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PLANET IGS-6325-16P4S Improper Validation of Integrity Check Value (CVE-2023-48795)

medium Tenable OT Security Plugin ID 506481

Synopsis

The remote OT asset is affected by a vulnerability.

Description

The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted (from the extension negotiation message), and a client and server may consequently end up with a connection for which some security features have been downgraded or disabled, aka a Terrapin attack. This occurs because the SSH Binary Packet Protocol (BPP), implemented by these extensions, mishandles the handshake phase and mishandles use of sequence numbers.

PLANET IGS-6325-16P4S firmware versions V2.2312b240628 and prior are affected.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

Upgrade IGS-6325-16P4S to firmware V2.2412b250930 or later.

See Also

https://www.planet.com.tw/en/support/security-advisory/9

Plugin Details

Severity: Medium

ID: 506481

File Name: tenable_ot_planet_CVE-2023-48795.nasl

Version: 1.1

Type: Remote

Family: Tenable.ot

Published: 10/27/2026

Updated: 10/27/2026

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.17

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Vulnerability Information

CPE: cpe:/o:planet:igs-6325-16p4s_firmware:2

Required KB Items: Tenable.ot/PLANET

Patch Publication Date: 11/12/2025

Vulnerability Publication Date: 12/18/2023

Reference Information

CVE: CVE-2023-48795

CWE: 354