ICSA-23-075-05: Siemens Mendix SAML Module
CISA advisory · released 2023-03-14
Source record Collected from CISA's CSAF advisory feed
- Distribution label in the document: TLP:WHITE
- Revision 4, 2025-05-06 (final)
CISA's summary
Summary: The Mendix SAML module insufficiently verifies the SAML assertions. This could allow unauthenticated remote attackers to bypass authentication and get access to the application. Mendix has provided fix releases for the Mendix SAML module and recommends to update to the latest version. Note: For compatibility reasons, fixes for several versions of the Mendix SAML module were introduced in two release steps: - The first fix versions address CVE-2023-25957. It removes the vulnerability, except when the recommended, default configuration option 'Use Encryption' is disabled. - The second fix versions address CVE-2023-29129, which removes the issue for the non default configuration as well.
Products, as the advisory lists them
| Vendor | Product | Version |
|---|---|---|
| Siemens | Mendix SAML (Mendix 7 compatible) | >=V1.17.3<V1.18.0 |
| Siemens | Mendix SAML (Mendix 7 compatible) | >=V1.16.4<V1.17.3 |
| Siemens | Mendix SAML (Mendix 8 compatible) | >=V2.3.0<V2.4.0 |
| Siemens | Mendix SAML (Mendix 8 compatible) | >=V2.2.0<V2.3.0 |
| Siemens | Mendix SAML (Mendix 9 latest compatible, New Track) | >=V3.3.1<V3.6.1 |
| Siemens | Mendix SAML (Mendix 9 latest compatible, New Track) | >=V3.1.9<V3.3.1 |
| Siemens | Mendix SAML (Mendix 9 latest compatible, Upgrade Track) | >=V3.3.0<V3.6.0 |
| Siemens | Mendix SAML (Mendix 9 latest compatible, Upgrade Track) | >=V3.1.8<V3.3.0 |
| Siemens | Mendix SAML (Mendix 9.12/9.18 compatible, New Track) | >=V3.3.1<V3.3.15 |
| Siemens | Mendix SAML (Mendix 9.12/9.18 compatible, Upgrade Track) | >=V3.3.0<V3.3.14 |
| Siemens | Mendix SAML (Mendix 9.6 compatible, New Track) | >=V3.1.9<V3.2.7 |
| Siemens | Mendix SAML (Mendix 9.6 compatible, Upgrade Track) | >=V3.1.8<V3.2.6 |
DeSpy has not checked any unit, hardware revision or firmware.
Vulnerabilities in this advisory
- CVE-2023-25957 — CVE-2023-25957 · CWE-303
The affected versions of the module insufficiently verify the SAML assertions. This could allow unauthenticated remote attackers to bypass authentication and get access to the application. For compatibility reasons, fix versions still contain this issue, but only when the recommended, default configuration option `'Use Encryption'` is disabled.
- CVE-2023-29129 — CVE-2023-29129 · CWE-303
The affected versions of the module insufficiently verify the SAML assertions. This could allow unauthenticated remote attackers to bypass authentication and get access to the application. This CVE entry describes the incomplete fix for CVE-2023-25957 in a specific non default configuration.
Acknowledgments, as the advisory lists them
- Siemens ProductCERT: reporting these vulnerabilities to CISA.
The advisory's legal notice
Siemens Security Advisories are subject to the terms and conditions contained in Siemens' underlying license terms or other applicable agreements previously agreed to with Siemens (hereinafter "License Terms"). To the extent applicable to information, software or documentation made available in or through a Siemens Security Advisory, the Terms of Use of Siemens' Global Website (https://www.siemens.com/terms_of_use, hereinafter "Terms of Use"), in particular Sections 8-10 of the Terms of Use, shall apply additionally. In case of conflicts, the License Terms shall prevail over the Terms of Use.
Sources
DeSpy's copy of this version is dated 2026-09-28.
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