CVE-2021-20589
Description
Buffer access with incorrect length value vulnerability in GOT2000 series GT27 model communication driver versions 01.19.000 through 01.38.000, GT25 model communication driver versions 01.19.000 through 01.38.000, GT23 model communication driver versions 01.19.000 through 01.38.000 and 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 and Tension Controller LE7-40GU-L Screen package data for MODBUS/TCP V1.00 allows a remote unauthenticated attacker to stop the communication function of the products via specially crafted packets.
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mitsubishi gt27_firmware | 01.19.000 ≤ v ≤ 01.38.000 | — |
| mitsubishi gt25_firmware | 01.19.000 ≤ v ≤ 01.38.000 | — |
| mitsubishi gt23_firmware | 01.19.000 ≤ v ≤ 01.38.000 | — |
| mitsubishi gt21_firmware | 01.21.000 ≤ v ≤ 01.39.000 | — |
| mitsubishi gs21_firmware | 01.21.000 ≤ v ≤ 01.39.000 | — |
| mitsubishi gt_softgot2000_firmware | 1.170c ≤ v ≤ 1.250l | — |
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