Vulnerability identifier: #VU32954

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-14523

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
CW Configurator
Client/Desktop applications / Software for system administration
Mitsubishi Electric FR Configurator2
Client/Desktop applications / Software for system administration
GX Works2
Client/Desktop applications / Software for system administration
GX Works3
Client/Desktop applications / Software for system administration
MELSOFT iQ AppPortal
Client/Desktop applications / Software for system administration
MELSOFT Navigator
Client/Desktop applications / Software for system administration
MI Configurator
Client/Desktop applications / Software for system administration
MR Configurator2
Client/Desktop applications / Software for system administration
MT Works2
Client/Desktop applications / Software for system administration
RT ToolBox3
Client/Desktop applications / Software for system administration
MELSEC iQ-R series
Hardware solutions / Routers & switches, VoIP, GSM, etc
MX Component
Universal components / Libraries / Libraries used by multiple products

Vendor: Mitsubishi Electric

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system, leading to arbitrary code execution.

Mitigation
Install update from vendor's website.

Vulnerable software versions

CW Configurator: 1.010L

Mitsubishi Electric FR Configurator2: 1.22Y

GX Works2: 1.595V

GX Works3: 1.063R

MELSEC iQ-R series: All versions

MELSOFT iQ AppPortal: All versions

MELSOFT Navigator: All versions

MI Configurator: All versions

MR Configurator2: All versions

MT Works2: 1.156N

MX Component: All versions

RT ToolBox3: 1.70Y

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External links
http://ics-cert.us-cert.gov/advisories/icsa-20-212-03

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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.