PT-2021-14062 · Mitsubishi · Got2000 Series Gt27+5

Published 2021-05-19 · Updated 2021-06-10 · CVE-2021-20589

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: GOT2000 series GT27 model communication driver versions 01.19.000 through 01.38.000 GOT2000 series GT25 model communication driver versions 01.19.000 through 01.38.000 GOT2000 series GT23 model communication driver versions 01.19.000 through 01.38.000 GOT2000 series GT21 model communication driver versions 01.21.000 through 01.39.000 GOT SIMPLE series GS21 model communication driver versions 01.21.000 through 01.39.000 GT SoftGOT2000 versions 1.170C through 1.250L Tension Controller LE7-40GU-L Screen package data for MODBUS/TCP V1.00

Description: The issue allows a remote unauthenticated attacker to stop the communication function of the products via specially crafted packets. This is due to a buffer access with incorrect length value vulnerability in the communication drivers of the affected products.

Recommendations: For GOT2000 series GT27 model communication driver versions 01.19.000 through 01.38.000, update to a version outside of this range to resolve the issue. For GOT2000 series GT25 model communication driver versions 01.19.000 through 01.38.000, update to a version outside of this range to resolve the issue. For GOT2000 series GT23 model communication driver versions 01.19.000 through 01.38.000, update to a version outside of this range to resolve the issue. For GOT2000 series GT21 model communication driver versions 01.21.000 through 01.39.000, update to a version outside of this range to resolve the issue. For GOT SIMPLE series GS21 model communication driver versions 01.21.000 through 01.39.000, update to a version outside of this range to resolve the issue. For GT SoftGOT2000 versions 1.170C through 1.250L, update to a version outside of this range to resolve the issue. For Tension Controller LE7-40GU-L Screen package data for MODBUS/TCP V1.00, consider disabling the MODBUS/TCP communication function until a patch is available.

Fix

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

CVE-2021-20589

Affected Products

Got Simple Series Gs21

Got2000 Series Gt21

Got2000 Series Gt23

Got2000 Series Gt25

Got2000 Series Gt27

Gt Softgot2000

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2021-20589 · Security Note
• https://osv.dev/vulnerability/CVE-2021-20589 · Vendor Advisory
• https://t.me/cvenotify/14631 · Telegram Post
• https://mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-002_en.pdf · Note
• https://jvn.jp/vu/JVNVU99895108/index.html · Note