Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU22634
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-13555
CWE-ID:
CWE-400 - Resource exhaustion
Exploit availability: No
DescriptionThe 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionsQ03UDVCPU: 21081
Q04UDVCPU: 21081
Q06UDVCPU: 21081
Q13UDVCPU: 21081
Q26UDVCPU: 21081
Q04UDPVCPU: 21081
Q06UDPVCPU: 21081
Q13UDPVCPU: 21081
Q26UDPVCPU: 21081
MELSEC-Q Q03UDECPU: 21081
Q04UDEHCPU: 21081
Q06UDEHCPU: 21081
Q10UDEHCPU: 21081
Q13UDEHCPU: 21081
Q20UDEHCPU: 21081
Q26UDEHCPU: 21081
Q50UDEHCPU: 21081
Q100UDEHCPU: 21081
MELSEC-L L02CPU: 21101
MELSEC-L L06CPU: 21101
MELSEC-L L26CPU: 21101
MELSEC-L L26CPU-BT: 21101
MELSEC-L L02CPU-P: 21101
MELSEC-L L06CPU-P: 21101
MELSEC-L L26CPU-P: 21101
MELSEC-L L26CPU-PBT: 21101
MELSEC-L L02CPU-CM: 21101
MELSEC-L L06CPU-CM: 21101
MELSEC-L L26CPU-CM: 21101
MELSEC-L L26CPU-BT-CM: 21101
External linkshttp://ics-cert.us-cert.gov/advisories/icsa-19-311-01
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.