Siemens SCALANCE S Improper Neutralization of Input During Web Page Generation (CVE-2018-16555)

medium Tenable OT Security Plugin ID 501013

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A vulnerability has been identified in SCALANCE S602 (All versions < V4.0.1.1), SCALANCE S612 (All versions < V4.0.1.1), SCALANCE S623 (All versions < V4.0.1.1), SCALANCE S627-2M (All versions < V4.0.1.1). The integrated web server could allow Cross-Site Scripting (XSS) attacks if unsuspecting users are tricked into accessing a malicious link.
User interaction is required for a successful exploitation. The user must be logged into the web interface in order for the exploitation to succeed. At the stage of publishing this security advisory no public exploitation is known.

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 has recommended that users update to Version 4.0.1.1, which can be found here:

https://support.industry.siemens.com/cs/document/109477325/-delivery-release-and-download-of-firmware- update-v4-0-1-1-for-scalance-s?dti=0&lc=en-WW

Siemens has identified the following specific workarounds and mitigations that users can apply to reduce the risk: Only access links from trusted sources in the browser you use to access the SCALANCE S administration website.

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-242982 on their website:

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

Plugin Details

Severity: Medium

ID: 501013

Version: 1.6

Type: remote

Family: Tenable.ot

Published: 4/11/2023

Updated: 4/11/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 3.0

CVSS v2

Risk Factor: Low

Base Score: 3.5

Temporal Score: 2.6

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

CVSS Score Source: CVE-2018-16555

CVSS v3

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4.7

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

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

Vulnerability Information

CPE: cpe:/o:siemens:scalance_s602_firmware, cpe:/o:siemens:scalance_s612_firmware, cpe:/o:siemens:scalance_s623_firmware, cpe:/o:siemens:scalance_s627-2m_firmware

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 12/13/2018

Vulnerability Publication Date: 12/13/2018

Reference Information

CVE: CVE-2018-16555

CWE: 79

Detections

Analytics