Automated Solutions Modbus/TCP Master OPC Server MODBUS buffer overflow

modbus-modbus-bo (64944) The risk level is classified as HighHigh Risk

Description:

The Automated Solutions Modbus/TCP Master OPC Server is vulnerable to a heap-based buffer overflow, caused by improper bounds checking when processing MODBUS protocol response packets. By sending a specially-crafted packet, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.

*CVSS:

Base Score: 7.5
  Access Vector: Network
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: Partial
  Integrity Impact: Partial
  Availability Impact: Partial
 
Temporal Score: 5.9
  Exploitability: Proof-of-Concept
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Access

Remedy:

Upgrade to the latest version of Modbus/TCP Master OPC Server (3.0.2 or later), available from the Automated Solutions Web site. See References.

References:

  • Automated Solutions Web site: Modbus Modbus/TCP Master OPC Server.
  • Offensive Security Exploit Database [01-25-2011]: Automated Solutions Modbus/TCP OPC Server Remote Heap Corruption PoC.
  • BID-45974: Automated Solutions Modbus/TCP OPC Server Remote Heap Corruption Vulnerability
  • CVE-2010-4709: Heap-based buffer overflow in Automated Solutions Modbus/TCP Master OPC Server before 3.0.2 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a MODBUS response packet with a crafted length field.
  • OSVDB ID: 70637: Automated Solutions Modbus/TCP Master OPC Server MODBUS Protocol Response Packet Remote Overflow
  • SA43029: Modbus/TCP Master OPC Server Packet Processing Buffer Overflow Vulnerability
  • US-CERT VU#768840: Automated Solutions Modbus/TCP Master OPC server Modbus TCP header vulnerability

Platforms Affected:

  • Automated Solutions Modbus/TCP Master OPC Server 3.0.1

Reported:

Jan 25, 2011

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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