SCADA Vulnerabilities & Exposures (SVE)

CRITIFENCE® SCADA Vulnerabilities and Exposures Database (SVE)

[SVE-487110630] Siemens devices using the PROFINET Discovery and Configuration Protocol

Date Type Platform Author EDB-ID CVE-ID OSVDB-ID Download App SIS Signature
2017-05-09OtherSiemensDuan JinTong, Ma ShaoShuai, and Cheng Lei from NSFOCUS Security Team reported this vulnerability directly to Siemens. N/ACVE-2017-6865 N/AN/AN/A

Source

						
							
								
#
# Siemens devices using the PROFINET Discovery and Configuration Protocol
#


### VULNERABLE VENDOR
Siemens


### VULNERABLE PRODUCT
Devices using the PROFINET Discovery and Configuration Protocol (DCP)



### RESEARCHER
Duan JinTong, Ma ShaoShuai, and Cheng Lei from NSFOCUS Security Team reported this vulnerability directly to Siemens.



### AFFECTED PRODUCTS

Siemens reports that the vulnerability affects the following products using the PROFINET DCP:

SIMATIC WinCC (TIA Portal)
V13: All versions prior to V13 SP2, and
V14: All versions prior to V14 SP1
SIMATIC STEP 7 (TIA Portal)
V13: All versions prior to V13 SP2, and
V14: All versions prior to V14 SP1
SIMATIC STEP 7 V5.X: All versions,
STEP 7 - Micro/WIN SMART: All versions,
SMART PC Access V2.0,
SIMATIC Automation Tool: All versions,
SIMATIC WinCC: All versions,
SIMATIC PCS 7: All versions,
SIMATIC NET PC-Software: All versions,
Primary Setup Tool (PST): All versions,
Security Configuration Tool (SCT): All versions,
SINEMA Server: All versions,
SINAUT ST7CC: All versions,
SIMATIC WinAC RTX 2010 SP2: All versions,
SIMATIC WinAC RTX F 2010 SP2: All versions,
SINUMERIK 808D Programming Tool: All versions, and
SIMATIC WinCC flexible 2008: All versions.



### IMPACT

An attacker may be able to cause a denial-of-service condition requiring a manual restart by exploiting this vulnerability.



### VULNERABILITY OVERVIEW

IMPROPER INPUT VALIDATION CWE-20
Specially crafted PROFINET DCP broadcast packets sent to the affected products on a local Ethernet segment (Layer 2) could cause a denial-of-service condition in some services.
The services may require manual restart to recover.
CVE-2017-6865 has been assigned to this vulnerability.
A CVSS v3 base score of 6.5 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)





### BACKGROUND

Critical Infrastructure Sectors: Critical Manufacturing, Food and Agriculture, Chemical, Energy, Water and Wastewater Systems
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Germany




### MITIGATION

Siemens provides updates that fix the vulnerability for the following affected products and recommends users update to the new fixed version:

SIMATIC WinCC (TIA Portal) V13: Update to V13 SP2
https://support.industry.siemens.com/cs/ww/en/view/109746073


SIMATIC WinCC (TIA Portal) V14: Update to V14 SP1
https://support.industry.siemens.com/cs/ww/en/view/109745460


SIMATIC STEP 7 (TIA Portal) V13: Update to V13 SP2
https://support.industry.siemens.com/cs/ww/en/view/109745155


SIMATIC STEP 7 (TIA Portal) V14: Update to V14 SP1
https://support.industry.siemens.com/cs/ww/en/view/109745984


The affected component is shared among all of the affected products on the host. Installing one fixed version will mitigate the vulnerability for all Siemens applications installed on that host.

Siemens is preparing updates for the remaining affected products and recommends the following mitigations in the meantime:

Apply cell protection concept
https://support.industry.siemens.com/cs/ww/en/view/60119725


Use VPN for protecting network communication between cells
Apply Defense-in-Depth
As a general security measure, Siemens strongly recommends protecting industrial control systems networks with appropriate mechanisms. Siemens advises configuring the environment according to Siemens operational guidelines in order to run the devices in a protected IT environment.

https://www.siemens.com/cert/operational-guidelines-industrial-security


For more information on this vulnerability and more detailed mitigation instructions, please see Siemens Security Advisory SSA-275839 at the following location:

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