NN-2023:10-01
DoS on IDS parsing of malformed asset fields in Guardian/CMC >= 22.6.0 before 22.6.3 and 23.1.0
Last update: 2024-05-20
| Advisory ID | NN-2023:10-01 |
|---|---|
| Topic | DoS on IDS parsing of malformed asset fields in Guardian/CMC >= 22.6.0 before 22.6.3 and 23.1.0 |
| CWE Impact | CWE-20: Improper Input Validation |
| Issue date | 2023-09-18 |
| Affects | Guardian, CMC >= 22.6.0, < v22.6.3 or < v23.1.0 |
| CVE Name(s) | CVE-2023-32649 |
| 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:N 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 and CMC, due to improper input validation in certain fields used in the Asset Intelligence functionality of our IDS, allows an unauthenticated attacker to crash the IDS module by sending specially crafted malformed network packets.
Impact
During the (limited) time window before the IDS module is automatically restarted, network traffic may not be analyzed.
Affected Products
Guardian, CMC >= 22.6.0, < v22.6.3 or < v23.1.0
Workarounds and Mitigations
N/A. It is recommended to monitor the IDS log to check for abnormal stops and restarts.
Solutions
Upgrade to v22.6.3, v23.1.0 or later.
Modification History
2023-09-18: Initial revision
2023-11-13: Migrated to CSAF VEX format
2023-11-16: CSAF vers improvements
2024-05-20: Added CVSS v4.0 scoring where applicable
Related Links
Acknowledgements
We thank the following parties for their efforts:
- Nozomi Networks for finding this issue during an internal investigation
Contact
Nozomi Networks Product Security team can be reached at prodsec@nozominetworks.com.More contact details on the PSIRT page.