SCADA Vulnerabilities & Exposures (SVE)

CRITIFENCE® SCADA Vulnerabilities and Exposures Database (SVE)

[SVE-363505483] Siemens SIMATIC WinCC Flexible Weakly Protected Credentials Vulnerability

Date Type Platform Author EDB-ID CVE-ID OSVDB-ID Download App SIS Signature
2016-06-09HMISiemens SIMATIC WinCC flexibleGleb Gritsai, Roman IlinN/A2015-1358N/AN/AN/A

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# Siemens SIMATIC WinCC Flexible Weakly Protected Credentials Vulnerability
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### OVERVIEW

Siemens has identified a weakly protected credentials vulnerability in SIMATIC WinCC flexible. Gleb Gritsai and Roman Ilin from Positive Technologies reported this issue directly to Siemens. Siemens has produced an update to mitigate this vulnerability.

This vulnerability could be exploited remotely.




### AFFECTED PRODUCTS

Siemens reports that the vulnerability affects the following product:

SIMATIC WinCC flexible: All versions prior to SP3 Up7.






### IMPACT

Attackers capturing network traffic of the remote management module could possibly reconstruct user credentials.

Impact to individual organizations depends on many factors that are unique to each organization. NCCIC/ICS-CERT recommends that organizations evaluate the impact of this vulnerability based on their operational environment, architecture, and product implementation.






### BACKGROUND

Siemens is a multinational company headquartered in Munich, Germany.

The affected product. SIMATIC WinCC flexible, is a software package used for visualization and machine or small system operations. This product runs on standard PCs or on Siemens panel PCs. This product is deployed across several sectors including: Chemical, Energy, Food and Agriculture, and Water and Wastewater Systems. Siemens estimates that these products are used worldwide.





### VULNERABILITY CHARACTERIZATION


# VULNERABILITY OVERVIEW

INSUFFICIENTLY PROTECTED CREDENTIALS

The remote management module of SIMATIC WinCC flexible panels and SIMATIC WinCC flexible runtime transmits weakly protected credentials over the network. Attackers capturing network traffic of the remote management module could possibly reconstruct the credentials.

CVE-2015-1358 has been assigned to this vulnerability. A CVSS v3 base score of 3.7 has been calculated; the CVSS vector string is (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N).






### VULNERABILITY DETAILS


# EXPLOITABILITY

This vulnerability could be exploited remotely.


# EXISTENCE OF EXPLOIT

No known public exploits specifically target this vulnerability.


# DIFFICULTY

An attacker with high skill would be able to exploit this vulnerability.





### MITIGATION

Siemens provides Update 7 for SIMATIC WinCC flexible 2008 SP3, which fixes the vulnerability, and recommends users to update to the new version. Update 7 can be found at the following location on the Siemens web site:

https://support.industry.siemens.com/cs/ww/en/view/58860033



For more information on this vulnerability and more detailed mitigation instructions, please see Siemens Security Advisory SSA-526760 at the following location:

http://www.siemens.com/cert/en/cert-security-advisories.htm



As a general security measure Siemens strongly recommends protecting network access to devices running SIMATIC WinCC flexible with appropriate mechanisms. Siemens advises configuring the environment according to Siemens operational guidelines in order to run the devices in a protected IT environment.