CVE-2023-38653 : Security Advisory and Response

This article provides detailed information about CVE-2023-38653, including its description, impact, technical details, and mitigation strategies.

Understanding CVE-2023-38653

CVE-2023-38653 is a vulnerability found in GTKWave version 3.3.115, involving multiple integer overflow issues in the VZT vzt_rd_block_vch_decode dict parsing functionality.

What is CVE-2023-38653?

The vulnerability in GTKWave can be exploited through a specially crafted .vzt file, leading to memory corruption. Opening a malicious file triggers the vulnerability due to an integer overflow when num_time_ticks is zero.

The Impact of CVE-2023-38653

The impact of this vulnerability is rated as high, affecting confidentiality, integrity, and availability. An attacker can execute arbitrary code or crash the application, potentially leading to further system compromise.

Technical Details of CVE-2023-38653

The technical details include the vulnerability description, affected systems, and how the exploitation can occur.

Vulnerability Description

The issue arises from integer overflow vulnerabilities in the dict parsing functionality of GTKWave 3.3.115, triggered by a specially crafted .vzt file.

Affected Systems and Versions

GTKWave version 3.3.115 is specifically affected by this vulnerability.

Exploitation Mechanism

Exploiting this vulnerability requires the victim to open a malicious .vzt file that triggers the integer overflow when certain conditions are met.

Mitigation and Prevention

Mitigation strategies and best practices to protect systems from CVE-2023-38653.

Immediate Steps to Take

Users are advised to update GTKWave to a non-vulnerable version and avoid opening untrusted .vzt files. Implementing proper input validation can also mitigate the risk.

Long-Term Security Practices

Regularly updating software, conducting security assessments, and educating users on safe file handling practices are essential for long-term security.

Patching and Updates

Stay informed about security updates for GTKWave and apply patches promptly to address known vulnerabilities.