CVE-2018-5105 : What You Need to Know
Learn about CVE-2018-5105 affecting Firefox versions prior to 58. Understand the risk of WebExtensions bypassing user prompts for file execution and how to mitigate the vulnerability.
WebExtensions in Firefox versions prior to 58 have a vulnerability that allows bypassing user prompts for saving and opening downloaded files, potentially leading to the execution of malicious files without user consent.
Understanding CVE-2018-5105
WebExtensions in Firefox versions prior to 58 can execute downloaded files without user prompts, posing a security risk.
What is CVE-2018-5105?
This CVE refers to a vulnerability in Firefox that enables WebExtensions to run downloaded files without user consent, potentially granting them the same permissions as the local user.
The Impact of CVE-2018-5105
The vulnerability allows malicious files to execute with local user privileges, bypassing the need for explicit user consent, which can lead to unauthorized system access and potential harm.
Technical Details of CVE-2018-5105
WebExtensions in Firefox versions prior to 58 are susceptible to executing downloaded files without user interaction.
Vulnerability Description
WebExtensions in Firefox < 58 can bypass user prompts, allowing downloaded files to run with local user privileges without explicit consent.
Affected Systems and Versions
- Product: Firefox
- Vendor: Mozilla
- Versions Affected: < 58
Exploitation Mechanism
The vulnerability enables WebExtensions to save and execute files on the local file system without requiring user prompts, potentially leading to unauthorized file execution.
Mitigation and Prevention
To address CVE-2018-5105, immediate actions and long-term security practices are essential.
Immediate Steps to Take
- Update Firefox to version 58 or higher to mitigate the vulnerability.
- Exercise caution when downloading and opening files from untrusted sources.
Long-Term Security Practices
- Regularly update browsers and software to the latest versions.
- Implement security measures to prevent unauthorized file execution.
Patching and Updates
Apply patches and updates provided by Mozilla to ensure the security of Firefox and prevent exploitation of this vulnerability.