Mozilla · Firefox Esr · CVE-2017-5390
**Name of the Vulnerable Software and Affected Versions**
Thunderbird versions prior to 45.7
Firefox ESR versions prior to 45.7
Firefox versions prior to 51
**Description**
The JSON viewer in the Developer Tools uses insecure methods to create a communication channel, potentially allowing for privilege escalation.
**Recommendations**
For Thunderbird versions prior to 45.7, update to version 45.7 or later.
For Firefox ESR versions prior to 45.7, update to version 45.7 or later.
For Firefox versions prior to 51, update to version 51 or later.