NN-2024:1-01
DoS on IDS parsing of malformed Radius packets in Guardian before 23.4.1
Last update: 2024-09-19
| Advisory ID | NN-2024:1-01 |
|---|---|
| Topic | DoS on IDS parsing of malformed Radius packets in Guardian before 23.4.1 |
| CWE Impact | CWE-1286: Improper Validation of Syntactic Correctness of Input |
| Issue date | 2024-04-10 |
| Affects | Guardian < v23.4.1 |
| CVE Name(s) | CVE-2024-0218 |
| CVSS Details | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| CVSS Score | 8.2 (CVSS v4.0) 7.5 (CVSS v3.1) |
| CVE Risk Level | High (CVSS v4.0) High (CVSS v3.1) |
| Risk Level for Nozomi customers | High |
Summary
A Denial of Service (Dos) vulnerability in Nozomi Networks Guardian, caused by improper input validation in certain fields used in the Radius parsing functionality of our IDS, allows an unauthenticated attacker sending specially crafted malformed network packets to cause the IDS module to stop updating nodes, links, and assets.
Impact
Network traffic may not be analyzed until the IDS module is restarted.
Affected Products
Guardian < v23.4.1
Workarounds and Mitigations
N/A
Solutions
Upgrade to v23.4.1 or later.
Modification History
2024-04-10: Initial revision
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:
- Nozomi Networks for discovering this issue during an internal investigation that followed a bug report from one of our customers.
Contact
Nozomi Networks Product Security team can be reached at prodsec@nozominetworks.com.More contact details on the PSIRT page.