Now SMS/MMS Gateway < 2008.02.22 Multiple Remote Overflows - Nessus

Critical Plugin ID: 32481

This page contains detailed information about the Now SMS/MMS Gateway < 2008.02.22 Multiple Remote Overflows 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
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 32481
Name: Now SMS/MMS Gateway < 2008.02.22 Multiple Remote Overflows
Filename: nowsms_2008_02_22.nasl
Vulnerability Published: N/A
This Plugin Published: 2008-06-02
Last Modification Time: 2018-11-15
Plugin Version: 1.16
Plugin Type: local
Plugin Family: Windows
Dependencies: smb_hotfixes.nasl
Required KB Items [?]: SMB/Registry/Enumerated

Vulnerability Information

Severity: Critical
Vulnerability Published: N/A
Patch Published: N/A
CVE [?]: CVE-2008-0871
CPE [?]: N/A

Synopsis

A remote Windows host contains a program that is affected by multiple buffer overflow vulnerabilities.

Description

The remote host is running Now SMS/MMS Gateway, a tool for connecting to SMS and/or MMS messaging providers and managing GSM modems.

The web interface component of the version of Now SMS/MMS Gateway installed on the remote host contains a stack-based buffer overflow that can be triggered using a specially crafted HTTP Authorization request header. An unauthenticated, remote attacker can leverage this issue to crash the affected service or to execute arbitrary code on the affected host subject to the privileges under which the service operates, SYSTEM by default.

In addition, there is similar buffer overflow in the application's SMPP server, which allocates a stack buffer of 4 KB for incoming packets but fails to check their actual size. By default, though, this service is not enabled.

Solution

Upgrade to Now SMS/MMS Gateway version 2008.02.22 or later.

Public Exploits

Target Network Port(s): 139, 445
Target Asset(s): N/A
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 Now SMS/MMS Gateway < 2008.02.22 Multiple Remote Overflows vulnerability:

Metasploit: exploit/windows/http/nowsms
[Now SMS/MMS Gateway Buffer Overflow]
Exploit-DB: exploits/windows/remote/5695.cpp
[EDB-5695: Now SMS/Mms Gateway 5.5 - Remote Buffer Overflow]
Exploit-DB: exploits/windows/remote/16779.rb
[EDB-16779: Now SMS/Mms Gateway - 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)

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Plugin Source

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



include("compat.inc");

if (description)
{
  script_id(32481);
  script_version("1.16");
 script_cvs_date("Date: 2018/11/15 20:50:27");

  script_cve_id("CVE-2008-0871");
  script_bugtraq_id(27896);
  script_xref(name:"EDB-ID", value:"5695");
  script_xref(name:"Secunia", value:"29003");

  script_name(english:"Now SMS/MMS Gateway < 2008.02.22 Multiple Remote Overflows");
  script_summary(english:"Checks version of mmsc.exe");

 script_set_attribute(attribute:"synopsis", value:
"A remote Windows host contains a program that is affected by multiple
buffer overflow vulnerabilities.");
 script_set_attribute(attribute:"description", value:
"The remote host is running Now SMS/MMS Gateway, a tool for connecting
to SMS and/or MMS messaging providers and managing GSM modems.

The web interface component of the version of Now SMS/MMS Gateway
installed on the remote host contains a stack-based buffer overflow
that can be triggered using a specially crafted HTTP Authorization
request header. An unauthenticated, remote attacker can leverage this
issue to crash the affected service or to execute arbitrary code on
the affected host subject to the privileges under which the service
operates, SYSTEM by default.

In addition, there is similar buffer overflow in the application's
SMPP server, which allocates a stack buffer of 4 KB for incoming
packets but fails to check their actual size. By default, though, this
service is not enabled.");
 script_set_attribute(attribute:"see_also", value:"http://aluigi.altervista.org/adv/nowsmsz-adv.txt");
 script_set_attribute(attribute:"see_also", value:"https://support.nowsms.com/discus/messages/53/23641.html" );
 script_set_attribute(attribute:"see_also", value:"http://blog.nowsms.com/2008/02/nowsms-2008-and-important-security.html" );
 script_set_attribute(attribute:"solution", value:"Upgrade to Now SMS/MMS Gateway version 2008.02.22 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:'Now SMS/MMS Gateway Buffer Overflow');
 script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
 script_cwe_id(119);

 script_set_attribute(attribute:"plugin_publication_date", value:"2008/06/02");

script_set_attribute(attribute:"plugin_type", value:"local");
script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");
  script_copyright(english:"This script is Copyright (C) 2008-2018 Tenable Network Security, Inc.");
  script_dependencies("smb_hotfixes.nasl");
  script_require_keys("SMB/Registry/Enumerated");
  script_require_ports(139, 445);
  exit(0);
}

#

include("audit.inc");
include("global_settings.inc");
include("smb_func.inc");

if (!get_kb_item("SMB/Registry/Enumerated")) exit(1, "KB 'SMB/Registry/Enumerated' not set to TRUE.");


# Connect to the appropriate share.
port    =  kb_smb_transport();
login   =  kb_smb_login();
pass    =  kb_smb_password();
domain  =  kb_smb_domain();

if(! smb_session_init()) audit(AUDIT_FN_FAIL, 'smb_session_init');

rc = NetUseAdd(login:login, password:pass, domain:domain, share:"IPC$");
if (rc != 1)
{
  NetUseDel();
  audit(AUDIT_SHARE_FAIL,"IPC$");
}


# Connect to remote registry.
hklm = RegConnectRegistry(hkey:HKEY_LOCAL_MACHINE);
if (isnull(hklm))
{
  NetUseDel();
  audit(AUDIT_REG_FAIL);
}


# Determine where it's installed.
path = NULL;

key = "SOFTWARE\Classes\SOFTWARE\NowSMS\NowSMS";
key_h = RegOpenKey(handle:hklm, key:key, mode:MAXIMUM_ALLOWED);
if (!isnull(key_h))
{
  value = RegQueryValue(handle:key_h, item:"InstallDirectory");
  if (!isnull(value)) path = value[1];

  RegCloseKey(handle:key_h);
}
RegCloseKey(handle:hklm);
if (isnull(path))
{
  RegCloseKey(handle:hklm);
  NetUseDel();
  exit(0);
}


# Grab the version from mmsc.exe.
share = ereg_replace(pattern:"^([A-Za-z]):.*", replace:"\1$", string:path);
exe =  ereg_replace(pattern:"^[A-Za-z]:(.*)", replace:"\1\mmsc.exe", string:path);
NetUseDel(close:FALSE);

rc = NetUseAdd(login:login, password:pass, domain:domain, share:share);
if (rc != 1)
{
  NetUseDel();
  audit(AUDIT_SHARE_FAIL,share);
}

fh = CreateFile(
  file:exe,
  desired_access:GENERIC_READ,
  file_attributes:FILE_ATTRIBUTE_NORMAL,
  share_mode:FILE_SHARE_READ,
  create_disposition:OPEN_EXISTING
);
version = NULL;
if (!isnull(fh))
{
  fsize = GetFileSize(handle:fh);
  if (fsize < 250000) off = 0;
  else off = fsize - 250000;

  while (fsize > 0 && off <= fsize && isnull(version))
  {
    data = ReadFile(handle:fh, length:16384, offset:off);
    if (strlen(data) == 0) break;
    data = str_replace(find:raw_string(0), replace:"", string:data);

    while (strlen(data) && "Now SMS/MMS Gateway v" >< data)
    {
      data = strstr(data, "Now SMS/MMS Gateway v") - "Now SMS/MMS Gateway v";
      blob = data - strstr(data, '\r\n');

      pat = "^([12][0-9]{3}\.[01][0-9]\.[0-3][0-9])$";
      if (ereg(pattern:pat, string:blob))
      {
        version = ereg_replace(pattern:pat, replace:"\1", string:blob);
      }
      if (version) break;
    }
    off += 16383;
  }
  CloseFile(handle:fh);
}
NetUseDel();


# Check the version number.
if (!isnull(version))
{
  ver = split(version, sep:'.', keep:FALSE);
  for (i=0; i<max_index(ver); i++)
    ver[i] = int(ver[i]);

  fix = split("2008.02.22", sep:'.', keep:FALSE);
  for (i=0; i<max_index(fix); i++)
    fix[i] = int(fix[i]);

  for (i=0; i<max_index(ver); i++)
    if ((ver[i] < fix[i]))
    {
      if (report_verbosity)
      {
        report = string(
          "\n",
          "Now SMS/MMS Gateway v", version, " is installed under :\n",
          "\n",
          "  ", path, "\n"
        );
        security_hole(port:port, extra:report);
      }
      else security_hole(port);
      break;
    }
    else if (ver[i] > fix[i])
      break;
}

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

Linux / Unix:
/opt/nessus/lib/nessus/plugins/nowsms_2008_02_22.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\nowsms_2008_02_22.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/nowsms_2008_02_22.nasl

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How to Run

Here is how to run the Now SMS/MMS Gateway < 2008.02.22 Multiple Remote Overflows 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 Windows plugin family.
On the right side table select Now SMS/MMS Gateway < 2008.02.22 Multiple Remote Overflows plugin ID 32481.
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 nowsms_2008_02_22.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a nowsms_2008_02_22.nasl -t <IP/HOST>

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

/opt/nessus/bin/nasl -T - nowsms_2008_02_22.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 nowsms_2008_02_22.nasl -t <IP/HOST>

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References

BID | SecurityFocus Bugtraq ID:

27896

Secunia Advisory:

29003

CWE | Common Weakness Enumeration:

CWE-119 (Weakness) Improper Restriction of Operations within the Bounds of a Memory Buffer

See also:

Similar and related Nessus plugins:

81168 - Default Password (changemenow) for 'root' Account
76311 - Ericom AccessNow Server < 3.3.1.4095 Stack-Based Buffer Overflow

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file nowsms_2008_02_22.nasl version 1.16. For more plugins, visit the Nessus Plugin Library.

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Now SMS/MMS Gateway < 2008.02.22 Multiple Remote Overflows - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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