Westermo WeOS Cryptographic Issues (CVE-2015-7923)

critical Tenable OT Security Plugin ID 502176

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Westermo WeOS before 4.19.0 uses the same SSL private key across different customers' installations, which makes it easier for man-in- the-middle attackers to defeat cryptographic protection mechanisms by leveraging knowledge of a key.

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: 502176

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: 6.5

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 6.9

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

CVSS Score Source: CVE-2015-7923

CVSS v3

Risk Factor: Critical

Base Score: 9

Temporal Score: 7.8

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

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

Vulnerability Information

CPE: cpe:/o:westermo:weos

Required KB Items: Tenable.ot/Westermo

Exploit Ease: No known exploits are available

Patch Publication Date: 1/30/2016

Vulnerability Publication Date: 1/30/2016

Reference Information

CVE: CVE-2015-7923

Detections

Analytics