SSA-955858

Siemens Security Advisory by Siemens ProductCERT

SSA-955858: Multiple Vulnerabilities in LOGO! 8 BM Devices

Publication Date:	2022-10-11
Last Update:	2024-10-08
Current Version:	V1.3
CVSS v3.1 Base Score:	9.8

SUMMARY

LOGO! 8 BM (incl. SIPLUS variants) contains multiple web-related vulnerabilities. These could allow an attacker to execute code remotely, put the device into a denial of service state or retrieve parts of the memory.

The vulnerabilities are related to the hardware of the product. Siemens has released new hardware versions with the LOGO! V8.4 BM and the SIPLUS LOGO! V8.4 BM product families for all affected devices in which several of those vulnerabilities are fixed. See the chapter "Additional Information" below for more details.

For more information please also refer to the related product support article: https://support.industry.siemens.com/cs/ww/en/view/109826554/.

AFFECTED PRODUCTS AND SOLUTION

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Affected Product and Versions	Remediation
LOGO! V8.3 BM	Currently no fix is planned See recommendations from section Workarounds and Mitigations
LOGO! 12/24RCE (6ED1052-1MD08-0BA1) All versions affected by all CVEs CVE-2022-36361 CVE-2022-36362 CVE-2022-36363	Currently no fix is planned See recommendations from section Workarounds and Mitigations
LOGO! 12/24RCEo (6ED1052-2MD08-0BA1) All versions affected by all CVEs CVE-2022-36361 CVE-2022-36362 CVE-2022-36363	Currently no fix is planned See recommendations from section Workarounds and Mitigations
LOGO! 230RCE (6ED1052-1FB08-0BA1) All versions affected by all CVEs CVE-2022-36361 CVE-2022-36362 CVE-2022-36363	Currently no fix is planned See recommendations from section Workarounds and Mitigations
LOGO! 230RCEo (6ED1052-2FB08-0BA1) All versions affected by all CVEs CVE-2022-36361 CVE-2022-36362 CVE-2022-36363	Currently no fix is planned See recommendations from section Workarounds and Mitigations
LOGO! 24CE (6ED1052-1CC08-0BA1) All versions affected by all CVEs CVE-2022-36361 CVE-2022-36362 CVE-2022-36363	Currently no fix is planned See recommendations from section Workarounds and Mitigations
LOGO! 24CEo (6ED1052-2CC08-0BA1) All versions affected by all CVEs CVE-2022-36361 CVE-2022-36362 CVE-2022-36363	Currently no fix is planned See recommendations from section Workarounds and Mitigations
LOGO! 24RCE (6ED1052-1HB08-0BA1) All versions affected by all CVEs CVE-2022-36361 CVE-2022-36362 CVE-2022-36363	Currently no fix is planned See recommendations from section Workarounds and Mitigations
LOGO! 24RCEo (6ED1052-2HB08-0BA1) All versions affected by all CVEs CVE-2022-36361 CVE-2022-36362 CVE-2022-36363	Currently no fix is planned See recommendations from section Workarounds and Mitigations
LOGO! V8.4 BM	Currently no fix is planned See recommendations from section Workarounds and Mitigations
LOGO! 12/24RCE (6ED1052-1MD08-0BA2) All versions affected by CVE-2022-36362	Currently no fix is planned See recommendations from section Workarounds and Mitigations
LOGO! 12/24RCEo (6ED1052-2MD08-0BA2) All versions affected by CVE-2022-36362	Currently no fix is planned See recommendations from section Workarounds and Mitigations
LOGO! 230RCE (6ED1052-1FB08-0BA2) All versions affected by CVE-2022-36362	Currently no fix is planned See recommendations from section Workarounds and Mitigations
LOGO! 230RCEo (6ED1052-2FB08-0BA2) All versions affected by CVE-2022-36362	Currently no fix is planned See recommendations from section Workarounds and Mitigations
LOGO! 24CE (6ED1052-1CC08-0BA2) All versions affected by CVE-2022-36362	Currently no fix is planned See recommendations from section Workarounds and Mitigations
LOGO! 24CEo (6ED1052-2CC08-0BA2) All versions affected by CVE-2022-36362	Currently no fix is planned See recommendations from section Workarounds and Mitigations
LOGO! 24RCE (6ED1052-1HB08-0BA2) All versions affected by CVE-2022-36362	Currently no fix is planned See recommendations from section Workarounds and Mitigations
LOGO! 24RCEo (6ED1052-2HB08-0BA2) All versions affected by CVE-2022-36362	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIPLUS LOGO! V8.3 BM	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIPLUS LOGO! 12/24RCE (6AG1052-1MD08-7BA1) All versions affected by all CVEs CVE-2022-36361 CVE-2022-36362 CVE-2022-36363	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIPLUS LOGO! 12/24RCEo (6AG1052-2MD08-7BA1) All versions affected by all CVEs CVE-2022-36361 CVE-2022-36362 CVE-2022-36363	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIPLUS LOGO! 230RCE (6AG1052-1FB08-7BA1) All versions affected by all CVEs CVE-2022-36361 CVE-2022-36362 CVE-2022-36363	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIPLUS LOGO! 230RCEo (6AG1052-2FB08-7BA1) All versions affected by all CVEs CVE-2022-36361 CVE-2022-36362 CVE-2022-36363	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIPLUS LOGO! 24CE (6AG1052-1CC08-7BA1) All versions affected by all CVEs CVE-2022-36361 CVE-2022-36362 CVE-2022-36363	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIPLUS LOGO! 24CEo (6AG1052-2CC08-7BA1) All versions affected by all CVEs CVE-2022-36361 CVE-2022-36362 CVE-2022-36363	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIPLUS LOGO! 24RCE (6AG1052-1HB08-7BA1) All versions affected by all CVEs CVE-2022-36361 CVE-2022-36362 CVE-2022-36363	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIPLUS LOGO! 24RCEo (6AG1052-2HB08-7BA1) All versions affected by all CVEs CVE-2022-36361 CVE-2022-36362 CVE-2022-36363	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIPLUS LOGO! V8.4 BM	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIPLUS LOGO! 12/24RCE (6AG1052-1MD08-7BA2) All versions affected by CVE-2022-36362	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIPLUS LOGO! 12/24RCEo (6AG1052-2MD08-7BA2) All versions affected by CVE-2022-36362	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIPLUS LOGO! 230RCE (6AG1052-1FB08-7BA2) All versions affected by CVE-2022-36362	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIPLUS LOGO! 230RCEo (6AG1052-2FB08-7BA2) All versions affected by CVE-2022-36362	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIPLUS LOGO! 24CE (6AG1052-1CC08-7BA2) All versions affected by CVE-2022-36362	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIPLUS LOGO! 24CEo (6AG1052-2CC08-7BA2) All versions affected by CVE-2022-36362	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIPLUS LOGO! 24RCE (6AG1052-1HB08-7BA2) All versions affected by CVE-2022-36362	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIPLUS LOGO! 24RCEo (6AG1052-2HB08-7BA2) All versions affected by CVE-2022-36362	Currently no fix is planned 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:

Restrict access to port 135/tcp to trusted IP addresses only
Only for versions < V8.3: Restrict access to port 10005/tcp to trusted IP addresses only
Only for versions >= V8.3: Restrict access to port 8443/tcp to trusted IP addresses only

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

PRODUCT DESCRIPTION

Siemens LOGO! BM (Base Module) devices are used for basic small-scale automation tasks.

SIPLUS extreme products are designed for reliable operation under extreme conditions and are based on SIMATIC, LOGO!, SITOP, SINAMICS, SIMOTION, SCALANCE or other devices. SIPLUS devices use the same firmware as the product they are based on.

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-2022-36361

Affected devices do not properly validate the structure of TCP packets in several methods. This could allow an attacker to cause buffer overflows, get control over the instruction counter and run custom code.

CVSS v3.1 Base Score	9.8
CVSS v3.1 Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:T/RC:C
CWE	CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Vulnerability CVE-2022-36362

Affected devices do not conduct certain validations when interacting with them. This could allow an unauthenticated remote attacker to manipulate the devices IP address, which means the device would not be reachable and could only be recovered by power cycling the device.

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:N/I:N/A:H/E:P/RL:T/RC:C
CWE	CWE-20: Improper Input Validation

Vulnerability CVE-2022-36363

Affected devices do not properly validate an offset value which can be defined in TCP packets when calling a method. This could allow an attacker to retrieve parts of the content of the memory.

CVSS v3.1 Base Score	5.3
CVSS v3.1 Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:T/RC:C
CWE	CWE-1285: Improper Validation of Specified Index, Position, or Offset in Input

ACKNOWLEDGMENTS

Siemens thanks the following party for its efforts:

Cyber Research Group from Raytheon UK for reporting the vulnerabilities

ADDITIONAL INFORMATION

Siemens has released new hardware versions with the LOGO! V8.4 BM and the SIPLUS LOGO! V8.4 BM product families for all affected devices. Those new hardware versions fixes the vulnerabilities CVE-2022-36361 and CVE-2022-36363:

LOGO! 12/24RCE (6ED1052-1MD08-0BA2)
LOGO! 12/24RCEo (6ED1052-2MD08-0BA2)
LOGO! 230RCE (6ED1052-1FB08-0BA2)
LOGO! 230RCEo (6ED1052-2FB08-0BA2)
LOGO! 24CE (6ED1052-1CC08-0BA2)
LOGO! 24CEo (6ED1052-2CC08-0BA2)
LOGO! 24RCE (6ED1052-1HB08-0BA2)
LOGO! 24RCEo (6ED1052-2HB08-0BA2)
SIPLUS LOGO! 12/24RCE (6AG1052-1MD08-7BA2)
SIPLUS LOGO! 12/24RCEo (6AG1052-2MD08-7BA2)
SIPLUS LOGO! 230RCE (6AG1052-1FB08-7BA2)
SIPLUS LOGO! 230RCEo (6AG1052-2FB08-7BA2)
SIPLUS LOGO! 24CE (6AG1052-1CC08-7BA2)
SIPLUS LOGO! 24CEo (6AG1052-2CC08-7BA2)
SIPLUS LOGO! 24RCE (6AG1052-1HB08-7BA2)
SIPLUS LOGO! 24RCEo (6AG1052-2HB08-7BA2)

For more information please also refer to the related product support article: https://support.industry.siemens.com/cs/ww/en/view/109826554/.

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 (2022-10-11):	Publication Date
V1.1 (2023-12-12):	Added information about additional new LOGO! V8.4 BM hardware versions
V1.2 (2024-09-10):	Added information about additional new SIPLUS LOGO! hardware versions: SIPLUS LOGO! 24CE and SIPLUS LOGO! 230RCE
V1.3 (2024-10-08):	Added information about additional new SIPLUS LOGO! hardware versions

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