CVE-2020-27191 Explained : Impact and Mitigation

LionWiki before 3.2.12 allows an unauthenticated user to read files as the web server user via crafted string in the index.php f1 variable, known as Local File Inclusion. This vulnerability impacts products that are no longer supported by the maintainer.

Understanding CVE-2020-27191

This CVE identifies a security issue in LionWiki before version 3.2.12 that enables unauthorized access to files on the server.

What is CVE-2020-27191?

CVE-2020-27191, also known as Local File Inclusion in LionWiki, allows unauthenticated users to read files as the web server user by manipulating the f1 variable in index.php.

The Impact of CVE-2020-27191

The vulnerability poses a risk as it enables unauthorized users to access sensitive files on the server, potentially leading to data breaches or unauthorized information disclosure.

Technical Details of CVE-2020-27191

LionWiki before version 3.2.12 is susceptible to Local File Inclusion, allowing unauthorized file access.

Vulnerability Description

The flaw in LionWiki allows an unauthenticated user to read files as the web server user by exploiting a crafted string in the index.php f1 variable.

Affected Systems and Versions

LionWiki versions before 3.2.12
Products that are no longer supported by the maintainer

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the f1 variable in the index.php file to access files on the server.

Mitigation and Prevention

To address CVE-2020-27191, follow these steps:

Immediate Steps to Take

Upgrade LionWiki to version 3.2.12 or later.
Avoid using products that are no longer supported by the maintainer.

Long-Term Security Practices

Regularly monitor and update software to prevent vulnerabilities.
Implement access controls to restrict unauthorized file access.

Patching and Updates

Apply patches and updates provided by LionWiki to fix the Local File Inclusion vulnerability.