The vulnerability of Thunderbird email client, as well as Firefox and Firefox ESR browsers, is related to improper handling of events triggered by window resize operations. This allows attackers to carry out spoofing attacks.

The vulnerability of the Thunderbird email client, as well as browsers Firefox and Firefox ESR, is related to improper handling of events related to the change in the size of the pop-up window. Exploiting this vulnerability allows a remote attacker to carry out spoofing attacks using a specially...