CVE-2023-35994 : Exploit Details and Defense Strategies

This article provides detailed information about CVE-2023-35994, including its description, impact, technical details, and mitigation steps.

Understanding CVE-2023-35994

CVE-2023-35994 is a vulnerability affecting GTKWave version 3.3.115, leading to improper array index validation vulnerabilities that can result in arbitrary code execution.

What is CVE-2023-35994?

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. A victim would need to open a malicious file to trigger these vulnerabilities. This vulnerability concerns the tdelta initialization part.

The Impact of CVE-2023-35994

The vulnerability poses a high impact, with a CVSS base score of 7.8 and high severity. Attackers can exploit this flaw to execute arbitrary code, compromising confidentiality, integrity, and availability.

Technical Details of CVE-2023-35994

The following technical details outline the vulnerability specifics:

Vulnerability Description

The vulnerability arises from improper array index validation in the tdelta functionality of GTKWave 3.3.115. Attackers can exploit this to execute arbitrary code.

Affected Systems and Versions

GTKWave version 3.3.115 is affected by this vulnerability.

Exploitation Mechanism

By manipulating a specially crafted .fst file, attackers can trigger the vulnerability to achieve arbitrary code execution.

Mitigation and Prevention

To mitigate the risks associated with CVE-2023-35994, consider the following steps:

Immediate Steps to Take

Update GTKWave to a patched version that addresses the improper array index validation vulnerabilities.
Avoid opening suspicious or untrusted .fst files to prevent exploitation.

Long-Term Security Practices

Regularly update software to the latest secure versions to address known vulnerabilities.
Educate users on safe browsing habits and handling of files to minimize exposure to malicious content.

Patching and Updates

Stay informed about security advisories and patches released by GTKWave to promptly address any vulnerabilities.