title: 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.
problem types: CWE-20 Improper Input Validation
affected:
{
defaultStatus: unaffected
product: Guardian
vendor: Nozomi Networks
versions:
lessThan: 22.6.3, status: affected, version: 22.6.0, versionType: semver
lessThan: 23.1.0, status: affected, version: 23.0.0, versionType: semver
}
{
defaultStatus: unaffected
product: CMC
vendor: Nozomi Networks
versions:
lessThan: 22.6.3, status: affected, version: 22.6.0, versionType: semver
lessThan: 23.1.0, status: affected, version: 23.0.0, versionType: semver
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 7.5
baseSeverity: HIGH
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
version: 3.1
]
format: CVSS
scenarios: GENERAL
solutions: Upgrade to v22.6.3, v23.1.0 or later.
workarounds: N/A. It is recommended to monitor the IDS log to check for abnormal stops and restarts.