Schneider Electric OPC Factory Server (OFS) < 3.5 SP1 ActiveX Object Multiple Buffer Overflows DoS

High Nessus Plugin ID 83187


The remote host is affected by a denial of service vulnerability.


The Schneider Electric OPC Factory Server installed on the remote host is prior to version 3.5 SP1. It is, therefore, affected by a denial of service vulnerability due to multiple buffer overflow errors in the 'opcautosa2.dll' ActiveX control. The buffer overflows are due to improper validation of user-supplied input when handling long arguments in the Connect() and GetOPCServers() functions. A remote attacker can exploit this, via a specially crafted web page, to reboot the server, resulting in a denial of service.


Upgrade to Schneider Electric OPC Factory Server (OFS) version 3.5 SP1 or later.

See Also

Plugin Details

Severity: High

ID: 83187

File Name: scada_opc_factory_server_activex.nbin

Version: $Revision: 1.65 $

Type: local

Family: SCADA

Published: 2015/05/01

Modified: 2018/02/06

Dependencies: 13855

Risk Information

Risk Factor: High


Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Vulnerability Information

CPE: cpe:/h:schneider-electric:opc_factory_server_tlxcdstofs, cpe:/h:schneider-electric:opc_factory_server_tlxcdltofs, cpe:/h:schneider-electric:opc_factory_server_tlxcdlfofs, cpe:/h:schneider-electric:opc_factory_server_tlxcdluofs, cpe:/h:schneider-electric:opc_factory_server_tlxcdsuofs

Required KB Items: SMB/Registry/Enumerated

Patch Publication Date: 2014/03/25

Vulnerability Publication Date: 2014/03/25

Reference Information

CVE: CVE-2014-0789

BID: 66510

OSVDB: 105035

ICSA: 14-093-01