title: Omron FINS memory protection susceptible to bruteforce
description: The Omron FINS protocol has an authenticated feature to prevent access to memory regions. Authentication is susceptible to bruteforce attack, which may allow an adversary to gain access to protected memory. This access can allow overwrite of values including programmed logic.
problem types: CWE-307 Improper Restriction of Excessive Authentication Attempts
affected:
{
defaultStatus: unaffected
product: CJ-series and CS-series CPU modules
vendor: Omron
versions:
lessThan: 1.5, status: affected, version: CJ2H 0.0, versionType: custom
lessThan: 2.1, status: affected, version: CJ2M 0.0, versionType: custom
lessThan: 4.1, status: affected, version: CJ1G 0.0, versionType: custom
lessThan: 4.1, status: affected, version: CS1H 0.0, versionType: custom
lessThan: 4.1, status: affected, version: CS1G 0.0, versionType: custom
lessThan: 1.4, status: affected, version: CS1D-H 0.0, versionType: custom
lessThan: 1.3, status: affected, version: CP1E-E 0.0, versionType: custom
lessThan: 1.3, status: affected, version: CP1E-N 0.0, versionType: custom
lessThan: 1.4, status: affected, version: CS1D-P 0.0, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 8.6
baseSeverity: HIGH
confidentialityImpact: NONE
integrityImpact: HIGH
privilegesRequired: NONE
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
version: 3.1
]
format: CVSS
scenarios: GENERAL