CVE-2023-2976 Explained : Impact and Mitigation

This CVE involves the improper use of Java's default temporary directory for file creation in

FileBackedOutputStream

in Google Guava versions 1.0 to 31.1, which impacts Unix systems and Android Ice Cream Sandwich. The vulnerability allows unauthorized access to files created by the class, posing a risk to confidentiality. Although the issue is resolved in version 32.0.0, it's advisable to upgrade to version 32.0.1 due to functionality issues in 32.0.0 on Windows.

Understanding CVE-2023-2976

This section delves into the details and implications of CVE-2023-2976.

What is CVE-2023-2976?

The CVE-2023-2976 vulnerability involves the misuse of Java's default temporary directory for file creation in Google Guava versions prior to 32.0.0, potentially exposing sensitive information to unauthorized users.

The Impact of CVE-2023-2976

The impact of CVE-2023-2976 is categorized under CAPEC-212 "Functionality Misuse," highlighting the risk of unauthorized access to files on affected systems, leading to a high confidentiality impact.

Technical Details of CVE-2023-2976

Explore the technical aspects of CVE-2023-2976 to understand its vulnerability, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability in

FileBackedOutputStream

in Google Guava versions 1.0 to 31.1 on Unix systems and Android Ice Cream Sandwich allows unauthorized users and apps with access to the default Java temporary directory to access files created by the class.

Affected Systems and Versions

Google Guava versions 1.0 to 31.1 are affected by this vulnerability on Unix systems and Android Ice Cream Sandwich.

Exploitation Mechanism

Unauthorized users and applications can exploit the vulnerability by gaining access to the default Java temporary directory and subsequently access files created by the

FileBackedOutputStream

class.

Mitigation and Prevention

Learn how to mitigate the risks posed by CVE-2023-2976 and prevent potential security breaches.

Immediate Steps to Take

It is recommended to update to Google Guava version 32.0.1 to mitigate the vulnerability while ensuring no functionality issues occur, especially on Windows systems.

Long-Term Security Practices

Implement secure coding practices, restrict access to sensitive directories, and regularly monitor and update software components to enhance overall system security.

Patching and Updates

Regularly check for security updates and patches from the software provider to address vulnerabilities promptly and maintain a secure environment.