Siemens SCALANCE W1750D Cryptographic Issues (CVE-2017-13099)

medium Tenable OT Security Plugin ID 501025

Synopsis

The remote OT asset is affected by a vulnerability.

Description

wolfSSL prior to version 3.12.2 provides a weak Bleichenbacher oracle when any TLS cipher suite using RSA key exchange is negotiated. An attacker can recover the private key from a vulnerable wolfSSL application. This vulnerability is referred to as ROBOT.

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

Solution

The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at CISA.gov.

Siemens provides a firmware update (v8.3.0.1) and recommends users to update to the new version. This update can be found on their website at the following location:

https://support.industry.siemens.com/cs/us/en/view/109760581

To reduce the risk, Siemens recommends administrators restrict access to the web interface of the affected devices.

As a general security measure, Siemens strongly recommends protecting network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security (https://www.siemens.com/cert/operational-guidelines-industrial-security), and following the recommendations in the product manuals.

Additional information on Industrial Security by Siemens can be found at:

https://www.siemens.com/industrialsecurity

For more information on this vulnerability and associated software updates, please see Siemens security advisory SSA-464260 on their website:

https://www.siemens.com/cert/advisories

Plugin Details

Severity: Medium

ID: 501025

Version: 1.2

Type: remote

Family: Tenable.ot

Published: 4/11/2023

Updated: 7/24/2023

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS Score Source: CVE-2017-13099

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

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

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

Vulnerability Information

CPE: cpe:/o:siemens:scalance_w1750d_firmware

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 12/13/2017

Vulnerability Publication Date: 12/13/2017

Reference Information

CVE: CVE-2017-13099

CWE: 203

Detections

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