SCADA Vulnerabilities & Exposures (SVE)

CRITIFENCE® SCADA Vulnerabilities and Exposures Database (SVE)

[SVE-161030777] Siemens SCALANCE S613 Denial-of-Service Vulnerability

Date Type Platform Author EDB-ID CVE-ID OSVDB-ID Download App SIS Signature
2016-04-12OTHERSiemens SCALANCE firewallSiemensN/A2016-3963N/AN/AN/A

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# Siemens SCALANCE S613 Denial-of-Service Vulnerability
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### OVERVIEW

Siemens has identified a resource exhaustion vulnerability that causes a denial-of-service condition in the Siemens SCALANCE S613 device. Siemens recommends that customers contact Siemens customer support in order to obtain advice on a solution for the customer's specific environment.

This vulnerability could be exploited remotely.




### AFFECTED PRODUCTS

The following Siemens SCALANCE versions are affected:

SCALANCE S613 (MLFB: 6GK5613-0BA00-2AA3): All versions.






### IMPACT

An attacker exploiting this vulnerability can cause the device to enter a state that requires a manual reboot to recover.
Impact to individual organizations depends on many factors that are unique to each organization.






### BACKGROUND

Siemens is a multinational company headquartered in Munich, Germany.

The affected product, Siemens SCALANCE firewall, is used to protect trusted industrial networks from untrusted networks. It allows filtering of incoming and outgoing network connections in different ways. According to Siemens, Siemens SCALANCE is deployed across several sectors including Chemical, Critical Manufacturing, Defense Industrial Base, Energy, Transportation Systems, and Water and Wastewater Systems. Siemens estimates that this product is used worldwide.





### VULNERABILITY CHARACTERIZATION


# VULNERABILITY OVERVIEW

RESOURCE EXHAUSTION

Certain legitimate messages sent to Port 443/TCP could cause a denial-of-service condition affecting the integrated web server of affected devices. A manual reboot is required to recover the web server of the device.

CVE-2016-3963 has been assigned to this vulnerability. A CVSS v3 base score of 5.3 has been calculated; the CVSS vector string is (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).






### VULNERABILITY DETAILS


# EXPLOITABILITY

This vulnerability could be exploited remotely.


# EXISTENCE OF EXPLOIT

No known public exploits specifically target this vulnerability.


# DIFFICULTY

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





### MITIGATION

Siemens recommends that customers contact Siemens Customer Support in order to obtain advice on a solution for the customer's specific environment. Siemens support can be contacted via email at support.automation@siemens.com(link sends e-mail) or via phone +49 (911) 895-7222.

For more information on this vulnerability and more detailed mitigation instructions, please see Siemens Security Advisory SSA-751155 at the following location:

http://www.siemens.com/cert/advisories