As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals.
Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity
PRODUCT DESCRIPTION
SCALANCE W-700 products are wireless communication devices based on IEEE 802.11ax or 802.11n standard. They are used to connect all to sorts of WLAN devices (Access Points or Clients, depending on the operating mode) with a strong focus on industrial components, like Programmable Logic Controllers (PLCs) or Human Machine Interfaces (HMIs) and others.
This chapter describes all vulnerabilities (CVE-IDs) addressed in this security advisory.
Wherever applicable, it also documents the product-specific impact of the individual vulnerabilities.
Vulnerability CVE-2022-46144
Affected devices do not properly process CLI commands after a user forcefully quitted the SSH connection. This could allow an authenticated attacker to make the CLI via SSH or serial interface irresponsive.
CWE-664: Improper Control of a Resource Through its Lifetime
Vulnerability CVE-2023-44317
Affected products do not properly validate the content of uploaded X509 certificates which could allow an attacker with administrative privileges to execute arbitrary code on the device.
CWE-349: Acceptance of Extraneous Untrusted Data With Trusted Data
Vulnerability CVE-2023-44318
Affected devices use a hardcoded key to obfuscate the configuration backup that an administrator can export from the device. This could allow an authenticated attacker with administrative privileges or an attacker that obtains a configuration backup to extract configuration information from the exported file.
Affected devices use a weak checksum algorithm to protect the configuration backup that an administrator can export from the device. This could allow an authenticated attacker with administrative privileges or an attacker that tricks a legitimate administrator to upload a modified configuration file to change the configuration of an affected device.
Affected devices allow to change the password, but insufficiently check which password is to be changed. With this an authenticated attacker could, under certain conditions, be able to change the password of another, potential admin user allowing her to escalate her privileges.
CWE-567: Unsynchronized Access to Shared Data in a Multithreaded Context
ADDITIONAL INFORMATION
For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT:
https://www.siemens.com/cert/advisories
HISTORY DATA
V1.0 (2024-06-11):
Publication Date
V1.1 (2024-09-10):
Move CVE-2023-44373 to SSA-721642 as fixed in V2.4 and remove CVE-2023-49691 as products are not affected
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