Detections
Analytics

Siemens WinCC and SIMATIC HMI Panels < 11.0.2.1 Lack of Authentication

high Nessus Network Monitor Plugin ID 720008

Synopsis

Siemens WinCC and SIMATIC HMI panels include a telnet daemon that does not require authentication.

Description

The TELNET daemon in Siemens WinCC flexible 2004, 2005, 2007, and 2008; WinCC V11 (aka TIA portal); the TP, OP, MP, Comfort Panels, and Mobile Panels SIMATIC HMI panels; WinCC V11 Runtime Advanced; and WinCC flexible Runtime does not perform authentication, which makes it easier for remote attackers to obtain access via a TCP session.

Solution

Perform vendor recommended mitigations and apply available vendor upgrades.

See Also

https://ics-cert.us-cert.gov/advisories/ICSA-12-030-01A,http://www.us-cert.gov/control_systems/pdf/ICSA-12-030-01.pdf,http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-345442.pdf

Plugin Details

Severity: High

ID: 720008

Family: SCADA

Published: 5/8/2019

Updated: 9/30/2019

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Critical

Base Score: 10

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

Vulnerability Information

Patch Publication Date: 4/18/2012

Vulnerability Publication Date: 4/18/2012

Reference Information

CVE: CVE-2011-4514