8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
0.001 Low
EPSS
Percentile
37.1%
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 this vulnerability could allow authenticated remote attackers to access restricted data or execute arbitrary database queries via an SQL injection attack.
The following software from Siemens is affected:
3.2.1 MISSING AUTHORIZATION CWE-862
In the affected application, the client query handler fails to check for proper permissions for specific read queries. This could allow authenticated remote attackers to access restricted data.
CVE-2023-27462 has been assigned to this vulnerability. A CVSS v3 base score of 3.1 has been assigned. The CVSS vector string is (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N).
3.2.2 IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN AN SQL COMMAND (‘SQL INJECTION’) CWE-89
In affected applications, the audit log form is vulnerable to SQL injection. This could allow authenticated remote attackers to execute arbitrary SQL queries on the server database.
CVE-2023-27463 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been assigned. The CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
Siemens reported these vulnerabilities to CISA. Cameron Whitehead from RISES Center at UCF reported the vulnerability CVE-2023-27463 to Siemens.
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 to devices with appropriate mechanisms. To operate devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for Industrial Security. Additional information on Industrial Security by Siemens can be found at the Siemens website.
For more information, see the associated Siemens security advisory SSA-320629 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.
cert-portal.siemens.com/productcert/csaf/ssa-320629.json
cert-portal.siemens.com/productcert/html/ssa-320629.html
cisa.gov/ics
cisa.gov/ics
cwe.mitre.org/data/definitions/862.html
cwe.mitre.org/data/definitions/89.html
new.siemens.com/global/en/products/services/cert.html#SecurityPublications
nvd.nist.gov/vuln/detail/CVE-2023-27462
nvd.nist.gov/vuln/detail/CVE-2023-27463
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
support.industry.siemens.com/cs/document/109813558/delivery-release-for-ruggedcom-crossbow-5-3?dti=0&lc=en-WW
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us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
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