CVE-2023-34414

The error page for sites with invalid TLS certificates was missing the

activation-delay Firefox uses to protect prompts and permission dialogs

from attacks that exploit human response time delays. If a malicious

page elicited user clicks in precise locations immediately before

navigating to a site with a certificate error and made the renderer

extremely busy at the same time, it could create a gap between when

the error page was loaded and when the display actually refreshed.

With the right timing the elicited clicks could land in that gap and

activate the button that overrides the certificate error for that site. This vulnerability affects Firefox ESR < 102.12, Firefox < 114, and Thunderbird < 102.12.