6.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
6.4 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
0.001 Low
EPSS
Percentile
26.2%
This updated advisory is a follow-up to the updated advisory titled ICSA-16-313-02 Siemens Industrial Products Local Privilege Escalation Vulnerability (Update H) that was published June 14, 2018, on the ICS webpage on us-cert.gov.
This vulnerability could allow local users to escalate their privileges if the affected products are not installed under the default path.
Siemens reports that the vulnerability affects the following products:
--------- Begin Update I Part 1 of 2 ---------
--------- End Update I Part 1 of 2 ---------
Unquoted service paths could allow local Microsoft Windows operating system users to escalate their privileges if the affected products are not installed under their default path (āC:\Program Files\*ā or the localized equivalent).
CVE-2016-7165 has been assigned to this vulnerability. A CVSS v3 base score of 6.4 has been calculated; the CVSS vector string is (AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H).
ā¢ **CRITICAL INFRASTRUCTURE SECTORS:**Chemical, Energy, Food and Agriculture, and Water and Wastewater Systems
ā¢ COUNTRIES/AREAS DEPLOYED: Worldwide
ā¢ **COMPANY HEADQUARTERS LOCATION:**Germany
WATERSURE and KIANDRA IT reported this vulnerability to Siemens.
If the affected products are installed under their default path (āC:\Program Files\*ā or the localized equivalent) and the default file system access permissions for drive C:\ were not modified, the security vulnerability is not exploitable.
However, if the affected products are not installed under their default path (āC:\Program Files\*ā or the localized equivalent), the security vulnerability is potentially exploitable.
Siemens has released updates for the following products and encourages users to apply the updates as soon as possible:
To obtain SIMATIC PCS 7 v8.2 SP1 contact your local support.
--------- Begin Update I Part 2 of 2 ---------
--------- End Update I Part 2 of 2 ---------
Siemens strongly recommends users protect network access to engineering workstations and project storage with appropriate mechanisms. Siemens also advises that users configure the operational environment according to the Siemens Operational Guidelines for Industrial Security.
For more information on this vulnerability and more detailed mitigation instructions, please see Siemens Security Advisory SSA-701708 at the following location:
<http://www.siemens.com/cert/advisories>
CISA recommends users take the following measures to protect themselves from social engineering attacks:
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on us-cert.gov. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on us-cert.gov in the Technical Information Paper, ICS-TIP-12-146-01BāTargeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.
No known public exploits specifically target this vulnerability. This vulnerability is not exploitable remotely. High skill level is needed to exploit.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-7165
www.siemens.com/cert/advisories
cwe.mitre.org/data/definitions/269.html
mes-simaticit.siemens.com/tss/html/hfc.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
support.industry.siemens.com/cs/de/en/view/109737984
support.industry.siemens.com/cs/ww/en/view/109483119
support.industry.siemens.com/cs/ww/en/view/109739719
support.industry.siemens.com/cs/ww/en/view/109740929
support.industry.siemens.com/cs/ww/en/view/109740929
support.industry.siemens.com/cs/ww/en/view/109740929
support.industry.siemens.com/cs/ww/en/view/109740929
support.industry.siemens.com/cs/ww/en/view/109741127
support.industry.siemens.com/cs/ww/en/view/109741519
support.industry.siemens.com/cs/ww/en/view/109741833
support.industry.siemens.com/cs/ww/en/view/109741996
support.industry.siemens.com/cs/ww/en/view/109742642
support.industry.siemens.com/cs/ww/en/view/109742642
support.industry.siemens.com/cs/ww/en/view/109743963
support.industry.siemens.com/cs/ww/en/view/109744041
support.industry.siemens.com/cs/ww/en/view/109745028
support.industry.siemens.com/cs/ww/en/view/109745155
support.industry.siemens.com/cs/ww/en/view/109745155
support.industry.siemens.com/cs/ww/en/view/109746038
support.industry.siemens.com/cs/ww/en/view/109746074
support.industry.siemens.com/cs/ww/en/view/109746075
support.industry.siemens.com/cs/ww/en/view/109746276
support.industry.siemens.com/cs/ww/en/view/109754280
support.industry.siemens.com/cs/ww/en/view/109765109
support.industry.siemens.com/cs/ww/en/view/19440762
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www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
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www.us-cert.gov/ics
www.us-cert.gov/ics
www.us-cert.gov/ics/recommended-practices
www.us-cert.gov/ics/tips/ICS-TIP-12-146-01B
www.us-cert.gov/ncas/tips/ST04-014
www.us-cert.gov/sites/default/files/publications/emailscams_0905.pdf
www.us-cert.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
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6.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
6.4 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
0.001 Low
EPSS
Percentile
26.2%