CVE-2018-18511 Explained : Impact and Mitigation

Firefox version 65 is susceptible to a breach in the same-origin policy, allowing the extraction of cross-origin images from a canvas element using the transferFromImageBitmap function.

Understanding CVE-2018-18511

This CVE involves a specific vulnerability in Firefox version 65 that enables the unauthorized access of cross-origin images.

What is CVE-2018-18511?

The vulnerability in Firefox 65 allows malicious actors to extract cross-origin images from a canvas element by exploiting the transferFromImageBitmap function.

The Impact of CVE-2018-18511

This vulnerability poses a risk of unauthorized access to sensitive cross-origin images, potentially leading to data theft or unauthorized use of images.

Technical Details of CVE-2018-18511

Firefox version 65 is affected by a specific vulnerability that allows the breach of the same-origin policy.

Vulnerability Description

The transferFromImageBitmap function in Firefox 65 can be exploited to read cross-origin images from a canvas element, violating the same-origin policy.

Affected Systems and Versions

Product: Firefox
Vendor: Mozilla
Versions Affected: < 65.0.1

Exploitation Mechanism

Malicious actors can exploit the transferFromImageBitmap function to extract cross-origin images from a canvas element in Firefox 65.

Mitigation and Prevention

To address CVE-2018-18511, users and organizations should take immediate steps and implement long-term security practices.

Immediate Steps to Take

Update Firefox to version 65.0.1 or later to mitigate the vulnerability.
Avoid visiting untrusted websites or clicking on suspicious links to prevent exploitation.

Long-Term Security Practices

Regularly update browsers and software to patch known vulnerabilities.
Implement network security measures to detect and prevent unauthorized access to sensitive data.

Patching and Updates

Stay informed about security updates from Mozilla and apply patches promptly to secure systems and prevent exploitation.