Integer overflow in Moxa products - CVE-2019-9098

Vulnerability identifier: #VU25662

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2019-9098

CWE-ID: CWE-190

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to cause a buffer overflow.

The vulnerability exists due to integer overflow. A remote attacker can trigger integer overflow that causes less memory to be allocated than expected, leading to a buffer overflow

Moxa MGate MB3180 Series
Moxa MGate MB3480 Series
Moxa MGate MB3660 Series
Moxa MGate MB3170 Series
Moxa MGate MB3280 Series
Moxa MGate MB3270 Series

Install updates from vendor's website.

Moxa MGate MB3180 Series - update to 2.1
Moxa MGate MB3480 Series - update to 3.1
Moxa MGate MB3660 Series - update to 2.3
Moxa MGate MB3170 Series - update to 4.1
Moxa MGate MB3280 Series - update to 4.0
Moxa MGate MB3270 Series - update to 4.1

• https://ics-cert.us-cert.gov/advisories/icsa-20-056-01
• https://www.moxa.com/en/support/support/security-advisory/mb3710-3180-3270-3280-3480-3660-vulnerabilities

• Multiple vulnerabilities in Moxa MB3xxx Series Protocol Gateways