CVE-2023-33251 Explained : Impact and Mitigation

A security vulnerability has been identified in Akka HTTP before version 10.5.2 that allows unauthorized users to read temporary files created during file uploads. This CVE entry provides an overview of the issue, its impact, technical details, and mitigation strategies.

Understanding CVE-2023-33251

This section delves into the specifics of the CVE-2023-33251 vulnerability, shedding light on its implications and potential risks.

What is CVE-2023-33251?

The CVE-2023-33251 vulnerability arises when Akka HTTP, prior to version 10.5.2, mishandles file uploads using the FileUploadDirectives.fileUploadAll directive. This results in the creation of temporary files with insecure permissions, making them readable by other users on Linux or UNIX systems.

The Impact of CVE-2023-33251

The vulnerability poses a security risk by granting unauthorized access to sensitive files uploaded through Akka HTTP. Attackers with access to the temporary files can potentially compromise confidential data stored within them.

Technical Details of CVE-2023-33251

Explore the technical aspects of CVE-2023-33251 to gain a deeper understanding of the vulnerability and its implications.

Vulnerability Description

The issue stems from Akka HTTP's improper handling of file uploads, leading to the creation of temporary files with weak permissions. This oversight allows attackers to read these files, posing a threat to data confidentiality.

Affected Systems and Versions

All installations running Akka HTTP versions prior to 10.5.2 are vulnerable to CVE-2023-33251. Users are advised to upgrade to the latest secure version to mitigate the risk of exploitation.

Exploitation Mechanism

Attackers can exploit this vulnerability by leveraging the weak file permissions set by Akka HTTP during the file upload process. By reading the temporary files, malicious actors can access sensitive data and potentially launch further attacks.

Mitigation and Prevention

Learn how to address the CVE-2023-33251 vulnerability effectively to safeguard your systems and data.

Immediate Steps to Take

To mitigate the risk associated with CVE-2023-33251, users are strongly encouraged to update Akka HTTP to version 10.5.2 or newer. Additionally, restrict access to uploaded files and directories to authorized users only.

Long-Term Security Practices

Implement secure coding practices and regularly audit file handling mechanisms within your applications to prevent similar vulnerabilities in the future. Conduct security assessments to identify and address any existing weaknesses proactively.

Patching and Updates

Stay informed about security patches and updates released by Akka HTTP developers. Promptly apply patches to ensure that your systems are protected against known vulnerabilities, including CVE-2023-33251.