Ericom AccessNow Server < 3.3.1.4095 Stack-Based Buffer Overflow - Nessus

Critical Plugin ID: 76311

This page contains detailed information about the Ericom AccessNow Server < 3.3.1.4095 Stack-Based Buffer Overflow Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents

hide

Plugin Overview
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 76311
Name: Ericom AccessNow Server < 3.3.1.4095 Stack-Based Buffer Overflow
Filename: ericom_accessnow_3_3_1_4095.nasl
Vulnerability Published: 2014-06-02
This Plugin Published: 2014-06-30
Last Modification Time: 2022-04-11
Plugin Version: 1.7
Plugin Type: remote
Plugin Family: CGI abuses
Dependencies: ericom_accessnow_detect.nbin
Required KB Items [?]: www/ericomaccessnow

Vulnerability Information

Severity: Critical
Vulnerability Published: 2014-06-02
Patch Published: 2014-06-02
CVE [?]: CVE-2014-3913
CPE [?]: cpe:/a:ericom:accessnow_server

Synopsis

The remote host is affected by a buffer overflow vulnerability.

Description

The remote web server has an Ericom AccessNow server product prior to version 3.3.1.4095. It is, therefore, affected by a stack-based buffer overflow vulnerability that can be triggered by requesting a non-existent file. Successful exploitation can result in remote code execution or a denial of service condition.

Solution

Upgrade to AccessNow version 3.3.1.4095 or later.

Public Exploits

Target Network Port(s): 8080
Target Asset(s): Services/www
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 Ericom AccessNow Server < 3.3.1.4095 Stack-Based Buffer Overflow vulnerability:

Metasploit: exploit/windows/http/ericom_access_now_bof
[Ericom AccessNow Server Buffer Overflow]
Exploit-DB: exploits/windows/remote/33817.rb
[EDB-33817: Ericom AccessNow Server - 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: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)

Go back to menu.

Plugin Source

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(76311);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");

  script_cve_id("CVE-2014-3913");
  script_bugtraq_id(67777);

  script_name(english:"Ericom AccessNow Server < 3.3.1.4095 Stack-Based Buffer Overflow");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by a buffer overflow vulnerability.");
  script_set_attribute(attribute:"description", value:
"The remote web server has an Ericom AccessNow server product prior to
version 3.3.1.4095. It is, therefore, affected by a stack-based buffer
overflow vulnerability that can be triggered by requesting a
non-existent file. Successful exploitation can result in remote code
execution or a denial of service condition.");
  script_set_attribute(attribute:"see_also", value:"https://www.ericom.com/security-ERM-2014-610.asp");
  script_set_attribute(attribute:"solution", value:
"Upgrade to AccessNow version 3.3.1.4095 or later.");
  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:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Ericom AccessNow Server Buffer Overflow');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/06/02");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/06/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/30");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:ericom:accessnow_server");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2014-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ericom_accessnow_detect.nbin");
  script_require_keys("www/ericomaccessnow");
  script_require_ports("Services/www", 8080);

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");
include("webapp_func.inc");

port = get_http_port(default:8080);

appname = "Ericom AccessNow";

install = get_install_from_kb(
  appname      : 'ericomaccessnow',
  port         : port,
  exit_on_fail : TRUE
);

dir = install["dir"];
version = install["ver"];

install_loc = build_url(port:port, qs:dir + "/");

if (version == UNKNOWN_VER) audit(AUDIT_UNKNOWN_WEB_APP_VER, appname, install_loc);

fixed = '3.3.1.4095';

if (ver_compare(ver:version, fix:fixed, strict:FALSE) == -1)
{

  if (report_verbosity > 0)
  {
    report =
      '\n  URL               : ' +install_loc+
      '\n  Installed version : ' +version+
      '\n  Fixed version     : ' + fixed + '\n';
    security_hole(port:port, extra:report);
  }
  else security_hole(port);
}
else audit(AUDIT_WEB_APP_NOT_AFFECTED, appname,  install_loc, version);

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

Linux / Unix:
/opt/nessus/lib/nessus/plugins/ericom_accessnow_3_3_1_4095.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\ericom_accessnow_3_3_1_4095.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/ericom_accessnow_3_3_1_4095.nasl

Go back to menu.

How to Run

Here is how to run the Ericom AccessNow Server < 3.3.1.4095 Stack-Based Buffer Overflow as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

Click to start a New Scan.
Select Advanced Scan.
Navigate to the Plugins tab.
On the top right corner click to Disable All plugins.
On the left side table select CGI abuses plugin family.
On the right side table select Ericom AccessNow Server < 3.3.1.4095 Stack-Based Buffer Overflow plugin ID 76311.
Specify the target on the Settings tab and click to Save the scan.
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 ericom_accessnow_3_3_1_4095.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a ericom_accessnow_3_3_1_4095.nasl -t <IP/HOST>

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

/opt/nessus/bin/nasl -T - ericom_accessnow_3_3_1_4095.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 ericom_accessnow_3_3_1_4095.nasl -t <IP/HOST>

Go back to menu.

References

BID | SecurityFocus Bugtraq ID:

67777

See also:

Similar and related Nessus plugins:

63563 - Nagios Core history.cgi Multiple Parameter Buffer Overflow
69348 - PHP 5.5.x < 5.5.1 xml.c Buffer Overflow
109579 - PHP 7.2.x < 7.2.5 Stack Buffer Overflow
110557 - VX Search HTTP POST Request Handling Remote Stack Buffer Overflow
25681 - SAP DB / MaxDB Web Server DBM_INTERN_TEST Event Buffer Overflow
25117 - XAMPP ADOdb mssql_connect Remote Buffer Overflow

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file ericom_accessnow_3_3_1_4095.nasl version 1.7. For more plugins, visit the Nessus Plugin Library.

Go back to menu.

Ericom AccessNow Server < 3.3.1.4095 Stack-Based Buffer Overflow - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

Nessus Plugin Library

Solving Problems with Office 365 Email from GoDaddy

Empire Module Library

CrackMapExec Module Library

Metasploit Android Modules

Top 16 Active Directory Vulnerabilities

Top 10 Vulnerabilities: Internal Infrastructure Pentest

Terminal Escape Injection

Cisco Password Cracking and Decrypting Guide

Capture Passwords using Wireshark

SSH Brute Force Attack Tool using PuTTY / Plink (ssh-putty-brute.ps1)

SMB Brute Force Attack Tool in PowerShell (SMBLogin.ps1)

Port Scanner in PowerShell (TCP/UDP)

Nessus CSV Parser and Extractor

Default Password Scanner (default-http-login-hunter.sh)