WS_FTP Server Multiple Command Remote Overflow DoS - Nessus

Critical   Plugin ID: 15857

This page contains detailed information about the WS_FTP Server Multiple Command Remote Overflow DoS Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents
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Plugin Overview

ID: 15857
Name: WS_FTP Server Multiple Command Remote Overflow DoS
Filename: wsftp_overflows2.nasl
Vulnerability Published: 2004-11-29
This Plugin Published: 2004-11-30
Last Modification Time: 2018-08-07
Plugin Version: 1.14
Plugin Type: remote
Plugin Family: FTP
Dependencies: ftpserver_detect_type_nd_version.nasl

Vulnerability Information

Severity: Critical
Vulnerability Published: 2004-11-29
Patch Published: N/A
CVE [?]: CVE-2004-1135
CPE [?]: N/A

Synopsis

The remote FTP server is affected by a buffer overflow vulnerability

Description

According to its version number, the remote WS_FTP server is vulnerable to multiple buffer overflows which may be used by an attacker to execute arbitrary code on the remote system.

Solution

Upgrade to the latest version of this software.

Public Exploits

Target Network Port(s): 21
Target Asset(s): Services/ftp
Exploit Available: True (Metasploit Framework, Exploit-DB)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the WS_FTP Server Multiple Command Remote Overflow DoS vulnerability:

  1. Metasploit: exploit/windows/ftp/wsftp_server_503_mkd
    [WS-FTP Server 5.03 MKD Overflow]
  2. Exploit-DB: exploits/windows/remote/16719.rb
    [EDB-16719: Ipswitch WS_FTP Server 5.03 - MKD Overflow (Metasploit)]

Before running any exploit against any system, make sure you are authorized by the owner of the target system(s) to perform such activity. In any other case, this would be considered as an illegal activity.

WARNING: Beware of using unverified exploits from sources such as GitHub or Exploit-DB. These exploits and PoCs could contain malware. For more information, see how to use exploits safely.

Risk Information

CVSS V2 Vector [?]: AV:N/AC:L/Au:N/C:C/I:C/A:C/E:F/RL:OF/RC:C
CVSS Base Score:10.0 (High)
Impact Subscore:10.0
Exploitability Subscore:10.0
CVSS Temporal Score:8.3 (High)
CVSS Environmental Score:NA (None)
Modified Impact Subscore:NA
Overall CVSS Score:8.3 (High)

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Plugin Source

This is the wsftp_overflows2.nasl nessus plugin source code. This script is Copyright (C) 2004-2018 Tenable Network Security, Inc. 

#
# (C) Tenable Network Security
#

include("compat.inc");

if(description)
{
 script_id(15857);
 script_bugtraq_id(11772);
 script_cve_id("CVE-2004-1135");
 script_version ("1.14");

 script_name(english:"WS_FTP Server Multiple Command Remote Overflow DoS");
 script_set_attribute(attribute:"synopsis", value:"The remote FTP server is affected by a buffer overflow vulnerability");
 script_set_attribute(attribute:"description", value:"
According to its version number, the remote WS_FTP server is
vulnerable to multiple buffer overflows which may be used by an
attacker to execute arbitrary code on the remote system.");
 script_set_attribute(attribute:"solution", value:"Upgrade to the latest version of this software.");
 script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
 script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
 script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
 script_set_attribute(attribute:"exploit_available", value:"true");
 script_set_attribute(attribute:"metasploit_name", value:'WS-FTP Server 5.03 MKD Overflow');
 script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
 script_set_attribute(attribute:"plugin_publication_date", value: "2004/11/30");
 script_set_attribute(attribute:"vuln_publication_date", value: "2004/11/29");
 script_cvs_date("Date: 2018/08/07 16:46:50");
 script_set_attribute(attribute:"plugin_type", value:"remote");
 script_end_attributes();

 summary["english"] = "Check WS_FTP server version";
  script_summary(english:summary["english"]);
 
 script_category(ACT_GATHER_INFO);
 
 script_copyright(english:"This script is Copyright (C) 2004-2018 Tenable Network Security, Inc.");
 
 script_family(english:"FTP");
 script_dependencie("ftpserver_detect_type_nd_version.nasl");
 script_require_ports("Services/ftp", 21);
 
 exit(0);
}

#

include ("ftp_func.inc");

port = get_ftp_port(default: 21);
banner = get_ftp_banner(port:port);
if ( ! banner ) exit(1);

if (egrep(pattern:"WS_FTP Server ([0-4]\.|5\.0\.[0-3][^0-9])", string: banner))
	security_hole(port);

The latest version of this script can be found in these locations depending on your platform:

  • Linux / Unix:
    /opt/nessus/lib/nessus/plugins/wsftp_overflows2.nasl
  • Windows:
    C:\ProgramData\Tenable\Nessus\nessus\plugins\wsftp_overflows2.nasl
  • Mac OS X:
    /Library/Nessus/run/lib/nessus/plugins/wsftp_overflows2.nasl

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How to Run

Here is how to run the WS_FTP Server Multiple Command Remote Overflow DoS as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

  1. Click to start a New Scan.
  2. Select Advanced Scan.
  3. Navigate to the Plugins tab.
  4. On the top right corner click to Disable All plugins.
  5. On the left side table select FTP plugin family.
  6. On the right side table select WS_FTP Server Multiple Command Remote Overflow DoS plugin ID 15857.
  7. Specify the target on the Settings tab and click to Save the scan.
  8. Run the scan.

Here are a few examples of how to run the plugin in the command line. Note that the examples below demonstrate the usage on the Linux / Unix platform.

Basic usage:

/opt/nessus/bin/nasl wsftp_overflows2.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a wsftp_overflows2.nasl -t <IP/HOST>

Run the plugin with trace script execution written to the console (useful for debugging):

/opt/nessus/bin/nasl -T - wsftp_overflows2.nasl -t <IP/HOST>

Run the plugin with using a state file for the target and updating it (useful for running multiple plugins on the target):

/opt/nessus/bin/nasl -K /tmp/state wsftp_overflows2.nasl -t <IP/HOST>

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References

BID | SecurityFocus Bugtraq ID: See also: Similar and related Nessus plugins:
  • 14195 - 4D WebStar Pre-authentication FTP Overflow
  • 15628 - Ability FTP Server Multiple Command Remote Buffer Overflows
  • 11205 - WarFTPd CWD/MKD Command Overflow
  • 11207 - WarFTPd USER/PASS Command Remote Overflow
  • 24021 - Easy File Sharing FTP Server PASS Command Overflow
  • 10084 - Multiple FTP Server Command Handling Overflow
  • 12080 - Serv-U MDTM Command Overflow
  • 18627 - GlobalSCAPE Secure FTP Server User Input Overflow
  • 18402 - Hummingbird InetD FTP Component (ftpdw.exe) Command Overflow
  • 40825 - MS09-053: Microsoft IIS FTPd NLST Command Remote Buffer Overflow (975191) (uncredentialed check)
  • 18142 - Intersoft NetTerm Netftpd USER Command Remote Overflow
  • 17718 - ProFTPD < 1.3.1rc1 mod_ctrls Module pr_ctrls_recv_request Function Local Overflow
  • 51366 - ProFTPD < 1.3.3d 'mod_sql' Buffer Overflow
  • 70446 - ProFTPD TELNET IAC Escape Sequence Remote Buffer Overflow
  • 15704 - SlimFTPd Multiple Command Handling Overflow

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file wsftp_overflows2.nasl version 1.14. For more plugins, visit the Nessus Plugin Library.

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