CVE-2023-39413 : Security Advisory and Response

This article provides an overview of CVE-2023-39413, detailing the impact, technical aspects, and mitigation strategies associated with this vulnerability in GTKWave.

Understanding CVE-2023-39413

CVE-2023-39413 refers to multiple integer underflow vulnerabilities present in the LXT2 lxt2_rd_iter_radix shift operation functionality of GTKWave version 3.3.115. These vulnerabilities could result in memory corruption when a specially crafted .lxt2 file is processed, potentially leading to exploitation.

What is CVE-2023-39413?

The vulnerability arises from integer underflow during the left shift operation in GTKWave 3.3.115, allowing an attacker to trigger memory corruption by enticing a user to open a malicious file.

The Impact of CVE-2023-39413

With a CVSS v3.1 base score of 7 (High), this vulnerability poses a significant risk with a local attack vector, high attack complexity, and impacts on confidentiality, integrity, and availability of affected systems.

Technical Details of CVE-2023-39413

This section delves into specific technical aspects of the CVE-2023-39413 vulnerability.

Vulnerability Description

The vulnerability stems from integer underflow weaknesses in the LXT2 lxt2_rd_iter_radix shift operation functionality of GTKWave 3.3.115, facilitating memory corruption through crafted files.

Affected Systems and Versions

GTKWave version 3.3.115 is confirmed to be affected by these integer underflow vulnerabilities, highlighting the importance of upgrading to a secure version.

Exploitation Mechanism

By exploiting the integer underflow in the left shift operation, threat actors can execute malicious actions leading to memory corruption and potential system compromise.

Mitigation and Prevention

In light of CVE-2023-39413's implications, it is crucial for users and administrators to implement effective mitigation strategies to safeguard systems and data.

Immediate Steps to Take

Users are advised to exercise caution when handling untrusted .lxt2 files, avoiding opening them unless from a trusted source. Additionally, consider implementing access controls and file validation mechanisms to mitigate risks.

Long-Term Security Practices

Regular security training, system monitoring, and software updates are essential practices to enhance resilience against similar vulnerabilities and cyber threats.

Patching and Updates

Ensure timely installation of security patches and updates provided by GTKWave to address the identified integer underflow vulnerabilities and enhance system security.