Siemens Mendix SAML: Authentication bypass
Siemens has identified an authentication bypass vulnerability in its Mendix SAML module, which could allow unauthenticated attackers to circumvent authentication controls.
Triage facts
Revision 1- Applicability
- Mendix SAML (Mendix 10 compatible) (< V4.2.4), Mendix SAML (Mendix 11 compatible) (< V4.2.4) +1
- Evidence
- Unknown
- Severity
- High
- Action
- Elevated
- Sources
- 2 public sources
- Freshness
- Revision 1Oct 26, 15:52 UTC
- Source quality
- A1Likely
Siemens has released security advisory SSA-137528 regarding an authentication bypass vulnerability affecting specific versions of the Mendix SAML module. The vulnerability impacts modules compatible with Mendix 9, 10, and 11. Siemens advises users and administrators to update to the patched versions to mitigate the potential for unauthorized access.
Impact
Successful exploitation could allow an unauthenticated attacker to bypass authentication mechanisms, potentially leading to unauthorized access to affected applications.
Recommendation
- Upgrade Mendix SAML (Mendix 10 compatible) to V4.2.4 or later.
- Upgrade Mendix SAML (Mendix 11 compatible) to V4.2.4 or later.
- Upgrade Mendix SAML (Mendix 9 compatible) to V3.6.29 or later.
- Review the Siemens security advisory SSA-137528 for additional configuration guidance.
Immediate actions
Patch affected Mendix SAML modules to the versions specified in the recommendation section
Threat Hunt
Identify unauthorized access patterns or unexpected login bypass events in Mendix application logs
Data: Application authentication logs, SAML assertion logs
Mitigations
Apply security patches to Mendix SAML modules
Authentication bypass vulnerability