CVE-2023-47621 Explained : Impact and Mitigation

This article discusses the remote code execution vulnerability in the "guest-entries" product, affecting versions prior to 3.1.2.

Understanding CVE-2023-47621

This CVE identifies a flaw in file upload functionality that allows the upload of PHP files, potentially leading to code execution by authenticated users.

What is CVE-2023-47621?

The vulnerability in the Guest Entries php library allows attackers to execute remote code via file uploads, impacting confidentiality, integrity, and availability.

The Impact of CVE-2023-47621

The high-severity flaw enables threat actors to compromise the server, execute malicious PHP code, and perform unauthorized actions on the system.

Technical Details of CVE-2023-47621

The vulnerability allows unrestricted upload of files with dangerous types, specifically PHP files, leading to remote code execution.

Vulnerability Description

Guest Entries library versions prior to 3.1.2 fail to block the upload of PHP files, facilitating attackers to execute arbitrary code.

Affected Systems and Versions

Vendor: duncanmcclean
Product: guest-entries
Affected Versions: < 3.1.2

Exploitation Mechanism

Attackers can leverage the file upload feature to upload malicious PHP files, gaining the ability to execute code on the server remotely.

Mitigation and Prevention

Addressing CVE-2023-47621 is critical to prevent unauthorized code execution and protect system integrity.

Immediate Steps to Take

Upgrade to version 3.1.2 of the Guest Entries library to patch the vulnerability and prevent exploitation.

Long-Term Security Practices

Regularly update software and libraries to the latest versions to stay protected against known vulnerabilities.

Patching and Updates

Ensure timely application of patches and updates to all software components to mitigate security risks.