PT-2021-14074 · Mitsubishi · Ezsocket+2

Published 2021-12-17 · Updated 2023-02-02 · CVE-2021-20606

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions: Mitsubishi Electric GX Works2 versions 1.606G and prior Mitsubishi Electric MELSOFT Navigator versions 2.84N and prior Mitsubishi Electric EZSocket versions 5.4 and prior

Description: The issue allows an attacker to cause a Denial of Service (DoS) condition in the software by getting a user to open a malicious project file specially crafted by the attacker.

Recommendations: For Mitsubishi Electric GX Works2 versions 1.606G and prior, update to a version later than 1.606G to resolve the issue. For Mitsubishi Electric MELSOFT Navigator versions 2.84N and prior, update to a version later than 2.84N to resolve the issue. For Mitsubishi Electric EZSocket versions 5.4 and prior, update to a version later than 5.4 to resolve the issue.

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2021-20606

Affected Products

Ezsocket

Gx Works2

Melsoft Navigator

References · 5

• https://osv.dev/vulnerability/CVE-2021-20606 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-20606 · Security Note
• https://mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-021_en.pdf · Vendor Advisory
• https://jvn.jp/vu/JVNVU93817405/index.html · Patch
• https://us-cert.cisa.gov/ics/advisories/icsa-21-350-05 · Note