Westermo xRD Products Authentication Bypass (CVE-2018-10933)

critical Tenable OT Security Plugin ID 502173

Synopsis

The remote OT asset is affected by a vulnerability.

Description

libssh versions 0.6 and above have an authentication bypass vulnerability in the server code. By presenting the server an SSH2_MSG_USERAUTH_SUCCESS message in place of the SSH2_MSG_USERAUTH_REQUEST message which the server would expect to initiate authentication, the attacker could successfully authenticate without any credentials.

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

Solution

Refer to the vendor advisory.

Plugin Details

Severity: Critical

ID: 502173

Version: 1.1

Type: remote

Family: Tenable.ot

Published: 4/3/2024

Updated: 4/3/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2018-10933

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 8.2

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:westermo:mrd-355_firmware, cpe:/o:westermo:mrd-455_firmware, cpe:/o:westermo:mrd-305_firmware, cpe:/o:westermo:mrd-405_firmware, cpe:/o:westermo:mrd-315_firmware, cpe:/o:westermo:brd-355_firmware, cpe:/o:westermo:mrd-350_firmware, cpe:/o:westermo:mrd-310_firmware, cpe:/o:westermo:mrd-330_firmware

Required KB Items: Tenable.ot/Westermo

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/25/2017

Vulnerability Publication Date: 8/25/2017

Reference Information

CVE: CVE-2018-10933

Detections

Analytics