(PT-2018-06) Positive Technologies Security Advisory
Authentication Bypass in Hirschmann Automation and Control GmbH Classic Platform Switches

Vulnerable products

RS
Version: all versions
RSR
Version: all versions
RSB
Version: all versions
MACH100
Version: all versions
MACH1000
Version: all versions
MACH4000
Version: all versions
MS
Version: all versions
OCTOPUS
Version: all versions

Link:
http://www.hirschmann.com/

Severity level

Severity level: High
Impact: Authentication Bypass
Access Vector: Remote

CVSS v3:
Base Score: 9.8
Vector: (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

CVE: CVE-2018-5469

Vulnerability description

The specialists of the Positive Research center have detected an Authentication Bypass vulnerability in Hirschmann Automation and Control GmbH Classic Platform Switches.

Vulnerability in the web interface of Belden Hirschmann RS, RSR, RSB, MACH100, MACH1000, MACH4000, MS, and OCTOPUS Classic Platform Switches, due to improper restriction of excessive authentication attempts, allows attackers to bruteforce authentication.

How to fix

Use the recommendations

Advisory status

16.03.2017 - Vendor gets vulnerability details
06.03.2018 - Vendor releases fixed version and details
28.04.2018 - Public disclosure

Credits

The vulnerability was detected by Ilya Karpov, Evgeniy Druzhinin, and Damir Zainullin, Positive Research Center (Positive Technologies Company)

References

http://en.securitylab.ru/lab/PT-2018-06

Reports on the vulnerabilities previously discovered by Positive Research:

https://www.ptsecurity.com/
https://en.securitylab.ru/lab/

About Positive Technologies

Positive Technologies is a leading digital security firm with over 15 years of experience in 360° protection of critical IT systems against the most advanced cyberthreats. State-of-the-art solutions are developed at the company's research center—one of the largest in Europe. Positive Technologies experts have helped to identify and fix over 250 zero-day vulnerabilities in products from Cisco, Google, Honeywell, Huawei, Microsoft, Oracle, SAP, Schneider Electric, Siemens, and others, earning a reputation for world-class expertise in protection of devices and infrastructures at all scales from ATMs to nuclear power stations. Findings by Positive Technologies researchers are used for updating the MaxPatrol knowledge base and for development of security solutions including PT Application Firewall, PT Application Inspector, MaxPatrol. These products allow securing web applications, evaluating network protection, blocking attacks in real time, ensuring compliance with industry and national standards, and training security specialists. Positive Technologies is the organizer of the annual Positive Hack Days international forum and security competition.