6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
0.001 Low
EPSS
Percentile
34.5%
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 Siemensβ ProductCERT Security Advisories (CERT Services | Services | Siemens Global).
This updated advisory is a follow-up to the original advisory titled ICSA-22-314-02 Siemens Web Server Login Page of Industrial Controllers published November 10, 2022 on the ICS webpage on cisa.gov/ICS.
Successful exploitation of this vulnerability could allow an attacker to track the activity of other users.
The web server login pages of the following Siemens devices are affected:
--------- Begin Update A Part 1 of 5 ---------
--------- End Update A Part 1 of 5 ---------
--------- Begin Update A Part 2 of 5 ---------
--------- End Update A Part 2 of 5 ---------
--------- Begin Update A Part 3 of 5 ---------
--------- End Update A Part 3 of 5 ---------
4.2.1 CROSS-SITE REQUEST FORGERY (CSRF) CWE-352
The login endpoint /FormLogin in affected web services does not apply proper origin checking. This could allow authenticated remote attackers to track the activities of other users via a login cross-site request forgery attack.
CVE-2022-30694 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been calculated. the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N)
K Narahari from Sectrio reported these vulnerabilities to Siemens.
Siemens has released updates for the following products and recommends updating to the latest versions:
--------- Begin Update A Part 4 of 5 ---------
--------- End Update A Part 4 of 5 ---------
--------- Begin Update A Part 5 of 5 ---------
--------- End Update A Part 5 of 5 ---------
Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk:
As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate devices in a protected IT environment, Siemens recommends configuring the environment according to Siemensβ Operational Guidelines for Industrial Security and following recommendations in the product manuals.
Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage.
For further inquiries on security vulnerabilities in Siemens products and solutions, users should contact Siemens ProductCERT.
For more information see Siemens Security Advisory SSA-478960 in HTML or CSAF.
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability these vulnerabilities. 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 at cisa.gov/ics. Several CISA products detailing cyber defense best 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 at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01BβTargeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
cert-portal.siemens.com/productcert/csaf/ssa-478960.json
cert-portal.siemens.com/productcert/html/ssa-478960.html
cisa.gov/ics
cisa.gov/ics
cwe.mitre.org/data/definitions/352.html
new.siemens.com/global/en/products/services/cert.html#SecurityPublications
nvd.nist.gov/vuln/detail/CVE-2022-30694
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
support.industry.siemens.com/cs/ww/en/view/109478459/
support.industry.siemens.com/cs/ww/en/view/109773914/
support.industry.siemens.com/cs/ww/en/view/109809300/
support.industry.siemens.com/cs/ww/en/view/40360647/
support.industry.siemens.com/cs/ww/en/view/40360647/
support.industry.siemens.com/cs/ww/en/view/40362228/
support.industry.siemens.com/cs/ww/en/view/40362228/
support.industry.siemens.com/cs/ww/en/view/40944925/
support.industry.siemens.com/cs/ww/en/view/40944925/
support.industry.siemens.com/cs/ww/en/view/40945128/
support.industry.siemens.com/cs/ww/en/view/40945128/
support.industry.siemens.com/cs/ww/en/view/47353723/
support.industry.siemens.com/cs/ww/en/view/47353723/
support.industry.siemens.com/cs/ww/en/view/47353723/
support.industry.siemens.com/cs/ww/en/view/47354354/
support.industry.siemens.com/cs/ww/en/view/47354354/
support.industry.siemens.com/cs/ww/en/view/47354354/
support.industry.siemens.com/cs/ww/en/view/47354502/
support.industry.siemens.com/cs/ww/en/view/47354578/
support.industry.siemens.com/cs/ww/en/view/51466769/
support.industry.siemens.com/cs/ww/en/view/51466769/
support.industry.siemens.com/cs/ww/en/view/62612377/
support.industry.siemens.com/cs/ww/en/view/62612377/
support.industry.siemens.com/cs/ww/en/view/85049260/
support.industry.siemens.com/cs/ww/en/view/85059804/
twitter.com/CISAgov
twitter.com/intent/tweet?text=Siemens%20Web%20Server%20Login%20Page%20of%20Industrial%20Controllers%20%28Update%20A%29%20+https://www.cisa.gov/news-events/ics-advisories/icsa-22-314-02
us-cert.cisa.gov/ics/Recommended-Practices
us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01
www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B
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-22-314-02&title=Siemens%20Web%20Server%20Login%20Page%20of%20Industrial%20Controllers%20%28Update%20A%29%20
www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
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-22-314-02
www.oig.dhs.gov/
www.siemens.com/cert/advisories
www.siemens.com/cert/operational-guidelines-industrial-security
www.siemens.com/industrialsecurity
www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/ics-advisories/icsa-22-314-02
www.usa.gov/
www.whitehouse.gov/
www.youtube.com/@cisagov
mailto:?subject=Siemens%20Web%20Server%20Login%20Page%20of%20Industrial%20Controllers%20%28Update%20A%29%20&body=www.cisa.gov/news-events/ics-advisories/icsa-22-314-02