CVE-2023-0950 : What You Need to Know

This CVE involves an Array Index UnderFlow vulnerability in the spreadsheet component of The Document Foundation LibreOffice, allowing an attacker to execute arbitrary code by crafting a specially designed spreadsheet document.

Understanding CVE-2023-0950

This section provides detailed insights into what CVE-2023-0950 entails, including its impact, technical details, and mitigation strategies.

What is CVE-2023-0950?

CVE-2023-0950 is an Improper Validation of Array Index vulnerability in LibreOffice that arises from certain malformed spreadsheet formulas, like AGGREGATE, being created with fewer parameters than expected. This leads to an array index underflow, opening up the possibility of arbitrary code execution.

The Impact of CVE-2023-0950

The impact of this vulnerability is significant as it could allow an attacker to create a malicious spreadsheet that triggers an array index underflow, potentially leading to the execution of arbitrary code on the affected system.

Technical Details of CVE-2023-0950

In this section, we delve into the technical aspects of the CVE, including vulnerability description, affected systems and versions, and exploitation mechanism.

Vulnerability Description

The vulnerability in LibreOffice stems from improper validation of array index, specifically in the spreadsheet component. Attackers can exploit this flaw by crafting malicious spreadsheet documents to trigger an array index underflow.

Affected Systems and Versions

The Document Foundation's LibreOffice versions 7.4 prior to 7.4.6 and 7.5 prior to 7.5.1 are affected by CVE-2023-0950 due to the array index underflow vulnerability in the spreadsheet component.

Exploitation Mechanism

By creating specially crafted spreadsheet documents with malformed formulas, attackers can exploit the CVE by causing an array index underflow during formula interpretation, potentially leading to the execution of arbitrary code.

Mitigation and Prevention

This section outlines the steps to mitigate the CVE's impact, safeguard systems, and prevent future vulnerabilities.

Immediate Steps to Take

Users are advised to update their LibreOffice installations to version 7.4.6 or 7.5.1 to patch the vulnerability and prevent potential exploitation. Additionally, exercising caution when opening spreadsheet files from unknown or untrusted sources is crucial.

Long-Term Security Practices

Practicing good cybersecurity hygiene, such as regular software updates, security monitoring, and employee education on phishing tactics, can help enhance overall system security and resilience against potential threats.

Patching and Updates

Staying informed about security advisories from The Document Foundation and other relevant sources is essential. Applying security patches promptly and keeping software up-to-date can help prevent exploitation of known vulnerabilities like CVE-2023-0950.