openSUSE Leap 15.3: 2021:3993-1 Important MozillaFirefox Buffer Overflow

This update for MozillaFirefox fixes the following issues:

Update to Extended Support Release 91.4.0 (bsc#1193485):

- CVE-2021-43536: URL leakage when navigating while executing asynchronous

function

- CVE-2021-43537: Heap buffer overflow when using structured clone

- CVE-2021-43538: Missing fullscreen and pointer lock notification when

requesting both

- CVE-2021-43539: GC rooting failure when calling wasm instance methods

- CVE-2021-43541: External protocol handler parameters were unescaped

- CVE-2021-43542: XMLHttpRequest error codes could have leaked the

existence of an external protocol handler

- CVE-2021-43543: Bypass of CSP sandbox directive when embedding

- CVE-2021-43545: Denial of Service when using the Location API in a loop

- CVE-2021-43546: Cursor spoofing could overlay user interface when native

cursor is zoomed

- Memory safety bugs fixed in Firefox 95 and Firefox ESR 91.4

- Removed x-scheme-handler/ftp from...