CVE-2021-44000 : What You Need to Know

A vulnerability has been identified in JT2Go, Solid Edge SE2021, Solid Edge SE2022, Teamcenter Visualization V13.1, Teamcenter Visualization V13.2, and Teamcenter Visualization V13.3. The plmxmlAdapterSE70.dll contains a critical heap-based buffer overflow vulnerability that could allow an attacker to execute arbitrary code.

Understanding CVE-2021-44000

This CVE involves a critical heap-based buffer overflow vulnerability that affects various Siemens products.

What is CVE-2021-44000?

CVE-2021-44000 is a vulnerability found in Siemens products, specifically JT2Go, Solid Edge SE2021, Solid Edge SE2022, Teamcenter Visualization V13.1, Teamcenter Visualization V13.2, and Teamcenter Visualization V13.3. The vulnerability arises from the plmxmlAdapterSE70.dll component, enabling an out-of-bounds write past a fixed-length heap-based buffer when processing specially crafted PAR files.

The Impact of CVE-2021-44000

The vulnerability could allow an adversary to execute malicious code within the context of the affected process. This could result in unauthorized access, data theft, system compromise, and potential disruption of critical operations.

Technical Details of CVE-2021-44000

This section discusses the specific technical details of this CVE.

Vulnerability Description

The plmxmlAdapterSE70.dll component in the affected Siemens products exhibits a critical heap-based buffer overflow issue, triggered by malformed PAR files.

Affected Systems and Versions

The following Siemens products and versions are affected:

JT2Go: All versions less than V13.2.0.7
Solid Edge SE2021: All versions less than SE2021MP9
Solid Edge SE2022: All versions less than SE2022MP1
Teamcenter Visualization V13.1: All versions less than V13.1.0.9
Teamcenter Visualization V13.2: All versions less than V13.2.0.7
Teamcenter Visualization V13.3: All versions less than V13.3.0.1

Exploitation Mechanism

The vulnerability is exploited by crafting PAR files in a specific way that triggers the buffer overflow, leading to the execution of arbitrary code.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-44000, users and organizations should take the following steps:

Immediate Steps to Take

Apply the recommended patches provided by Siemens for the affected products.
Monitor and restrict network access to vulnerable systems.
Educate users about the risks associated with opening untrusted files.

Long-Term Security Practices

Implement network segmentation to contain potential intrusions.
Regularly update and patch software to prevent known vulnerabilities.
Conduct security training for employees to enhance awareness and response to potential threats.
Implement threat detection mechanisms to identify and mitigate suspicious activities.

Patching and Updates

Ensure that all affected Siemens products are updated to the latest patched versions to prevent exploitation of the vulnerability.