CVE-2023-32649

DoS on IDS parsing of malformed asset fields in Guardian/CMC >= 22.6.0 before 22.6.3 and 23.1.0

Description

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. During the (limited) time window before the IDS module is automatically restarted, network traffic may not be analyzed.

Remediation

Solution:

  • Upgrade to v22.6.3, v23.1.0 or later.

Workaround:

  • N/A. It is recommended to monitor the IDS log to check for abnormal stops and restarts.

Categories

8.2
CVSS
Severity: High
CVSS 4.0 •
CVSS 3.1 •
EPSS 0.17%
Vendor Advisory nozominetworks.com
Affected: Nozomi Networks Guardian
Affected: Nozomi Networks CMC
Published at:
Updated at:

References

Link Tags
https://security.nozominetworks.com/NN-2023:10-01 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-32649?
CVE-2023-32649 has been scored as a high severity vulnerability.
How to fix CVE-2023-32649?
To fix CVE-2023-32649: Upgrade to v22.6.3, v23.1.0 or later.
Is CVE-2023-32649 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-32649 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-32649?
CVE-2023-32649 affects Nozomi Networks Guardian, Nozomi Networks CMC.
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