ICSA-23-348-03: Siemens User Management Component (UMC)
CISA advisory · released 2023-12-12
Source record Collected from CISA's CSAF advisory feed
- Distribution label in the document: TLP:WHITE
- Revision 8, 2025-01-14 (final)
CISA's summary
Summary: Siemens User Management Component (UMC) before V2.11.2 is affected by multiple vulnerabilities where the most severe could lead to a restart of the UMC server. Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where fixes are not, or not yet available.
Products, as the advisory lists them
| Vendor | Product | Version |
|---|---|---|
| Siemens | Opcenter Execution Foundation | vers:all/<V2407 |
| Siemens | Opcenter Quality | vers:all/<V2312 |
| Siemens | SIMATIC PCS neo | vers:all/<V4.1 |
| Siemens | SINEC NMS | <V2.0_SP1 |
| Siemens | Totally Integrated Automation Portal (TIA Portal) V14 | vers:all/* |
| Siemens | Totally Integrated Automation Portal (TIA Portal) V15.1 | vers:all/* |
| Siemens | Totally Integrated Automation Portal (TIA Portal) V16 | vers:all/* |
| Siemens | Totally Integrated Automation Portal (TIA Portal) V17 | <V17_Update_8 |
| Siemens | Totally Integrated Automation Portal (TIA Portal) V18 | <V18_Update_3 |
DeSpy has not checked any unit, hardware revision or firmware.
Vulnerabilities in this advisory
- CVE-2023-46281 — CVE-2023-46281 · CWE-942
When accessing the UMC Web-UI from affected products, UMC uses an overly permissive CORS policy. This could allow an attacker to trick a legitimate user to trigger unwanted behavior.
- CVE-2023-46282 — CVE-2023-46282 · CWE-79
A reflected cross-site scripting (XSS) vulnerability exists in the web interface of the affected applications that could allow an attacker to inject arbitrary JavaScript code. The code could be potentially executed later by another (possibly privileged) user.
- CVE-2023-46283 — CVE-2023-46283 · CWE-120
The affected application contains an out of bounds write past the end of an allocated buffer when handling specific requests on port 4002/tcp. This could allow an attacker to crash the application. The corresponding service is auto-restarted after the crash.
- CVE-2023-46284 — CVE-2023-46284 · CWE-120
The affected application contains an out of bounds write past the end of an allocated buffer when handling specific requests on port 4002/tcp and 4004/tcp. This could allow an attacker to crash the application. The corresponding service is auto-restarted after the crash.
- CVE-2023-46285 — CVE-2023-46285 · CWE-20
The affected application contains an improper input validation vulnerability that could allow an attacker to bring the service into a Denial-of-Service state by sending a specifically crafted message to 4004/tcp. The corresponding service is auto-restarted after the crash is detected by a watchdog.
Acknowledgments, as the advisory lists them
- Siemens ProductCERT: reporting these vulnerabilities to CISA.
The advisory's legal notice
The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/terms-of-use.
Sources
DeSpy's copy of this version is dated 2026-09-28.
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