CVE-2018-7490 : What You Need to Know

uWSGI before version 2.0.17 mishandles a DOCUMENT_ROOT check when using the --php-docroot option, potentially allowing for directory traversal.

Understanding CVE-2018-7490

An issue was identified in uWSGI versions prior to 2.0.17 where the check for DOCUMENT_ROOT was not properly handled when using the --php-docroot option. This flaw could potentially allow for directory traversal.

What is CVE-2018-7490?

uWSGI before 2.0.17 mishandles a DOCUMENT_ROOT check during use of the --php-docroot option, allowing directory traversal.

The Impact of CVE-2018-7490

This vulnerability could be exploited to perform directory traversal attacks, potentially leading to unauthorized access to sensitive files or data on the affected system.

Technical Details of CVE-2018-7490

Vulnerability Description

The vulnerability in uWSGI versions prior to 2.0.17 arises from improper handling of the DOCUMENT_ROOT check when utilizing the --php-docroot option, which could be exploited for directory traversal.

Affected Systems and Versions

Affected Version: uWSGI versions prior to 2.0.17

Exploitation Mechanism

The flaw allows malicious actors to manipulate the --php-docroot option to traverse directories beyond the intended scope, potentially accessing unauthorized files.

Mitigation and Prevention

Immediate Steps to Take

Update uWSGI to version 2.0.17 or newer to mitigate the vulnerability.
Avoid using the --php-docroot option if possible to reduce the risk of exploitation.

Long-Term Security Practices

Regularly monitor and apply security patches for uWSGI and other software components.
Implement access controls and restrictions to limit directory traversal possibilities.

Patching and Updates

Ensure timely installation of updates and patches provided by uWSGI to address security vulnerabilities.