Intersoft NetTerm Netftpd USER Command Remote Overflow - Nessus

High   Plugin ID: 18142

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

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Plugin Overview

ID: 18142
Name: Intersoft NetTerm Netftpd USER Command Remote Overflow
Filename: netftpd.nasl
Vulnerability Published: 2005-04-26
This Plugin Published: 2005-04-26
Last Modification Time: 2018-11-15
Plugin Version: 1.18
Plugin Type: remote
Plugin Family: FTP
Dependencies: ftp_anonymous.nasl, ftpserver_detect_type_nd_version.nasl

Vulnerability Information

Severity: High
Vulnerability Published: 2005-04-26
Patch Published: N/A
CVE [?]: CVE-2005-1323
CPE [?]: cpe:/a:intersoft:netterm

Synopsis

The remote service is prone to a buffer overflow.

Description

The remote server is running NetTerm Netftpd server.

There is a buffer overflow condition in the remote version of this software. An attacker may exploit this flaw to execute arbitrary code on the remote host with the privileges of the FTP server.

Solution

Upgrade to a version of NetTerm greater than 5.1.1.

Public Exploits

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

Here's the list of publicly known exploits and PoCs for verifying the Intersoft NetTerm Netftpd USER Command Remote Overflow vulnerability:

  1. Metasploit: exploit/windows/ftp/netterm_netftpd_user
    [NetTerm NetFTPD USER Buffer Overflow]
  2. Exploit-DB: exploits/windows/remote/16735.rb
    [EDB-16735: NetTerm NetFTPD - 'USER' Remote Buffer 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:P/I:P/A:P/E:F/RL:OF/RC:C
CVSS Base Score:7.5 (High)
Impact Subscore:6.4
Exploitability Subscore:10.0
CVSS Temporal Score:6.2 (Medium)
CVSS Environmental Score:NA (None)
Modified Impact Subscore:NA
Overall CVSS Score:6.2 (Medium)

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Plugin Source

This is the netftpd.nasl nessus plugin source code. This script is Copyright (C) 2005-2018 Tenable Network Security, Inc. 

#
# (C) Tenable Network Security, Inc.
#

include( 'compat.inc' );

if(description)
{
 script_id(18142);
 script_version ("1.18");
 script_cve_id("CVE-2005-1323");
 script_bugtraq_id(13396);

 script_name(english:"Intersoft NetTerm Netftpd USER Command Remote Overflow");
 script_summary(english:"Checks for NetTerm Netftpd");

  script_set_attribute(
    attribute:'synopsis',
    value:'The remote service is prone to a buffer overflow.'
  );

  script_set_attribute(
    attribute:'description',
    value:"The remote server is running NetTerm Netftpd server.

There is a buffer overflow condition in the remote version of this
software. An attacker may exploit this flaw to execute arbitrary code
on the remote host with the privileges of the FTP server."
  );

  script_set_attribute(
    attribute:'solution',
    value: "Upgrade to a version of NetTerm greater than 5.1.1."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  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:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'NetTerm NetFTPD USER Buffer Overflow');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(
    attribute:'see_also',
    value:'https://www.securityfocus.com/archive/1/396959'
  );
  
  # https://web.archive.org/web/20050727084625/http://www.securenetterm.com/html/what_s_new.html
  script_set_attribute(
    attribute:'see_also',
    value:'http://www.nessus.org/u?5567affe'
    );

 script_set_attribute(attribute:"plugin_publication_date", value: "2005/04/26");
 script_set_attribute(attribute:"vuln_publication_date", value: "2005/04/26");
 script_cvs_date("Date: 2018/11/15 20:50:22");
  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe",value:"cpe:/a:intersoft:netterm");
  script_end_attributes();


 script_category(ACT_GATHER_INFO);
 script_copyright(english:"This script is Copyright (C) 2005-2018 Tenable Network Security, Inc.");
 script_family(english:"FTP");
 script_dependencie("ftp_anonymous.nasl", "ftpserver_detect_type_nd_version.nasl");
 script_require_ports("Services/ftp", 21);

 exit(0);
}

#
# The script code starts here
#

include("ftp_func.inc");

port = get_ftp_port(default: 21);

ftpbanner = get_ftp_banner(port:port);
if (! ftpbanner ) exit(1);
if ( egrep(pattern:"^220 NetTerm FTP server ready", string:ftpbanner) )
	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/netftpd.nasl
  • Windows:
    C:\ProgramData\Tenable\Nessus\nessus\plugins\netftpd.nasl
  • Mac OS X:
    /Library/Nessus/run/lib/nessus/plugins/netftpd.nasl

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How to Run

Here is how to run the Intersoft NetTerm Netftpd USER Command Remote Overflow 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 Intersoft NetTerm Netftpd USER Command Remote Overflow plugin ID 18142.
  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 netftpd.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

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

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

/opt/nessus/bin/nasl -T - netftpd.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 netftpd.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)
  • 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
  • 15857 - WS_FTP Server Multiple Command Remote Overflow DoS

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file netftpd.nasl version 1.18. For more plugins, visit the Nessus Plugin Library.

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