CVE-2020-12408 : Security Advisory and Response

A vulnerability in Firefox < 77 allows attackers to manipulate the address bar when browsing documents hosted on IP addresses.

Understanding CVE-2020-12408

This CVE involves URL spoofing in Firefox versions below 77 when accessing documents via IP addresses.

What is CVE-2020-12408?

When users view documents hosted on IP addresses, malicious actors can exploit this vulnerability to alter domain and path details in the address bar, leading to potential phishing attacks.

The Impact of CVE-2020-12408

This vulnerability enables URL spoofing, allowing attackers to deceive users into visiting malicious websites by manipulating the displayed address.

Technical Details of CVE-2020-12408

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

Vulnerability Description

The flaw in Firefox < 77 permits threat actors to modify domain and path information in the address bar when accessing documents via IP addresses.

Affected Systems and Versions

Product: Firefox
Vendor: Mozilla
Versions Affected: < 77

Exploitation Mechanism

Attackers can insert specific characters into the address bar while viewing documents on IP addresses to manipulate displayed domain and path information.

Mitigation and Prevention

Protecting systems from CVE-2020-12408 requires immediate actions and long-term security measures.

Immediate Steps to Take

Update Firefox to version 77 or higher to mitigate the vulnerability.
Avoid accessing documents via IP addresses to reduce the risk of exploitation.

Long-Term Security Practices

Educate users on identifying phishing attempts to prevent falling victim to URL spoofing attacks.
Implement browser security best practices to enhance overall protection.

Patching and Updates

Regularly apply security patches and updates provided by Mozilla to address known vulnerabilities and enhance browser security.