NN-2023:7-01
DoS via SAML configuration in Guardian/CMC before 22.6.2
Last update: 2024-09-19
| Advisory ID | NN-2023:7-01 |
|---|---|
| Topic | DoS via SAML configuration in Guardian/CMC before 22.6.2 |
| CWE Impact | CWE-1286: Improper Validation of Syntactic Correctness of Input |
| Issue date | 2023-08-09 |
| Affects | Guardian, CMC < v22.6.2 |
| CVE Name(s) | CVE-2023-23903 |
| CVSS Details | CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H |
| CVSS Score | 6.9 (CVSS v4.0) 4.9 (CVSS v3.1) |
| CVE Risk Level | Medium (CVSS v4.0) Medium (CVSS v3.1) |
| Risk Level for Nozomi customers | Medium |
Summary
An authenticated administrator can upload a SAML configuration file with the wrong format, with the application not checking the correct file format. Every subsequent application request will return an error.
Impact
The whole application in rendered unusable until a console intervention.
Affected Products
Guardian, CMC < v22.6.2
Workarounds and Mitigations
Use internal firewall features to limit access to the web management interface.
Solutions
Upgrade to v22.6.2 or later.
Modification History
2023-08-09: Initial revision
2023-09-04: Minor updates to format and metadata to improve the CSAF implementation
2023-11-13: Migrated to CSAF VEX format
2023-11-16: CSAF vers improvements
2024-05-20: Added CVSS v4.0 scoring where applicable
2024-09-19: Revised CWE mapping
Related Links
Acknowledgements
We thank the following parties for their efforts:
- Stefano Libero of Nozomi Networks Product Security team for finding this issue during a scheduled internal VAPT testing session
Contact
Nozomi Networks Product Security team can be reached at prodsec@nozominetworks.com.More contact details on the PSIRT page.