CVE-2021-33738 : Security Advisory and Response

A vulnerability has been identified in JT2Go and Teamcenter Visualization where the plmxmlAdapterSE70.dll library lacks proper validation of user-supplied data, potentially leading to an out-of-bounds read attack. This vulnerability could be exploited by an attacker to leak sensitive information.

Understanding CVE-2021-33738

This section will cover the essential details of the CVE-2021-33738 vulnerability.

What is CVE-2021-33738?

CVE-2021-33738 is a security vulnerability found in JT2Go and Teamcenter Visualization software versions prior to V13.2.0.2. The issue lies in the plmxmlAdapterSE70.dll library, which fails to adequately validate user input when parsing PAR files.

The Impact of CVE-2021-33738

Exploitation of this vulnerability could allow an attacker to perform an out-of-bounds read attack beyond the allocated buffer. By doing so, the attacker may gain access to sensitive information within the current process context.

Technical Details of CVE-2021-33738

This section delves into the technical aspects of the CVE-2021-33738 vulnerability.

Vulnerability Description

The vulnerability arises from the lack of proper input validation in the plmxmlAdapterSE70.dll library when processing PAR files, enabling an out-of-bounds read capability.

Affected Systems and Versions

JT2Go and Teamcenter Visualization versions lower than V13.2.0.2 are impacted by this vulnerability.

Exploitation Mechanism

An attacker could exploit this vulnerability by providing malicious input data to the affected applications, leading to an out-of-bounds read beyond the allocated buffer.

Mitigation and Prevention

In this section, we will discuss the mitigation strategies and preventive measures against CVE-2021-33738.

Immediate Steps to Take

Users are advised to update their JT2Go and Teamcenter Visualization software to version V13.2.0.2 or above to mitigate this vulnerability. Additionally, it is crucial to apply security patches released by Siemens.

Long-Term Security Practices

Implement secure coding practices, including input validation mechanisms, to prevent similar vulnerabilities in the future. Regular security assessments and audits can help detect and address such issues proactively.

Patching and Updates

Stay informed about security updates and patches provided by Siemens for JT2Go and Teamcenter Visualization. Timely installation of patches is essential to protect systems from potential attacks.