description: A vulnerability exists in the HCI IEC 60870-5-104 that affects the RTU500 series product versions listed below.
Incomplete or wrong received APDU frame layout may
cause blocking on link layer. Error reason was an endless blocking when reading incoming frames on link layer
with wrong length information of APDU or delayed reception
of data octets.
Only communication link of affected HCI IEC 60870-5-104
is blocked. If attack sequence stops the communication to
the previously attacked link gets normal again.
affected:
{
defaultStatus: unaffected
product: RTU500 series
vendor: Hitachi Energy
versions:
status: affected, version: RTU500 series CMU Firmware version 12.0.1 – 12.0.14
status: affected, version: RTU500 series CMU Firmware version 12.2.1 – 12.2.11
status: affected, version: RTU500 series CMU Firmware version 12.4.1 – 12.4.11
status: affected, version: RTU500 series CMU Firmware version 12.6.1 – 12.6.9
status: affected, version: RTU500 series CMU Firmware version 12.7.1 – 12.7.6
status: affected, version: RTU500 series CMU Firmware version 13.2.1 – 13.2.6
status: affected, version: RTU500 series CMU Firmware version 13.4.1 – 13.4.3
}
metrics:
cvssV3_1: [
attackComplexity: HIGH
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 5.9
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
version: 3.1
]
format: CVSS
scenarios: GENERAL