CVE-2018-6758 : Security Advisory and Response

A buffer overflow vulnerability in Unbit uWSGI versions up to 2.0.15 can be exploited by providing an excessively long directory length, leading to a stack-based buffer overflow.

Understanding CVE-2018-6758

This CVE involves a specific vulnerability in the uwsgi_expand_path function in core/utils.c in Unbit uWSGI.

What is CVE-2018-6758?

The vulnerability arises due to a buffer overflow in the uwsgi_expand_path function caused by excessively long directory lengths, resulting in a stack-based buffer overflow.

The Impact of CVE-2018-6758

The vulnerability allows attackers to trigger a stack-based buffer overflow by providing a long directory length, potentially leading to arbitrary code execution or denial of service.

Technical Details of CVE-2018-6758

This section delves into the technical aspects of the CVE.

Vulnerability Description

The buffer overflow vulnerability occurs in the uwsgi_expand_path function in core/utils.c in Unbit uWSGI versions up to 2.0.15. It is triggered by excessively long directory lengths.

Affected Systems and Versions

Product: Unbit uWSGI
Vendor: Unbit
Versions affected: Up to 2.0.15

Exploitation Mechanism

The vulnerability is exploited by providing an excessively long directory length, causing a stack-based buffer overflow.

Mitigation and Prevention

Protecting systems from CVE-2018-6758 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply the security update provided by Unbit uWSGI promptly.
Monitor for any unusual activities on the system.

Long-Term Security Practices

Implement principle of least privilege to restrict access.
Regularly update and patch software to prevent vulnerabilities.

Patching and Updates

Ensure that the system is updated with the latest security patches and versions of Unbit uWSGI.