PT-2020-3698 · Moxa · Moxa Nport Iaw5000A-I/O

Evgeniy Druzhinin + 1 · Published 2020-05-26 · Updated 2020-12-23 · CVE-2020-25196

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions MOXA NPort IAW5000A-I/O firmware versions 2.1 and lower

Description The issue is related to the implementation of SSH/Telnet protocols in the MOXA NPort IAW5000A-I/O Series web server software, which lacks sufficient restrictions on authentication attempts. This may allow a remote attacker to bypass security restrictions through brute force attacks.

Recommendations For MOXA NPort IAW5000A-I/O firmware versions 2.1 and lower, consider restricting or disabling SSH/Telnet sessions as a temporary workaround to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Restriction of Excessive Authentication Attempts

Weakness Enumeration

CWE-307

Related Identifiers

BDU:2020-04053

CVE-2020-25196

Affected Products

Moxa Nport Iaw5000A-I/O

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2020-25196 · Security Note
• https://bdu.fstec.ru/vul/2020-04053 · Security Note
• https://osv.dev/vulnerability/CVE-2020-25196 · Vendor Advisory
• https://us-cert.cisa.gov/ics/advisories/icsa-20-287-01 · Note
• https://moxa.com/en/support/support/security-advisory/nport-iaw5000a-io-serial-device-servers-vulnerabilities · Note
• https://t.me/cibsecurity/21235 · Telegram Post
• https://cisa.gov/uscert/ics/advisories/icsa-20-287-01 · Note