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

Published Sep 19, 2023 CVSS 4.0 · 8.2 High EPSS < 1% KEV · Not listed
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

Vendor Solution

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


Vendor Workaround

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

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2023-36892 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.
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-1286
Weaknesses

Sources

Status
PUBLISHED
Assigner
Nozomi
Published
Updated
Feb 27, 2025, 8:49 PM
Reserved
Jun 12, 2023, 9:20 AM
Status
Modified
Published
Sep 19, 2023, 11:16 AM
Modified
Jun 17, 2026, 5:59 AM