CVE-2023-37576 Explained : Impact and Mitigation

This article provides detailed information about CVE-2023-37576, a use-after-free vulnerability in GTKWave 3.3.115 that could lead to arbitrary code execution when exploited through a specially crafted .vcd file.

Understanding CVE-2023-37576

CVE-2023-37576 is a use-after-free vulnerability discovered in the VCD get_vartoken realloc functionality of GTKWave 3.3.115. Exploiting this flaw could result in arbitrary code execution on the victim's system by tricking them into opening a malicious .vcd file.

What is CVE-2023-37576?

The vulnerability in GTKWave 3.3.115 allows an attacker to execute arbitrary code by crafting a specially designed .vcd file. This can trigger a use-after-free condition within the application, leading to potentially severe consequences.

The Impact of CVE-2023-37576

The impact of CVE-2023-37576 is rated as HIGH, with a CVSS Base Score of 7.8. This vulnerability poses a significant risk as it can compromise the confidentiality, integrity, and availability of the affected system.

Technical Details of CVE-2023-37576

CVE-2023-37576 is classified under CWE-416: Use After Free. The attack vector is local with low complexity, and no privileges are required. However, user interaction is necessary to exploit this vulnerability.

Vulnerability Description

The vulnerability arises due to multiple use-after-free flaws in the VCD get_vartoken realloc functionality of GTKWave 3.3.115. It can be exploited by an attacker by tricking the victim into opening a malicious .vcd file.

Affected Systems and Versions

GTKWave version 3.3.115 is affected by this vulnerability. Users with this version of the software are at risk of exploitation and should take immediate action.

Exploitation Mechanism

To exploit CVE-2023-37576, an attacker needs to craft a malicious .vcd file and trick the victim into opening it using the GTKWave software. Once opened, the attacker can execute arbitrary code.

Mitigation and Prevention

It is crucial for users to take immediate steps to secure their systems against CVE-2023-37576 and prevent potential exploitation.

Immediate Steps to Take

Update GTKWave to a patched version that addresses the use-after-free vulnerability.
Avoid opening or interacting with untrusted .vcd files to mitigate the risk of exploitation.

Long-Term Security Practices

Regularly update software and systems to ensure the latest security patches are applied.
Educate users about safe file handling practices to prevent falling victim to malicious files.

Patching and Updates

Stay informed about security advisories from GTKWave and promptly apply any patches or updates released to address CVE-2023-37576.