1. Multiple vulnerabilities were found in Mozilla Thunderbird. Malicious users can exploit these vulnerabilities to cause denial of service, execute arbitrary code.

   Below is a complete list of vulnerabilities:

   1. Use-after-free vulnerability can be exploited remotely via specially designed HTML5 stream to cause denial of service.
   2. Inter-process Communication (IPC) vulnerability can be exploited remotely via attempt to communicate with the IPC object without validation to bypass security restrictions.
   3. Use-after-free vulnerability in the Libical libary in Thunderbird can be exploited remotely via a specially designed ICS calendar to cause a denial of service.
   4. Multiple memory corruption vulnerabilities can be exploited remotely to execute arbitrary code.

Mozilla Thunderbird earlier than 60.5

Update to the latest version
Download Mozilla Thunderbird

Mozilla Foundation Security Advisory 2019-03