CVE-2019-15845 : What You Need to Know

Ruby versions 2.4.7, 2.5.x (up to 2.5.6), and 2.6.x (up to 2.6.4) have a flaw in the way they handle path checking in File.fnmatch functions.

Understanding CVE-2019-15845

This CVE involves a vulnerability in Ruby versions 2.4.7, 2.5.x, and 2.6.x related to path checking in File.fnmatch functions.

What is CVE-2019-15845?

CVE-2019-15845 is a security vulnerability found in Ruby versions 2.4.7, 2.5.x, and 2.6.x, impacting the way path checking is handled in File.fnmatch functions.

The Impact of CVE-2019-15845

The vulnerability could potentially allow attackers to exploit path checking mechanisms in Ruby, leading to security breaches and unauthorized access to sensitive information.

Technical Details of CVE-2019-15845

This section provides more in-depth technical details about the CVE.

Vulnerability Description

Ruby through versions 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 mishandles path checking within File.fnmatch functions.

Affected Systems and Versions

Ruby 2.4.7
Ruby 2.5.x (up to 2.5.6)
Ruby 2.6.x (up to 2.6.4)

Exploitation Mechanism

The flaw in path checking within File.fnmatch functions could be exploited by malicious actors to bypass security measures and potentially execute unauthorized actions.

Mitigation and Prevention

Protecting systems from CVE-2019-15845 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Ruby to a patched version that addresses the vulnerability.
Monitor for any suspicious activities on the system.
Implement access controls to limit potential exploitation.

Long-Term Security Practices

Regularly update Ruby and other software to the latest secure versions.
Conduct security audits and penetration testing to identify and address vulnerabilities.

Patching and Updates

Apply patches provided by Ruby to fix the path checking issue and enhance system security.