Ability FTP Server Multiple Command Remote Buffer Overflows - Nessus

Critical   Plugin ID: 15628

This page contains detailed information about the Ability FTP Server Multiple Command Remote Buffer Overflows 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: 15628
Name: Ability FTP Server Multiple Command Remote Buffer Overflows
Filename: ability_ftp_overflow.nasl
Vulnerability Published: 2004-10-22
This Plugin Published: 2004-11-04
Last Modification Time: 2018-11-15
Plugin Version: 1.17
Plugin Type: remote
Plugin Family: FTP
Dependencies: ftpserver_detect_type_nd_version.nasl

Vulnerability Information

Severity: Critical
Vulnerability Published: 2004-10-22
Patch Published: N/A
CVE [?]: CVE-2004-1626, CVE-2004-1627
CPE [?]: N/A

Synopsis

The remote FTP server is vulnerable to multiple remote buffer overflow attacks.

Description

The remote host is running Ability FTP Server. It is reported that the remote version of this software is prone to a remote buffer overflow attack via the 'STOR' and 'APPE' commands. An attacker, exploiting this flaw, would only need to be able to craft and send a query to the FTP server on its service port (usually 21).

Solution

Upgrade to Ability FTP Server version 2.35 or newer.

Public Exploits

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

Here's the list of publicly known exploits and PoCs for verifying the Ability FTP Server Multiple Command Remote Buffer Overflows vulnerability:

  1. Metasploit: exploit/windows/ftp/ability_server_stor
    [Ability Server 2.34 STOR Command Stack Buffer Overflow]

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.

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

#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if(description)
{
 script_id(15628);
 script_cve_id("CVE-2004-1626", "CVE-2004-1627");
 script_bugtraq_id(11508);
 script_xref(name:"Secunia", value:"12941");

 script_version("1.17");
 
 script_name(english:"Ability FTP Server Multiple Command Remote Buffer Overflows");
 script_summary(english:"Gets the version of the remote Ability FTP server");

 script_set_attribute(attribute:"synopsis", value:
"The remote FTP server is vulnerable to multiple remote buffer
overflow attacks. ");

 script_set_attribute(attribute:"description", value:
"The remote host is running Ability FTP Server. It is reported
that the remote version of this software is prone to a remote buffer
overflow attack via the 'STOR' and 'APPE' commands. An attacker,
exploiting this flaw, would only need to be able to craft and send a
query to the FTP server on its service port (usually 21).");

 script_set_attribute(attribute:"see_also", value:
"https://seclists.org/bugtraq/2004/Oct/252");
 # http://web.archive.org/web/20060921101554/http://lists.virus.org/dw-0day-0412/msg00004.html
 script_set_attribute(attribute:"see_also", value:
"http://www.nessus.org/u?cbaf8896");
 
 script_set_attribute(attribute:"solution", value:
"Upgrade to Ability FTP Server version 2.35 or newer.");
 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:'Ability Server 2.34 STOR Command Stack Buffer Overflow');
 script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
 script_set_attribute(attribute:"plugin_publication_date", value: "2004/11/04");
 script_set_attribute(attribute:"vuln_publication_date", value: "2004/10/22");
 script_cvs_date("Date: 2018/11/15 20:50:22");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_end_attributes();

 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);
}

# Check starts here

include("ftp_func.inc");


port = get_ftp_port(default: 21);

banner = get_ftp_banner(port:port);
if ( ! banner ) exit(1, "Cannot read FTP banner on port "+port+".");

if ( egrep(pattern:"^220 Welcome to Code-Crafters - Ability Server ([0-1]\..*|2\.([0-2]|3[0-4]))[^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/ability_ftp_overflow.nasl
  • Windows:
    C:\ProgramData\Tenable\Nessus\nessus\plugins\ability_ftp_overflow.nasl
  • Mac OS X:
    /Library/Nessus/run/lib/nessus/plugins/ability_ftp_overflow.nasl

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How to Run

Here is how to run the Ability FTP Server Multiple Command Remote Buffer Overflows 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 Ability FTP Server Multiple Command Remote Buffer Overflows plugin ID 15628.
  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 ability_ftp_overflow.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

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

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

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

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References

BID | SecurityFocus Bugtraq ID: Secunia Advisory: See also: Similar and related Nessus plugins:
  • 40825 - MS09-053: Microsoft IIS FTPd NLST Command Remote Buffer Overflow (975191) (uncredentialed check)
  • 51366 - ProFTPD < 1.3.3d 'mod_sql' Buffer Overflow
  • 70446 - ProFTPD TELNET IAC Escape Sequence Remote Buffer Overflow

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file ability_ftp_overflow.nasl version 1.17. For more plugins, visit the Nessus Plugin Library.

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