CVE-2023-39273 : Security Advisory and Response

This article provides insights into CVE-2023-39273, a vulnerability in GTKWave 3.3.115 that can lead to arbitrary code execution through multiple integer overflow vulnerabilities.

Understanding CVE-2023-39273

CVE-2023-39273 involves integer overflow vulnerabilities in the LXT2 facgeometry parsing functionality of GTKWave 3.3.115. A specially crafted .lxt2 file can result in arbitrary code execution when opened by a victim. The primary concern is the integer overflow during

flags

array allocation.

What is CVE-2023-39273?

CVE-2023-39273 is a vulnerability in GTKWave 3.3.115 that allows arbitrary code execution via specially crafted .lxt2 files due to integer overflow vulnerabilities in the LXT2 facgeometry parsing functionality.

The Impact of CVE-2023-39273

The impact of CVE-2023-39273 is significant, with a CVSSv3.1 base score of 7.8 (High). Attackers can exploit the vulnerability to execute arbitrary code, posing a serious risk to confidentiality, integrity, and availability.

Technical Details of CVE-2023-39273

The vulnerability is classified under CWE-190: Integer Overflow or Wraparound. The CVSSv3.1 vector string for this CVE is CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, with an attack vector of LOCAL and low attack complexity.

Vulnerability Description

The vulnerability arises from multiple integer overflow issues in the LXT2 facgeometry parsing function of GTKWave 3.3.115, enabling attackers to achieve arbitrary code execution by manipulating .lxt2 files.

Affected Systems and Versions

GTKWave version 3.3.115 is affected by CVE-2023-39273 due to the identified integer overflow vulnerabilities in its LXT2 facgeometry parsing functionality.

Exploitation Mechanism

Exploiting CVE-2023-39273 involves crafting a malicious .lxt2 file that triggers the integer overflow during

flags

array allocation, leading to arbitrary code execution.

Mitigation and Prevention

Given the severity of CVE-2023-39273, immediate action and long-term security practices are essential to mitigate the risks associated with this vulnerability.

Immediate Steps to Take

Users are advised to update GTKWave to a non-vulnerable version, avoid opening untrusted .lxt2 files, and monitor for any suspicious activities indicating exploitation.

Long-Term Security Practices

Implementing secure coding practices, conducting regular security audits, and staying informed about relevant security updates can bolster the overall security posture against similar vulnerabilities.

Patching and Updates

Regularly applying security patches and updates to GTKWave can help address known vulnerabilities and protect systems from potential exploitation.