CVE-2017-7807 : Vulnerability Insights and Analysis
Learn about CVE-2017-7807, a vulnerability in Thunderbird, Firefox ESR, and Firefox versions allowing domain hijacking through AppCache fallback. Find mitigation steps and updates here.
A vulnerability affecting Thunderbird, Firefox ESR, and Firefox versions that allows domain hijacking through AppCache fallback.
Understanding CVE-2017-7807
What is CVE-2017-7807?
This vulnerability exploits AppCache to control a URL within a domain by serving files from a sub-path on the same domain.
The Impact of CVE-2017-7807
This vulnerability affects Thunderbird versions prior to 52.3, Firefox ESR versions prior to 52.3, and Firefox versions prior to 55.
Technical Details of CVE-2017-7807
Vulnerability Description
The vulnerability allows an attacker to hijack a URL within a domain using AppCache fallback.
Affected Systems and Versions
- Thunderbird versions prior to 52.3
- Firefox ESR versions prior to 52.3
- Firefox versions prior to 55
Exploitation Mechanism
The exploit involves serving files from a sub-path on the same domain to take control of a URL within the domain.
Mitigation and Prevention
Immediate Steps to Take
- Ensure fallback files are located within the manifest directory.
- Update Thunderbird, Firefox ESR, and Firefox to versions 52.3 and 55 respectively.
Long-Term Security Practices
- Regularly update software to the latest versions.
- Implement secure coding practices to prevent similar vulnerabilities.
Patching and Updates
Apply patches provided by Mozilla to address the vulnerability.