Rockwell Automation 440G TLS-Z

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1. EXECUTIVE SUMMARY

• CVSS v4 7.3
• ATTENTION: High attack complexity
• Vendor: Rockwell Automation
• Equipment: 440G TLS-Z
• Vulnerability: Improper Neutralization of Special Elements in Output Used by a Downstream Component

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to take over the device.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

Rockwell Automation reports the following products are affected by a vulnerability because they use STMicroelectronics STM32L4 devices:

• 440G TLS-Z: Version v6.001

3.2 VULNERABILITY OVERVIEW

3.2.1 IMPROPER NEUTRALIIZATION OF SPECIAL ELEMENTS IN OUTPUT USED BY A DOWNSTREAM COMPONENT CWE-74

A local code execution vulnerability exists in the STMicroelectronics STM32L4 devices due to having incorrect access controls. The affected product utilizes the STMicroelectronics STM32L4 device and because of the vulnerability, a threat actor could reverse protections that control access to the JTAG interface. If exploited, a threat actor can take over the device.

CVE-2020-27212 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.0 has been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2020-27212. A base score of 7.3 has been calculated; the CVSS vector string is (CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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