CVE-2023-35126 Explained : Impact and Mitigation

A critical out-of-bounds write vulnerability has been discovered in Ichitaro 2023 version 1.0.1.59372. This vulnerability could allow an attacker to execute arbitrary code by exploiting specially crafted documents. Here's what you need to know about CVE-2023-35126.

Understanding CVE-2023-35126

This section provides detailed insights into the nature of the vulnerability and its potential impact on affected systems.

What is CVE-2023-35126?

The vulnerability lies within the parsers for "DocumentViewStyles" and "DocumentEditStyles" streams of Ichitaro 2023 version 1.0.1.59372. By manipulating a specific type of style record, attackers can trigger memory corruption, leading to arbitrary code execution.

The Impact of CVE-2023-35126

Given a CVSS base score of 7.8, this vulnerability poses a high risk to affected systems. Attackers could exploit it to compromise confidentiality, integrity, and availability of the system.

Technical Details of CVE-2023-35126

This section delves into the technical aspects of the vulnerability, including its description, affected systems, and the exploitation mechanism.

Vulnerability Description

The flaw stems from an improper validation of array index (CWE-129) within the Ichitaro 2023 parser. Specifically, types 0x0000-0x0009 of a style record with type 0x2008 are vulnerable to exploitation.

Affected Systems and Versions

Ichitaro 2023 version 1.0.1.59372 is confirmed to be affected by this vulnerability. Users of this specific version are at risk and should take immediate action to mitigate this threat.

Exploitation Mechanism

An attacker can craft a malicious document to exploit this vulnerability, triggering memory corruption that can be leveraged for executing arbitrary code on the target system.

Mitigation and Prevention

In this section, we outline the steps that organizations and users can take to protect themselves from CVE-2023-35126.

Immediate Steps to Take

Users should refrain from opening or interacting with untrusted documents, especially those received from unknown or suspicious sources.
Implementing security updates and patches from the vendor is crucial to address this vulnerability.

Long-Term Security Practices

Regularly update software and applications to ensure that known vulnerabilities are patched promptly.
Educate users on safe browsing habits and the importance of verifying the authenticity of files before opening or downloading them.

Patching and Updates

Vendor-provided patches and updates should be applied promptly to mitigate the risk posed by CVE-2023-35126.