Synopsis:          Important: thunderbird security update
Advisory ID:       SLSA-2021:5046-1
Issue Date:        2021-12-09
CVE Numbers:       CVE-2021-43536
                   CVE-2021-43537
                   CVE-2021-43538
                   CVE-2021-43539
                   CVE-2021-43541
                   CVE-2021-43542
                   CVE-2021-43543
                   CVE-2021-43545
                   CVE-2021-43546
                   CVE-2021-43528
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This update upgrades Thunderbird to version 91.4.0.

Security Fix(es):

* Mozilla: Memory safety bugs fixed in Firefox 95 and Firefox ESR 91.4

* Mozilla: URL leakage when navigating while executing asynchronous
function (CVE-2021-43536)

* Mozilla: Heap buffer overflow when using structured clone
(CVE-2021-43537)

* Mozilla: Missing fullscreen and pointer lock notification when
requesting  both (CVE-2021-43538)

* Mozilla: GC rooting failure when calling wasm instance methods
(CVE-2021-43539)

* Mozilla: External protocol handler parameters were unescaped
(CVE-2021-43541)

* Mozilla: XMLHttpRequest error codes could have leaked the existence of
an  external protocol handler (CVE-2021-43542)

* Mozilla: Bypass of CSP sandbox directive when embedding (CVE-2021-43543)

* Mozilla: JavaScript unexpectedly enabled for the composition area
(CVE-2021-43528)

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

* Mozilla: Cursor spoofing could overlay user interface when native cursor
is zoomed (CVE-2021-43546)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
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SL7
  x86_64
    thunderbird-91.4.0-3.el7_9.x86_64.rpm
    thunderbird-debuginfo-91.4.0-3.el7_9.x86_64.rpm

- Scientific Linux Development Team