Multiple stack-based buffer overflows in ModbusDrv.exe in Schneider Electric Modbus Serial Driver 1.10 through 3.2 allow remote attackers to execute arbitrary code via a large buffer-size value in a Modbus Application Header.
CVSS Severity (version 2.0):
Impact Subscore: 10.0
Exploitability Subscore: 8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service
"The following Schneider Electric products bundle the Schneider Electric Modbus Serial Driver (ModbusDrv.exe), which is started when attempting to connect to a Programmable Logic Controller (PLC) via the serial port of a personal computer:
TwidoSuite Versions 2.31.04 and earlier,
PowerSuite Versions 2.6 and earlier,
SoMove Versions 1.7 and earlier,
SoMachine Versions 2.0, 3.0, 3.1, and 3.0 XS,
Unity Pro Versions 7.0 and earlier,
UnityLoader Versions 2.3 and earlier,
Concept Versions 2.6 SR7 and earlier,
ModbusCommDTM sl Versions 2.1.2 and earlier,
PL7 Versions 4.5 SP5 and earlier,
SFT2841 Versions 14, 13.1 and earlier, and
OPC Factory Server Versions 3.50 and earlier.
Modbus Serial Driver versions that are affected:
Windows XP 32 bit V1.10 IE v37,
Windows Vista 32 bit V2.2 IE12,
Windows 7 32 bit V2.2 IE12, and
Windows 7 64 bit V3.2 IE12."
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US-CERT Vulnerability Note: