CVE-2023-35996 Explained : Impact and Mitigation

Multiple improper array index validation vulnerabilities exist in the fstReaderIterBlocks2 tdelta functionality of GTKWave 3.3.115. A specially crafted .fst file can lead to arbitrary code execution. Discover more about the impact, technical details, and mitigation of CVE-2023-35996.

Understanding CVE-2023-35996

This section provides an in-depth look at the vulnerability, its impact, technical details, and steps for mitigation.

What is CVE-2023-35996?

The CVE-2023-35996 vulnerability involves multiple improper array index validation flaws within the GTKWave 3.3.115 software. By manipulating the .fst file, attackers can execute arbitrary code on a victim's system by exploiting the tdelta functionality. Victims are at risk if they open a malicious file triggering the vulnerability.

The Impact of CVE-2023-35996

The impact of this vulnerability is rated as high due to the potential for arbitrary code execution. With a CVSS v3.1 base score of 7.8, the confidentiality, integrity, and availability of affected systems are at significant risk. Successful exploitation could result in severe consequences for users and organizations.

Technical Details of CVE-2023-35996

Gain insights into the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability arises from improper array index validation in the fstReaderIterBlocks2 tdelta function of GTKWave 3.3.115. Attackers can exploit this flaw by crafting a malicious .fst file to execute arbitrary code on vulnerable systems.

Affected Systems and Versions

GTKWave version 3.3.115 is confirmed to be impacted by this vulnerability. Users with this version installed are advised to take immediate action to prevent potential exploitation.

Exploitation Mechanism

Exploiting CVE-2023-35996 requires an attacker to create a specially crafted .fst file and entice a victim to open it. Once the file is opened, the malicious code is executed, potentially leading to unauthorized access and control over the victim's system.

Mitigation and Prevention

Learn about the immediate steps to take, long-term security practices, and the importance of timely patching and updates.

Immediate Steps to Take

Users should refrain from opening untrusted .fst files, especially from unknown or suspicious sources. Additionally, consider implementing robust endpoint protection solutions to detect and prevent potential exploitation attempts.

Long-Term Security Practices

Establish a comprehensive security policy that includes regular software updates, security awareness training for users, and continuous monitoring for unusual system behavior. These practices can help mitigate the risk of similar vulnerabilities in the future.

Patching and Updates

GTKWave users should apply security patches released by the vendor promptly. Ensure that systems are up to date with the latest software versions to address known vulnerabilities and enhance overall security posture.