CVE-2018-20762 : Vulnerability Insights and Analysis

GPAC version 0.7.1 and earlier are affected by a buffer overflow vulnerability in the cat_multiple_files function when using MP4Box with manipulated filenames.

Understanding CVE-2018-20762

This CVE involves a buffer overflow vulnerability in GPAC versions 0.7.1 and prior, specifically in the cat_multiple_files function.

What is CVE-2018-20762?

The cat_multiple_files function in fileimport.c within GPAC versions 0.7.1 and earlier is vulnerable to a buffer overflow issue. This vulnerability occurs when MP4Box is utilized with a particular local directory containing manipulated filenames.

The Impact of CVE-2018-20762

The buffer overflow vulnerability in GPAC could allow an attacker to execute arbitrary code or crash the application, potentially leading to a denial of service (DoS) condition.

Technical Details of CVE-2018-20762

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The vulnerability arises in the cat_multiple_files function in fileimport.c within GPAC versions 0.7.1 and earlier when MP4Box is used with a local directory containing crafted filenames.

Affected Systems and Versions

Affected Version: GPAC versions 0.7.1 and prior

Exploitation Mechanism

The vulnerability can be exploited by an attacker by manipulating filenames in a specific local directory when using MP4Box.

Mitigation and Prevention

To address CVE-2018-20762, follow these mitigation strategies:

Immediate Steps to Take

Update GPAC to the latest patched version
Avoid using MP4Box with untrusted or manipulated filenames

Long-Term Security Practices

Regularly update software and apply security patches
Implement file input validation to prevent buffer overflow vulnerabilities

Patching and Updates

Ensure timely installation of security updates and patches provided by GPAC to mitigate the vulnerability.