Remote denial of service in Mitsubishi Electric MELSEC-Q Series Ethernet Module
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2019-10977 |
| CWE-ID | CWE-400 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
MELSEC-Q QJ71E71-100 Hardware solutions / Routers & switches, VoIP, GSM, etc |
| Vendor | Mitsubishi Electric |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Resource exhaustion
EUVDB-ID: #VU18546
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-2019-10977
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 input validation within FTP server implementation. A remote attacker can send specially crafted TCP packets to the FTP service, force the device to enter an error mode and perform a denial of service (DoS) attack. Physical reset of the PLC is required to regain device functionality.
Install updates from vendor's website.
Vulnerable software versionsMELSEC-Q QJ71E71-100: 18072 - 20121
External linkshttp://ics-cert.us-cert.gov/advisories/ICSA-19-141-02
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
