Resource exhaustion in Mitsubishi Electric products - CVE-2019-13555

Vulnerability identifier: #VU22634

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-2019-13555

CWE-ID: CWE-400

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper resource management. A remote attacker can trigger resource exhaustion and cause the FTP service to enter a denial-of-service condition dependent on the timing at which a remote attacker connects to the FTP server on the affected CPU modules.

Q26UDPVCPU
Q50UDEHCPU
Q26UDEHCPU
Q100UDEHCPU
Q20UDEHCPU
Q13UDEHCPU
Q10UDEHCPU
Q06UDEHCPU
Q04UDEHCPU
Q03UDVCPU
Q04UDVCPU
Q06UDVCPU
Q13UDVCPU
Q26UDVCPU
Q04UDPVCPU
Q06UDPVCPU
Q13UDPVCPU
MELSEC-L L02CPU
MELSEC-L L06CPU
MELSEC-L L26CPU
MELSEC-L L26CPU-BT
MELSEC-Q Q03UDECPU
MELSEC-L L02CPU-P
MELSEC-L L06CPU-CM
MELSEC-L L26CPU-BT-CM
MELSEC-L L26CPU-CM
MELSEC-L L06CPU-P
MELSEC-L L02CPU-CM
MELSEC-L L26CPU-PBT
MELSEC-L L26CPU-P

Install updates from vendor's website.

• https://ics-cert.us-cert.gov/advisories/icsa-19-311-01

• Denial of service in Mitsubishi Electric MELSEC-Q Series and MELSEC-L CPU Modules