RealWin < 2.1.10 Multiple Packet Type Processing Overflows - Nessus

Critical   Plugin ID: 50687

This page contains detailed information about the RealWin < 2.1.10 Multiple Packet Type Processing 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

ID: 50687
Name: RealWin < 2.1.10 Multiple Packet Type Processing Overflows
Filename: realwin_2_1_10.nbin
Vulnerability Published: 2010-10-15
This Plugin Published: 2010-11-23
Last Modification Time: 2022-02-14
Plugin Version: 1.51
Plugin Type: local
Plugin Family: SCADA
Dependencies: scada_app_realwin_detect.nbin
Required KB Items [?]: SCADA/Apps/RealFlex/RealWin/Installed

Vulnerability Information

Severity: Critical
Vulnerability Published: 2010-10-15
Patch Published: 2010-11-05
CVE [?]: CVE-2010-4142
CPE [?]: N/A

Synopsis

The remote Windows host contains an application that is prone to multiple buffer overflow attacks.

Description

The installed version of RealWin is earlier than 2.1.10 (2.1 Build 6.1.10.10) and thus reportedly affected by two stack-based overflow vulnerabilities involving the use of 'sprintf()' in the 'SCPC_INITIALIZE()' and 'SCPC_INITIALIZE_RF()' functions on one hand and 'strcpy()' in the 'SCPC_TXTEVENT()' function on the other.

Using a specially crafted sequence of packets to the HMI service, which listens on TCP port 912, an unauthenticated remote attacker who can connect to the server can leverage this issue to crash the affected service or to execute code on the affected host with SYSTEM-level privileges.

Solution

Upgrade to RealWin version 2.1.10 (2.1 Build 6.1.10.10).

Public Exploits

Target Network Port(s): N/A
Target Asset(s): N/A
Exploit Available: True (Metasploit Framework, Exploit-DB, GitHub, Immunity Canvas, Core Impact)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the RealWin < 2.1.10 Multiple Packet Type Processing Overflows vulnerability:

  1. Metasploit: exploit/windows/scada/realwin_scpc_initialize_rf
    [DATAC RealWin SCADA Server SCPC_INITIALIZE_RF Buffer Overflow]
  2. Metasploit: exploit/windows/scada/realwin_scpc_initialize
    [DATAC RealWin SCADA Server SCPC_INITIALIZE Buffer Overflow]
  3. Metasploit: exploit/windows/scada/realwin_scpc_txtevent
    [DATAC RealWin SCADA Server SCPC_TXTEVENT Buffer Overflow]
  4. Exploit-DB: exploits/windows/dos/15259.txt
    [EDB-15259: DATAC RealWin SCADA Server 2.0 (Build 6.1.8.10) - Buffer Overflow]
  5. Exploit-DB: exploits/windows/remote/16382.rb
    [EDB-16382: DATAC RealWin SCADA Server 2.0 (Build 6.1.8.10) - SCPC_INITIALIZE Buffer Overflow (Metasploit)]
  6. Exploit-DB: exploits/windows/remote/16383.rb
    [EDB-16383: DATAC RealWin SCADA Server 2.0 (Build 6.1.8.10) - SCPC_INITIALIZE_RF Buffer Overflow (Metasploit)]
  7. Exploit-DB: exploits/windows/remote/16384.rb
    [EDB-16384: DATAC RealWin SCADA Server 2.0 (Build 6.1.8.10) - SCPC_TXTEVENT Buffer Overflow (Metasploit)]
  8. GitHub: https://github.com/offensive-security/exploitdb-bin-sploits/blob/master/bin-sploits/15259.zip
    [EDB-15259]
  9. Immunity Canvas: White_Phosphorus

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

The realwin_2_1_10.nbin Nessus plugin is distributed in a propriatory binary format and its source code is protected. This script is Copyright (C) 2010-2022 and is owned by Tenable, Inc. or an Affiliate thereof.

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

  • Linux / Unix:
    /opt/nessus/lib/nessus/plugins/realwin_2_1_10.nbin
  • Windows:
    C:\ProgramData\Tenable\Nessus\nessus\plugins\realwin_2_1_10.nbin
  • Mac OS X:
    /Library/Nessus/run/lib/nessus/plugins/realwin_2_1_10.nbin

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How to Run

Here is how to run the RealWin < 2.1.10 Multiple Packet Type Processing 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 SCADA plugin family.
  6. On the right side table select RealWin < 2.1.10 Multiple Packet Type Processing Overflows plugin ID 50687.
  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 realwin_2_1_10.nbin -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a realwin_2_1_10.nbin -t <IP/HOST>

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

/opt/nessus/bin/nasl -T - realwin_2_1_10.nbin -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 realwin_2_1_10.nbin -t <IP/HOST>

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References

BID | SecurityFocus Bugtraq ID: CERT | Computer Emergency Response Team: ICSA | ICS Advisory: See also: Similar and related Nessus plugins:
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  • 55631 - Sielco Sistemi Winlog Pro < 2.07.01 TCP/IP Server Runtime.exe Packet Handling Remote Overflow

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file realwin_2_1_10.nbin version 1.51. For more plugins, visit the Nessus Plugin Library.

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