CVE-2023-39235 : What You Need to Know

This article provides detailed information about CVE-2023-39235, including its description, impact, technical details, and mitigation steps.

Understanding CVE-2023-39235

In this section, we will delve into the specifics of CVE-2023-39235.

What is CVE-2023-39235?

CVE-2023-39235 involves multiple out-of-bounds write vulnerabilities in the VZT vzt_rd_process_block autosort functionality of GTKWave 3.3.115. These vulnerabilities can be exploited by a specially crafted .vzt file, leading to arbitrary code execution. The exploit scenario involves the out-of-bounds write when looping over

lt->num_time_ticks

.

The Impact of CVE-2023-39235

The impact of CVE-2023-39235 is significant, with a CVSS base score of 7.8, indicating a high severity level. The confidentiality, integrity, and availability of affected systems are all at risk.

Technical Details of CVE-2023-39235

This section covers the technical aspects of CVE-2023-39235 in more detail.

Vulnerability Description

The vulnerability lies in the improper validation of array index (CWE-129), allowing attackers to exploit out-of-bounds write flaws.

Affected Systems and Versions

GTKWave version 3.3.115 is specifically impacted by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by enticing a victim to open a malicious .vzt file, triggering the out-of-bounds write flaw.

Mitigation and Prevention

To protect systems from CVE-2023-39235, immediate action is necessary.

Immediate Steps to Take

Users are advised to update GTKWave to a patched version and avoid opening untrusted .vzt files.

Long-Term Security Practices

Implementing secure coding practices and regularly updating software can help prevent similar vulnerabilities in the future.

Patching and Updates

Stay informed about security updates for GTKWave and promptly apply patches to mitigate the risks posed by CVE-2023-39235.