SSA-615116

Siemens Security Advisory by Siemens ProductCERT

SSA-615116: Multiple Vulnerabilities in Apogee PXC and Talon TC Devices

Publication Date:	2025-02-11
Last Update:	2025-02-11
Current Version:	V1.0
CVSS v3.1 Base Score:	7.5
CVSS v4.0 Base Score:	8.7

SUMMARY

Apogee PXC and Talon TC contain a vulnerability that could allow an attacker to perform a denial of service using a out-of-bounds read forcing the device to enter a cold state and a vulnerability that would allow an attacker to decrypt the passwords of the device.

Siemens recommends countermeasures for products where fixes are not, or not yet available.

AFFECTED PRODUCTS AND SOLUTION

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Affected Product and Versions	Remediation
APOGEE PXC Series (BACnet) All versions affected by all CVEs CVE-2024-54089 CVE-2024-54090	Currently no fix is available See recommendations from section Workarounds and Mitigations
APOGEE PXC Series (P2 Ethernet) All versions affected by all CVEs CVE-2024-54089 CVE-2024-54090	Currently no fix is available See recommendations from section Workarounds and Mitigations
TALON TC Series (BACnet) All versions affected by all CVEs CVE-2024-54089 CVE-2024-54090	Currently no fix is available See recommendations from section Workarounds and Mitigations

WORKAROUNDS AND MITIGATIONS

Siemens has identified the following specific workarounds and mitigations that customers can apply to reduce the risk:

CVE-2024-54089: Use strong, hard to guess passwords
CVE-2024-54090:

Disable telnet (Telnet is disabled by default).

Ensure all three default passwords are changed even if not in use.

Please follow the General Security Recommendations.

GENERAL SECURITY RECOMMENDATIONS

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

VULNERABILITY DESCRIPTION

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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-2024-54089

Affected devices contain a weak encryption mechanism based on a hard-coded key. This could allow an attacker to guess or decrypt the password from the cyphertext.

CVSS v3.1 Base Score	7.5
CVSS v3.1 Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0 Base Score	8.7
CVSS v4.0 Vector	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CWE	CWE-326: Inadequate Encryption Strength

Vulnerability CVE-2024-54090

Affected devices contain an out-of-bounds read in the memory dump function. This could allow an attacker with Medium (MED) or higher privileges to cause the device to enter an insecure cold start state.

CVSS v3.1 Base Score	5.9
CVSS v3.1 Vector	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0 Base Score	6.0
CVSS v4.0 Vector	CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CWE	CWE-125: Out-of-bounds Read

ACKNOWLEDGMENTS

Siemens thanks the following party for its efforts:

Johnathan Law from PwC for coordinated disclosure

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 (2025-02-11):

Publication Date

The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/terms-of-use.