 2018/11/15 20:50:22");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_end_attributes();
script_summary(english:"EFTP directory traversal");
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2002-2018 Tenable Network Security, Inc.");
script_family(english:"FTP");
script_dependencie("ftpserver_detect_type_nd_version.nasl", "ftp_anonymous.nasl");
script_require_ports("Services/ftp", 21);
script_require_keys("ftp/login", "Settings/ThoroughTests");
exit(0);
}
#
include('global_settings.inc');
include('misc_func.inc');
include('ftp_func.inc');
if ( ! thorough_tests ) exit(0);
cmd[0] = "SIZE";
cmd[1] = "MDTM";
port = get_ftp_port(default: 21);
login = get_kb_item_or_exit("ftp/login");
pass = get_kb_item("ftp/password");
# login = "ftp"; pass = "[email protected]";
vuln=0; tested=0;
soc = open_sock_tcp(port);
if (! soc) exit(1);
if (ftp_authenticate(socket:soc, user:login, pass:pass))
{
tested=tested+1;
for (i = 0; cmd[i]; i = i + 1)
{
req = string(cmd[i], " ../../../../../../autoexec.bat\r\n");
send(socket:soc, data:req);
r = ftp_recv_line(socket:soc);
if("230 " >< r) vuln=vuln+1;
}
}
else
{
# We could not log in or could not download autoexec.
# We'll just attempt to grab the banner and check for version
# <= 2.0.7
# I suppose that any version < 2 is vulnerable...
r = ftp_recv_line(socket:soc);
if(egrep(string:r, pattern:".*EFTP version ([01]|2\.0\.[0-7])\..*"))
vuln = 1;
}
close(soc);
if (vuln)
{
if (tested)
{
security_warning(port);
}
else
{
rep="
Note that Nessus was not able to test for the presence of
'\autoexec.bat' and solely relied on the version number of your
server, so this may be a false positive.";
security_warning(port:port, extra:rep);
}
exit(0);
}
#
# NB: This server is also vulnerable to another attack.
#
# Date: Thu, 13 Dec 2001 12:59:43 +0200
# From: "Ertan Kurt" <[email protected]>
# Affiliation: Olympos Security
# To: [email protected]
# Subject: EFTP 2.0.8.346 directory content disclosure
#
# It is possible to see the contents of every drive and directory of
# vulnerable server.
# A valid user account is required to exploit this vulnerability.
# It works both with encryption and w/o encryption.
# Here's how it's done:
# the user is logged in to his home directory (let's say d:\userdir)
# when the user issues a CWD to another directory server returns
# permission denied.
# But, first changing directory to "..." (it will chdir to d:\userdir\...)
# then issuing a CWD to "\" will say permission denied but it will
# successfully change to root directory of the current drive.
# And everytime we want to see a dir's content, we first CWD to our
# home directory and then CWD ... and then CWD directly to desired
# directory (CWD c:/ or c:/winnt etc)
#
# So it is possible to see directory contents but i did not test to see
# if there is a possible way to get/put files.
#
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