CVE-2020-7665 : What You Need to Know

This CVE-2020-7665 article provides insights into a vulnerability affecting the package github.com/u-root/u-root/pkg/uzip, leading to arbitrary file write via archive extraction (Zip Slip).

Understanding CVE-2020-7665

This CVE involves a vulnerability in the zip file extraction process of the package github.com/u-root/u-root/pkg/uzip, allowing for both leading and non-leading relative path traversal attacks.

What is CVE-2020-7665?

CVE-2020-7665 is a security vulnerability that impacts all versions of the package github.com/u-root/u-root/pkg/uzip, potentially leading to arbitrary file write through archive extraction.

The Impact of CVE-2020-7665

The vulnerability has a CVSS v3.1 base score of 7.5, indicating a high severity issue with a low attack complexity. It can result in high integrity impact without requiring privileges or user interaction.

Technical Details of CVE-2020-7665

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability allows for arbitrary file write via archive extraction, specifically through Zip Slip attacks in the zip file extraction process.

Affected Systems and Versions

Package: github.com/u-root/u-root/pkg/uzip
Vendor: Not applicable
Versions affected: All versions with a custom version type of '0'

Exploitation Mechanism

The vulnerability can be exploited through leading and non-leading relative path traversal attacks during the extraction of zip files.

Mitigation and Prevention

Protecting systems from CVE-2020-7665 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the affected package to a secure version if available
Implement input validation to prevent path traversal attacks
Monitor and restrict file system access

Long-Term Security Practices

Regularly update software and dependencies
Conduct security audits and penetration testing
Educate developers on secure coding practices

Patching and Updates

Apply patches provided by the package maintainers
Stay informed about security advisories and updates from relevant sources