CVE-2023-39964 : Exploit Details and Defense Strategies

A critical vulnerability has been identified in 1Panel O&M management panel that allows for arbitrary file reading, potentially leading to unauthorized access to sensitive data and configuration files.

Understanding CVE-2023-39964

This vulnerability affects 1Panel version 1.4.3, posing a significant risk to the confidentiality of important files on the server.

What is CVE-2023-39964?

1Panel, an open-source Linux server operation and maintenance management panel, suffers from an arbitrary file reading flaw. Attackers can exploit this vulnerability to read critical server configuration files by manipulating the

path

parameter in the

api/v1/file.go

file.

The Impact of CVE-2023-39964

With a base severity rating of HIGH and confidentiality impact rated as HIGH, CVE-2023-39964 can expose sensitive information, posing a serious threat to the security and integrity of the server.

Technical Details of CVE-2023-39964

The vulnerability lies in an unfiltered request parameter, allowing attackers to read arbitrary files on the server.

Vulnerability Description

In 1Panel version 1.4.3, the

LoadFromFile

function directly reads files based on user-requested paths, leading to unauthorized file access.

Affected Systems and Versions

Vendor: 1Panel-dev
Product: 1Panel
Affected Version: 1.4.3

Exploitation Mechanism

By manipulating the

path

parameter in the

api/v1/file.go

file, threat actors can exploit this vulnerability to read sensitive server files.

Mitigation and Prevention

It is crucial to take immediate action to secure your systems.

Immediate Steps to Take

Upgrade to version 1.5.0 of 1Panel, which includes a patch for CVE-2023-39964.
Restrict access to the management panel to authorized users only.

Long-Term Security Practices

Regularly monitor and audit file access logs to detect any unauthorized activities.
Implement proper input validation and filtering mechanisms to prevent path traversal attacks.

Patching and Updates

Ensure timely installation of security patches and updates to protect your systems from known vulnerabilities.