Headline

CVE-2021-20699: Vulnerabilities in public displays | Sharp NEC Display Solutions

Sharp NEC Displays ((UN462A R1.300 and prior to it, UN462VA R1.300 and prior to it, UN492S R1.300 and prior to it, UN492VS R1.300 and prior to it, UN552A R1.300 and prior to it, UN552S R1.300 and prior to it, UN552VS R1.300 and prior to it, UN552 R1.300 and prior to it, UN552V R1.300 and prior to it, UX552S R1.300 and prior to it, UX552 R1.300 and prior to it, V864Q R2.000 and prior to it, C861Q R2.000 and prior to it, P754Q R2.000 and prior to it, V754Q R2.000 and prior to it, C751Q R2.000 and prior to it, V984Q R2.000 and prior to it, C981Q R2.000 and prior to it, P654Q R2.000 and prior to it, V654Q R2.000 and prior to it, C651Q R2.000 and prior to it, V554Q R2.000 and prior to it, P404 R3.200 and prior to it, P484 R3.200 and prior to it, P554 R3.200 and prior to it, V404 R3.200 and prior to it, V484 R3.200 and prior to it, V554 R3.200 and prior to it, V404-T R3.200 and prior to it, V484-T R3.200 and prior to it, V554-T R3.200 and prior to it, C501 R2.000 and prior to it, C551 R2.000 and prior to it, C431 R2.000 and prior to it) allows an attacker a buffer overflow and to execute remote code by sending long parameters that contains specific characters in http request.

3 years ago

CVE

Open in Source

#vulnerability #buffer_overflow #ssh

CVE Identifier: CVE-2021-20698, CVE-2021-20699

Description

The following Public Displays allows an attacker arbitrary command or program execution.

Products****Models

UN462A, UN462VA, UN492S, UN492VS, UN552A, UN552S, UN552VS, UN552, UN552V, UX552S, UX552

Firmware version

R1.300 and prior to it

Models

V864Q, C861Q, P754Q, V754Q, C751Q, V984Q, C981Q, P654Q, V654Q, C651Q, V554Q

Firmware version

R2.000 and prior to it

Models

P404, P484, P554, V404, V484, V554, V404-T, V484-T, V554-T

Firmware version

R3.201 and prior to it

Models

C501, C551, C431

Firmware version

R2.000 and prior to it

Workaround

Please refer the below URL to update the latest firmware.
https://www.sharp-nec-displays.com/dl/en/dp_soft/pd_fm_update/index.html

Alternative:
Apply following workaround to avoid the effects of this vulnerability.

Use the product only in a safe intranet protected by a firewall and do not connect the product to the Internet.

The above workaround prevent illegal access to the product. Therefore, it does not require to update the firmware.
If it is difficult to take the above workaround due to a network configuration and etc., please update the firmware.

Reference