CVE-2020-26993 : Security Advisory and Response

A vulnerability has been identified in JT2Go and Teamcenter Visualization, affecting all versions below V13.1.0. The issue stems from a lack of proper validation of user-supplied data when parsing CGM files, leading to a stack-based buffer overflow that could be exploited by an attacker to execute arbitrary code.

Understanding CVE-2020-26993

This CVE pertains to a stack-based buffer overflow vulnerability in Siemens' JT2Go and Teamcenter Visualization software.

What is CVE-2020-26993?

The vulnerability in JT2Go and Teamcenter Visualization allows attackers to execute code in the context of the current process due to improper validation of user-supplied data when handling CGM files.

The Impact of CVE-2020-26993

Exploitation of this vulnerability could result in a stack-based buffer overflow, potentially leading to arbitrary code execution by malicious actors.

Technical Details of CVE-2020-26993

Siemens' JT2Go and Teamcenter Visualization software are affected by a stack-based buffer overflow vulnerability.

Vulnerability Description

The vulnerability arises from inadequate validation of user-supplied data during the parsing of CGM files, which could trigger a stack-based buffer overflow.

Affected Systems and Versions

Product: JT2Go
Vendor: Siemens
Affected Versions: All versions < V13.1.0
Product: Teamcenter Visualization
Vendor: Siemens
Affected Versions: All versions < V13.1.0

Exploitation Mechanism

Attackers can exploit this vulnerability by providing malicious input in CGM files, causing a buffer overflow and potentially executing arbitrary code.

Mitigation and Prevention

Steps to address and prevent the CVE-2020-26993 vulnerability.

Immediate Steps to Take

Apply the vendor-provided patch or update to version V13.1.0 or higher to mitigate the vulnerability.
Implement proper input validation mechanisms to prevent buffer overflow attacks.

Long-Term Security Practices

Regularly update software and apply security patches to address known vulnerabilities.
Conduct security assessments and code reviews to identify and remediate potential security weaknesses.

Patching and Updates

Siemens has released a patch to address the vulnerability. Ensure all affected systems are updated to version V13.1.0 or above to prevent exploitation of the stack-based buffer overflow.