The built-in WEB server for MOXA NPort IAW5000A-I/O firmware version 2.1 or lower allows SSH/Telnet sessions, which may be vulnerable to brute force attacks to bypass authentication.
Description: CWE-307: Improper Restriction of Excessive Authentication Attempts
Metrics
Version
Base score
Base severity
Vector
3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Version:3.1
Base score:9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Metrics Other Info
Impacts
CAPEC ID
Description
Solutions
Moxa has released an updated firmware version (https://www.moxa.com/en/support/product-support/software-and-documentation/search?psid=50535) for the NPort IAW5000A-I/O Series and recommends (https://www.moxa.com/en/support/support/security-advisory/nport-iaw5000a-io-serial-device-servers-vulnerabilities) users install this update on all affected systems.
Configurations
Workarounds
Exploits
Credits
Evgeniy Druzhinin and Ilya Karpov of Rostelecom-Solar reported these vulnerabilities to CISA