CVE-2023-43123 : Security Advisory and Response
Learn about CVE-2023-43123, a local information disclosure vulnerability in Apache Storm's storm-core on Unix-Like systems due to temporary files. Understand the impact, affected systems, and mitigation steps.
Apache Storm: Local Information Disclosure Vulnerability in Storm-core on Unix-Like systems due temporary files
Understanding CVE-2023-43123
This CVE involves a local information disclosure vulnerability in Apache Storm's storm-core component on Unix-Like systems due to temporary files.
What is CVE-2023-43123?
The vulnerability arises from the shared temporary directory in Unix-like systems. Improper file/directory permission settings in APIs can expose sensitive information to local users through easily identifiable temporary files.
The Impact of CVE-2023-43123
Although impacting Unix-like systems, particularly local users, this vulnerability has limited practical implications due to specific conditions. However, if exploited, it can lead to the exposure of sensitive data.
Technical Details of CVE-2023-43123
This vulnerability affects Apache Storm's storm-core 2.0.0 version with a Maven type. It was identified by Andrea Cosentino from the Apache Software Foundation.
Vulnerability Description
The issue stems from File.createTempFile, creating files with default read permissions, potentially allowing local users to gain unauthorized access to sensitive data.
Affected Systems and Versions
Systems using Apache Storm version 2.0.0 with Maven are vulnerable to this information disclosure flaw.
Exploitation Mechanism
By exploiting the temporary directory sharing in Unix-like systems and the default file permission settings, attackers can access sensitive information written to temporary files.
Mitigation and Prevention
To address CVE-2023-43123, users are advised to follow immediate steps and adopt long-term security practices to safeguard sensitive data.
Immediate Steps to Take
Users are recommended to upgrade to the latest version of Apache Storm and use Files.createTempFile over File.createTempFile to create temporary files securely.
Long-Term Security Practices
Implement secure file permission settings and regularly update Apache Storm to mitigate the risk of information disclosure vulnerabilities.
Patching and Updates
Stay informed about security advisories from Apache Software Foundation and promptly apply patches and updates to ensure system security.