CVE-2020-12404 : Exploit Details and Defense Strategies

Firefox for iOS version less than 26 is vulnerable to a security exploit related to native-to-JS bridging. This CVE-2020-12404 impacts the security of the application.

Understanding CVE-2020-12404

This CVE affects Firefox for iOS versions below 26 due to a specific security token exploit in native-to-JS bridging.

What is CVE-2020-12404?

This vulnerability arises from a unique token required for native-to-JS bridging in Firefox for iOS, which could potentially leak when used for downloading files.

The Impact of CVE-2020-12404

The vulnerability allows non-app code to call bridging functions, compromising the security of the application.

Technical Details of CVE-2020-12404

Firefox for iOS < 26 is susceptible to a security token exploit in native-to-JS bridging.

Vulnerability Description

The issue stems from a security token leakage during file downloads, enabling unauthorized access to bridging functions.

Affected Systems and Versions

Product: Firefox for iOS
Vendor: Mozilla
Versions Affected: < 26

Exploitation Mechanism

The vulnerability occurs when the unique token used for native-to-JS bridging is exposed during file downloads, allowing unauthorized access.

Mitigation and Prevention

Taking immediate steps and implementing long-term security practices are crucial to mitigate the risks associated with CVE-2020-12404.

Immediate Steps to Take

Update Firefox for iOS to version 26 or above to eliminate the vulnerability.
Avoid downloading files from untrusted sources to prevent token leakage.

Long-Term Security Practices

Regularly update applications to the latest versions to patch security vulnerabilities.
Implement secure coding practices to prevent token leakage and unauthorized access.

Patching and Updates

Stay informed about security advisories from Mozilla and apply patches promptly to secure the application.