SCADA Vulnerabilities & Exposures (SVE)

CRITIFENCE® SCADA Vulnerabilities and Exposures Database (SVE)

[SVE-661098174] Siemens SIPROTEC 4, SIPROTEC Compact, DIGSI 4, and EN100 Ethernet Module

Date Type Platform Author EDB-ID CVE-ID OSVDB-ID Download App SIS Signature
2018-03-08OtherSiemensIlya Karpov and Dmitry Sklyarov from Positive Technologies reported these vulnerabilities to Siemens.N/ACVE-2018-4840 CVE-2018-4839 N/AN/AN/A

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# Siemens SIPROTEC 4, SIPROTEC Compact, DIGSI 4, and EN100 Ethernet Module
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### VULNERABLE VENDOR
Siemens


### VULNERABLE PRODUCT
SIPROTEC 4, SIPROTEC Compact, DIGSI 4, and EN100 Ethernet module 


### RESEARCHER
Ilya Karpov and Dmitry Sklyarov from Positive Technologies reported these vulnerabilities to Siemens.


### AFFECTED PRODUCTS
Siemens reports that the vulnerabilities affect the following products:

DIGSI 4: All versions prior to V4.92,
EN100 Ethernet module IEC 61850 variant: All versions prior to V4.30,
EN100 Ethernet module PROFINET IO variant: All versions,
EN100 Ethernet module Modbus TCP variant: All versions,
EN100 Ethernet module DNP3 variant: All versions,
EN100 Ethernet module IEC 104 variant: All versions,
SIPROTEC 4 7SJ66: All versions prior to V4.30. Only affected by CVE-2018-4839,
SIPROTEC Compact 7SJ80: All versions prior to V4.77. Only affected by CVE-2018-4839,
SIPROTEC Compact 7SK80: All versions prior to V4.77. Only affected by CVE-2018-4839,
Other SIPROTEC Compact relays: All versions. Only affected by CVE-2018-4839, and
Other SIPROTEC 4 relays: All versions. Only affected by CVE-2018-4839


### IMPACT
Successful exploitation of these vulnerabilities could allow an attacker to upload a modified device configuration that could overwrite access authorization passwords, or allow an attacker to capture certain network traffic that could contain authorization passwords.


### VULNERABILITY OVERVIEW
MISSING AUTHENTICATION FOR CRITICAL FUNCTION CWE-306
Successful exploitation of this vulnerability could allow an attacker to upload a modified device configuration, allowing an overwrite of access authorization passwords.
CVE-2018-4840 has been assigned to this vulnerability.
A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)


INADEQUATE ENCRYPTION STRENGTH CWE-326
Successful exploitation of this vulnerability could allow an attacker with local access to the engineering system or in a privileged network position to capture certain network traffic, and possibly reconstruct access authorization passwords.
CVE-2018-4839 has been assigned to this vulnerability.
A CVSS v3 base score of 4.0 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N)





### BACKGROUND
Critical Infrastructure Sector: Energy
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Germany




### MITIGATION

Siemens has provided the following updates for mitigations:

DIGSI 4: Update to V4.92 which can be located here:

https://support.industry.siemens.com/cs/ww/en/view/109740980


EN100 Ethernet module IEC 61850 variant: Update to V4.30 which can be located here:

https://support.industry.siemens.com/cs/us/en/view/109745821


SIPROTEC 4 7SJ66: Update to V4.30 which can be located here:  https://support.industry.siemens.com/cs/us/en/ view/109743555


SIPROTEC Compact 7SJ80:Update to V4.77 which can be located here:

https://support.industry.siemens.com/cs/us/en/view/109742699


SIPROTEC Compact 7SK80: Update to V4.77 which can be located here:

https://support.industry.siemens.com/cs/us/en/view/109742712


For all other affected products, Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk. As a general security measure, Siemens strongly recommends protecting network access with appropriate mechanisms (e.g., firewalls, segmentation, VPN). It is advised that users configure the environment according to Siemens operational guidelines in order to run the devices in a protected IT environment.

Recommended security guidelines to Secure Substations and Defense in Depth can be found at:

https://www.siemens.com/gridsecurity


For further inquiries on vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT:

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


For more information on these vulnerabilities and associated software updates, please see Siemens security notification SSA-203306 on their website:

https://cert-portal.siemens.com/productcert/pdf/ssa-203306.pdf