CVE-2023-35969 : Exploit Details and Defense Strategies

A detailed examination of multiple heap-based buffer overflow vulnerabilities in GTKWave 3.3.115, allowing for arbitrary code execution via a specially crafted .fst file.

Understanding CVE-2023-35969

This CVE entry highlights critical vulnerabilities in GTKWave 3.3.115 that could be exploited for unauthorized code execution.

What is CVE-2023-35969?

The CVE-2023-35969 pertains to multiple heap-based buffer overflow vulnerabilities within the chain_table parsing functionality of GTKWave 3.3.115. In the presence of a maliciously designed .fst file, an attacker could potentially execute arbitrary code on the target system. The specific concern lies in the chain_table of

FST_BL_VCDATA

and

FST_BL_VCDATA_DYN_ALIAS

section types.

The Impact of CVE-2023-35969

With a CVSS base score of 7.8, this vulnerability poses a high risk to confidentiality, integrity, and availability. If successfully exploited, an attacker can execute arbitrary code on the victim's system, with no privileges required for exploitation.

Technical Details of CVE-2023-35969

Exploring the vulnerability, affected systems, and potential exploitation mechanisms.

Vulnerability Description

The vulnerability originates from improper memory buffer operations, allowing an attacker to overflow heap-based buffers and trigger unauthorized code execution in the context of the targeted application.

Affected Systems and Versions

The vulnerability impacts GTKWave version 3.3.115. Users operating this specific version are at risk of falling prey to potential attacks leveraging this security flaw.

Exploitation Mechanism

By leveraging specially crafted .fst files, threat actors can exploit the chain_table parsing functionality of GTKWave 3.3.115 to execute arbitrary code, thereby jeopardizing system security.

Mitigation and Prevention

Guidance on mitigating the risks associated with CVE-2023-35969 and preventing potential exploitation.

Immediate Steps to Take

Users are advised to refrain from opening untrusted or suspicious .fst files, particularly within the GTKWave application, to prevent possible exploitation of these vulnerabilities.

Long-Term Security Practices

Ensure timely software updates and patches are applied to address the CVE-2023-35969 vulnerability. Additionally, practicing good cyber hygiene and maintaining vigilance against suspicious files can bolster system security.

Patching and Updates

Stay informed about security advisories and updates released by GTKWave to address the CVE-2023-35969 vulnerability and apply patches promptly to secure your system.