CVE-2017-7815 : What You Need to Know

A spoofing vulnerability in Firefox versions prior to 56 allows attackers to deceive users by displaying arbitrary domains in modal dialogs.

Understanding CVE-2017-7815

This CVE entry describes a spoofing attack that can be executed on non-e10s installations of Firefox.

What is CVE-2017-7815?

This vulnerability enables the use of the "data:" protocol to create modal dialogs with misleading domain origins, affecting Firefox versions below 56.

The Impact of CVE-2017-7815

The vulnerability allows attackers to deceive users by displaying false domain information in modal dialogs, potentially leading to phishing attacks.

Technical Details of CVE-2017-7815

This section provides technical insights into the CVE-2017-7815 vulnerability.

Vulnerability Description

Attackers can exploit iframes to create modal dialogs with deceptive domain origins, impacting Firefox versions earlier than 56.

Affected Systems and Versions

Product: Firefox
Vendor: Mozilla
Versions Affected: < 56

Exploitation Mechanism

Attackers utilize the "data:" protocol to generate modal dialogs with arbitrary domains, deceiving users about the dialog's origin.

Mitigation and Prevention

Protect your systems from CVE-2017-7815 with these mitigation strategies.

Immediate Steps to Take

Update Firefox to version 56 or higher to mitigate the vulnerability.
Enable e10 multiprocess to prevent the spoofing attack with modal dialogs.

Long-Term Security Practices

Regularly update browsers and enable security features to prevent similar spoofing attacks.

Patching and Updates

Stay informed about security advisories from Mozilla and promptly apply patches to secure your systems.