CVE-2017-5378 : Security Advisory and Response
Learn about CVE-2017-5378, a vulnerability in Thunderbird, Firefox ESR, and Firefox versions that allows data leakage and pointer exposure through shared hashed codes in JavaScript. Find mitigation steps and updates here.
A vulnerability in Thunderbird, Firefox ESR, and Firefox versions could lead to data leakage and pointer exposure through shared hashed codes in JavaScript.
Understanding CVE-2017-5378
What is CVE-2017-5378?
The vulnerability involves the sharing of hashed codes between pages in JavaScript, potentially exposing object addresses and content.
The Impact of CVE-2017-5378
The vulnerability affects Thunderbird versions older than 45.7, Firefox ESR versions earlier than 45.7, and Firefox versions prior to 51, leading to potential data leakage and pointer exposure.
Technical Details of CVE-2017-5378
Vulnerability Description
The sharing of hashed codes in JavaScript can result in pointer leaks and data leakage, exposing object addresses and content.
Affected Systems and Versions
- Thunderbird versions less than 45.7
- Firefox ESR versions less than 45.7
- Firefox versions less than 51
Exploitation Mechanism
The vulnerability allows attackers to access object addresses and content through shared hashed codes in JavaScript.
Mitigation and Prevention
Immediate Steps to Take
- Update Thunderbird, Firefox ESR, and Firefox to versions 45.7 and 51 respectively.
- Disable JavaScript if not required.
Long-Term Security Practices
- Regularly update software to the latest versions.
- Implement proper data handling practices to minimize data exposure risks.
Patching and Updates
Apply security patches provided by Mozilla to address the vulnerability.