CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C
EPSS
Percentile
55.6%
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).
Successful exploitation of these vulnerabilities could allow an authenticated remote attacker to execute code on the affected system.
Siemens reports these vulnerabilities affect the following IP video management software:
3.2.1 DESERIALIZATION OF UNTRUSTED DATA CWE-502
The Event Server component of affected Siemens Siveillance Video applications deserializes data without sufficient validations. This could allow an authenticated remote attacker to execute code on the affected system.
CVE-2023-30898 has been assigned to this vulnerability. A CVSS v3 base score of 9.9 has been calculated. The CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).
3.2.2 DESERIALIZATION OF UNTRUSTED DATA CWE-502
The Management Server component of affected Siemens Siveillance Video applications deserializes data without sufficient validations. This could allow an authenticated remote attacker to execute code on the affected system.
CVE-2023-30899 has been assigned to this vulnerability. A CVSS v3 base score of 9.9 has been calculated. The CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).
**CRITICAL INFRASTRUCTURE SECTORS:**Communications, Commercial Facilities
COUNTRIES/AREAS DEPLOYED: Worldwide
**COMPANY HEADQUARTERS LOCATION:**Germany
Milestone PSIRT reported these vulnerabilities to Siemens.
Siemens has released updates for several affected products and recommends updating to the latest versions. The provided cumulative hotfix releases include the fixes for both Event Server (ES) and Management Server (MS). Ensure to apply the fixes on all relevant deployed servers:
As a general security measure Siemens strongly recommends protecting network access to affected products with appropriate mechanisms. It is advised to follow recommended security practices to run the devices in a protected IT environment.
For additional information regarding this vulnerability, see the related Milestone security advisory.
For further inquiries on security vulnerabilities in Siemens products, users should contact the Siemens ProductCERT.
For more information, see the associated Siemens security advisory SSA-789345 in HTML and CSAF.
CISA recommends users take defensive measures to minimize the risk of exploitation of 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-12-146-01B–Targeted 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.
No known public exploits specifically target these vulnerabilities. These vulnerabilities are exploitable remotely. These vulnerabilities have low attack complexity.
cert-portal.siemens.com/productcert/csaf/ssa-789345.json
cert-portal.siemens.com/productcert/html/ssa-789345.html
cisa.gov/ics
cisa.gov/ics
cisasurvey.gov1.qualtrics.com/jfe/form/SV_9n4TtB8uttUPaM6?product=https://www.cisa.gov/news-events/ics-advisories/icsa-23-131-03
cwe.mitre.org/data/definitions/502.html
cwe.mitre.org/data/definitions/502.html
new.siemens.com/global/en/products/services/cert.html#SecurityPublications
nvd.nist.gov/vuln/detail/CVE-2023-30898
nvd.nist.gov/vuln/detail/CVE-2023-30899
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
support.industry.siemens.com/cs/ww/en/view/109781128/
support.industry.siemens.com/cs/ww/en/view/109791980/
support.industry.siemens.com/cs/ww/en/view/109801904/
support.industry.siemens.com/cs/ww/en/view/109805466/
support.industry.siemens.com/cs/ww/en/view/109810201/
support.industry.siemens.com/cs/ww/en/view/109812608/
support.industry.siemens.com/cs/ww/en/view/109815353/
support.industry.siemens.com/cs/ww/en/view/109820659/
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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
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