CVE-2019-13032 : Vulnerability Insights and Analysis

FlightCrew prior to v0.9.2 is affected by a vulnerability that leads to a NULL pointer dereference in specific functions, impacting third-party software using FlightCrew as a library.

Understanding CVE-2019-13032

FlightCrew v0.9.2 and earlier versions are susceptible to a NULL pointer dereference issue in certain functions when an invalid pointer is passed, affecting external software that integrates FlightCrew as a library.

What is CVE-2019-13032?

The vulnerability in FlightCrew before v0.9.2 triggers a NULL pointer dereference in GetRelativePathToNcx() or GetRelativePathsToXhtmlDocuments() when an invalid pointer is provided to xc::XMLUri::isValidURI(). This flaw impacts software utilizing FlightCrew as a library, excluding Sigil.

The Impact of CVE-2019-13032

The vulnerability allows attackers to potentially exploit the NULL pointer dereference, leading to denial of service or other malicious activities in software using FlightCrew.

Technical Details of CVE-2019-13032

FlightCrew's vulnerability in versions before v0.9.2 is detailed below:

Vulnerability Description

FlightCrew versions prior to v0.9.2 experience a NULL pointer dereference in specific functions.

Affected Systems and Versions

FlightCrew versions before v0.9.2 are affected.

Exploitation Mechanism

Attackers can exploit the vulnerability by providing a NULL pointer to xc::XMLUri::isValidURI(), triggering a NULL pointer dereference in critical functions.

Mitigation and Prevention

Steps to address and prevent the CVE-2019-13032 vulnerability:

Immediate Steps to Take

Update FlightCrew to version v0.9.2 or later to mitigate the NULL pointer dereference issue.
Implement input validation to prevent the passing of NULL pointers to vulnerable functions.

Long-Term Security Practices

Regularly monitor for security advisories and updates related to FlightCrew.
Conduct security assessments and code reviews to identify and address potential vulnerabilities.

Patching and Updates

Apply patches and updates provided by FlightCrew promptly to address known vulnerabilities.