CVE-2017-5081 Explained : Impact and Mitigation

Google Chrome prior to version 59.0.3071.86 for Mac, Windows, and Linux, and 59.0.3071.92 for Android had a vulnerability that allowed attackers to modify extensions by locally editing extension files.

Understanding CVE-2017-5081

An inappropriate implementation in Google Chrome allowed attackers with local write access to modify extensions by manipulating extension files.

What is CVE-2017-5081?

The vulnerability in Google Chrome versions before 59.0.3071.86 for Mac, Windows, and Linux, and 59.0.3071.92 for Android stemmed from the lack of verification for an extension's locale folder, enabling attackers to alter extensions.

The Impact of CVE-2017-5081

Attackers with local write access could modify extensions by editing extension files.

Technical Details of CVE-2017-5081

Google Chrome vulnerability details:

Vulnerability Description

Lack of verification of an extension's locale folder allowed attackers to modify extensions by altering extension files.

Affected Systems and Versions

Google Chrome versions prior to 59.0.3071.86 for Mac, Windows, and Linux, and 59.0.3071.92 for Android.

Exploitation Mechanism

Attackers needed local write access to exploit the vulnerability.

Mitigation and Prevention

Steps to address and prevent the vulnerability:

Immediate Steps to Take

Update Google Chrome to version 59.0.3071.86 for Mac, Windows, and Linux, and 59.0.3071.92 for Android.
Regularly monitor extension files for unauthorized modifications.

Long-Term Security Practices

Implement least privilege access to limit write permissions.
Educate users on extension security best practices.

Patching and Updates

Stay informed about security updates from Google Chrome and apply patches promptly.