The vulnerability of Firefox and Firefox ESR browsers, related to the use of memory after it is freed, allows a hacker to trigger a service failure.

The vulnerability of Firefox and Firefox ESR browsers relates to the use of a pointer to a DOM element obtained through JavaScript the element is removed during use. Exploiting this vulnerability can allow an attacker acting locally to cause a service failure...

UBUNTU-CVE-2019-9790

A use-after-free vulnerability can occur when a raw pointer to a DOM element on a page is obtained using JavaScript and the element is then removed while still in use. This results in a potentially exploitable crash. This vulnerability affects Thunderbird 60.6, Firefox ESR 60.6, and Firefox 66...