title: SSH activation problem in the proprietary management protocol (port TCP 5558)
description: Missing Handler vulnerability in the proprietary management protocol (port TCP 5558) of Hitachi Energy FOX61x, XCM20 allows an attacker that exploits the vulnerability by activating SSH on port TCP 5558 to cause disruption to the NMS and NE communication. This issue affects: Hitachi Energy FOX61x versions prior to R15A. Hitachi Energy XCM20 versions prior to R15A.
problem types: CWE-431 Missing Handler
affected:
{
product: FOX61x
vendor: Hitachi Energy
versions:
lessThan: R15A, status: affected, version: R15A, versionType: custom
}
{
product: XCM20
vendor: Hitachi Energy
versions:
lessThan: R15A, status: affected, version: R15A, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 8.6
baseSeverity: HIGH
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: NONE
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
version: 3.1
]
solutions: Fixed in FOX61x R15A or XMC20 R15A
workarounds: Recommended security practices and firewall configurations help protecting systems from attacks that originate from outside the network. Such practices include that network management systems and FOX61x or XMC20 networks are typically physically protected from direct access by unauthorized personnel and have no direct connections to the Internet, as well as are separated from other networks by means of a firewall system that has a minimal number of ports exposed, and others that have to be evaluated case by case. Portable computers and removable storage media should be carefully scanned for viruses before they are connected to a control system.