Vulnerability identifier: #VU29221

Vulnerability risk: Medium

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:P/RL:U/RC:C]

CVE-ID: CVE-2020-14476

CWE-ID: CWE-319

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MELSEC iQ-R series
Hardware solutions / Routers & switches, VoIP, GSM, etc
MELSEC iQ-F series
Hardware solutions / Routers & switches, VoIP, GSM, etc
MELSEC Q series
Hardware solutions / Routers & switches, VoIP, GSM, etc
MELSEC L series
Hardware solutions / Routers & switches, VoIP, GSM, etc
MELSEC FX series
Hardware solutions / Firmware

Vendor: Mitsubishi Electric

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to software uses insecure communication channel to transmit sensitive information between the affected products and GX Works3/GX Works2. A remote attacker with ability to intercept network traffic can gain access to sensitive data, leading to unauthorized operation, and denial-of-service (DoS) attacks.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

MELSEC iQ-R series: All versions

MELSEC iQ-F series: All versions

MELSEC Q series: All versions

MELSEC L series: All versions

MELSEC FX series: All versions

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External links
http://ics-cert.us-cert.gov/advisories/icsa-20-175-01

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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. However, proof of concept for this vulnerability is available.