CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
61.7%
As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens’ ProductCERT Security Advisories (CERT Services | Services | Siemens Global).
This updated advisory is a follow-up to the advisory update titled ICSA-19-283-02 Siemens PROFINET Devices (Update K) published on October 14, 2021, to the ICS webpage on cisa.gov/ics.
Successful exploitation of this vulnerability could cause a denial-of-service condition.
Siemens reports the vulnerability affects the following PROFINET devices:
Siemens reports the vulnerability affects the following PROFINET devices:
--------- Begin Update L Part 1 of 3 ---------
--------- End Update L Part 1 of 3 ---------
An unauthenticated attacker sending a large amount of specially crafted UDP packets may trigger a denial-of-service condition.
CVE-2019-10936 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
Siemens reported this vulnerability to CISA.
Siemens recommends users update the following PROFINET devices:
SINAMICS GL150 v4.7 Control Unit: Upgrade to v4.8 SP2 HF9 (this update can be obtained from a Siemens representative or via Siemens customer service)
--------- Begin Update L Part 2 of 3 ---------
--------- End Update L Part 2 of 3 ---------
Siemens has identified the following specific workarounds and mitigations users can apply to reduce the risk:
As a general security measure, Siemens strongly recommends users protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends users configure the environment according to the Siemens operational guidelines for industrial security, and follow the recommendations in the product manuals.
Additional information on industrial security by Siemens can be found at:
<https://www.siemens.com/industrialsecurity>
--------- Begin Update L Part 3 of 3 ---------
For more information, see the associated Siemens security advisory SSA-473245 in HTML or CSAF formats.
--------- End Update L Part 3 of 3 ---------
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
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.cisa.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.cisa.gov in the Technical Information Paper, ICS-TIP-12-146-01B–Targeted 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.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-10936
cert-portal.siemens.com/operational-guidelines-industrial-security.pdf
cert-portal.siemens.com/productcert/html/ssa-473245.html
cert-portal.siemens.com/productcert/html/ssa-473245.json
cisasurvey.gov1.qualtrics.com/jfe/form/SV_9n4TtB8uttUPaM6?product=https://www.cisa.gov/news-events/ics-advisories/icsa-19-283-02
cwe.mitre.org/data/definitions/400.html
new.siemens.com/global/en/products/services/cert.html#SecurityPublications
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
support.industry.siemens.com/cs/us/en/view/109476571
support.industry.siemens.com/cs/ww/en/ps/13752/dl
support.industry.siemens.com/cs/ww/en/view/109474550
support.industry.siemens.com/cs/ww/en/view/109740119
support.industry.siemens.com/cs/ww/en/view/109754281
support.industry.siemens.com/cs/ww/en/view/109754628
support.industry.siemens.com/cs/ww/en/view/109756820
support.industry.siemens.com/cs/ww/en/view/109756820
support.industry.siemens.com/cs/ww/en/view/109759122
support.industry.siemens.com/cs/ww/en/view/109760973
support.industry.siemens.com/cs/ww/en/view/109762626
support.industry.siemens.com/cs/ww/en/view/109762626
support.industry.siemens.com/cs/ww/en/view/109763483
support.industry.siemens.com/cs/ww/en/view/109763919
support.industry.siemens.com/cs/ww/en/view/109764666
support.industry.siemens.com/cs/ww/en/view/109764679/
support.industry.siemens.com/cs/ww/en/view/109764679/
support.industry.siemens.com/cs/ww/en/view/109764679/
support.industry.siemens.com/cs/ww/en/view/109768047
support.industry.siemens.com/cs/ww/en/view/109769419
support.industry.siemens.com/cs/ww/en/view/109769419
support.industry.siemens.com/cs/ww/en/view/109773826
support.industry.siemens.com/cs/ww/en/view/109781345
support.industry.siemens.com/cs/ww/en/view/27049282
support.industry.siemens.com/cs/ww/en/view/44029688
support.industry.siemens.com/cs/ww/en/view/85624387
support.industry.siemens.com/cs/ww/en/view/85624387
support.industry.siemens.com/cs/ww/en/view/93012181
twitter.com/CISAgov
twitter.com/intent/tweet?text=Siemens%20PROFINET%20Devices%20%28Update%20L%29+https://www.cisa.gov/news-events/ics-advisories/icsa-19-283-02
us-cert.cisa.gov/
us-cert.cisa.gov/ics
us-cert.cisa.gov/ics/alerts/ICS-ALERT-10-301-01
us-cert.cisa.gov/ics/recommended-practices
us-cert.cisa.gov/ics/tips/ICS-TIP-12-146-01B
us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
www.dhs.gov
www.dhs.gov/foia
www.dhs.gov/performance-financial-reports
www.facebook.com/CISA
www.facebook.com/sharer/sharer.php?u=https://www.cisa.gov/news-events/ics-advisories/icsa-19-283-02&title=Siemens%20PROFINET%20Devices%20%28Update%20L%29
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
www.instagram.com/cisagov
www.linkedin.com/company/cybersecurity-and-infrastructure-security-agency
www.linkedin.com/sharing/share-offsite/?url=https://www.cisa.gov/news-events/ics-advisories/icsa-19-283-02
www.oig.dhs.gov/
www.siemens.com/industrialsecurity
www.usa.gov/
www.whitehouse.gov/
www.youtube.com/@cisagov
mailto:?subject=Siemens%20PROFINET%20Devices%20%28Update%20L%29&body=www.cisa.gov/news-events/ics-advisories/icsa-19-283-02
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
61.7%