Detections
Analytics

Siemens SINAMICS S/G Controllers < 4.6.11 Authentication Bypass

critical Nessus Network Monitor Plugin ID 720043

Synopsis

Siemens SINAMICS S/G controllers with do not require authentication for FTP and TELNET sessions.

Description

Siemens SINAMICS S/G controllers with firmware before 4.6.11 do not require authentication for FTP and TELNET sessions, which allows remote attackers to bypass intended access restrictions via TCP traffic to port (1) 21 or (2) 23.

Solution

Perform vendor recommended mitigations and apply available vendor upgrades.

See Also

http://ics-cert.us-cert.gov/advisories/ICSA-13-338-01,http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-742938.pdf,https://ics-cert.us-cert.gov/advisories/ICSA-13-338-01

Plugin Details

Severity: Critical

ID: 720043

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

Temporal Score: 7.4

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

Vulnerability Information

Patch Publication Date: 12/4/2013

Vulnerability Publication Date: 12/4/2013

Reference Information

CVE: CVE-2013-6920