CVE-2020-36314 : Exploit Details and Defense Strategies

A vulnerability in GNOME file-roller through version 3.38.0 could allow Directory Traversal during extraction due to a missing symlink check, impacting GNOME Shell and other software.

Understanding CVE-2020-36314

What is CVE-2020-36314?

The vulnerability in fr-archive-libarchive.c in GNOME file-roller allows Directory Traversal during extraction, leading to potential security risks.

The Impact of CVE-2020-36314

The vulnerability could be exploited to perform unauthorized file access and potentially execute malicious code on affected systems.

Technical Details of CVE-2020-36314

Vulnerability Description

The issue arises from a lack of verification on whether a file's parent is a symlink in specific scenarios, enabling attackers to traverse directories.

Affected Systems and Versions

GNOME file-roller through version 3.38.0
GNOME Shell and other software utilizing the affected file-roller

Exploitation Mechanism

Attackers can exploit the vulnerability by crafting a malicious archive file that, when extracted, could traverse directories and access unauthorized files.

Mitigation and Prevention

Immediate Steps to Take

Update GNOME file-roller to version 3.38.1 or later to patch the vulnerability
Exercise caution when extracting files from untrusted sources

Long-Term Security Practices

Regularly update software and systems to mitigate known vulnerabilities
Implement file access controls and restrictions to prevent unauthorized access

Patching and Updates

Apply security patches promptly to ensure that systems are protected against known vulnerabilities.