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

high Nessus Plugin ID 83187

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Synopsis

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

Description

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.

Solution

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

See Also

http://www.nessus.org/u?a0f7b5db

https://ics-cert.us-cert.gov/advisories/ICSA-14-093-01

Plugin Details

Severity: High

ID: 83187

File Name: scada_opc_factory_server_activex.nbin

Version: 1.221

Type: local

Family: SCADA

Published: 5/1/2015

Updated: 11/12/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

Vulnerability Information

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

Required KB Items: SMB/Registry/Enumerated

Exploit Ease: No known exploits are available

Patch Publication Date: 3/25/2014

Vulnerability Publication Date: 3/25/2014

Reference Information

CVE: CVE-2014-0789

BID: 66510

ICSA: 14-093-01