firefox-78.7.0-2.0.1.AXS4

Mozilla Firefox is an open-source web browser, designed for standards
compliance, performance, and portability.

This update upgrades Firefox to version 78.7.0 ESR.

Security Fix(es):

* Mozilla: Cross-origin information leakage via redirected PDF requests
(CVE-2021-23953)

* Mozilla: Type confusion when using logical assignment operators in
JavaScript switch statements (CVE-2021-23954)

* Mozilla: Memory safety bugs fixed in Firefox 85 and Firefox ESR 78.7
(CVE-2021-23964)

* Mozilla: HTTPS pages could have been intercepted by a registered service
worker when they should not have been (CVE-2020-26976)

* Mozilla: Use-after-poison for incorrectly redeclared JavaScript variables
during GC (CVE-2021-23960)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE page(s)
listed in the References section.

CVE-2020-26976
When a HTTPS pages was embedded in a HTTP page, and there was a service worker
registered for the former, the service worker could have intercepted the request
for the secure page despite the iframe not being a secure context due to the
(insecure) framing. This vulnerability affects Firefox < 84.
CVE-2021-23953
** RESERVED ** This candidate has been reserved by an organization or individual
that will use it when announcing a new security problem. When the candidate has
been publicized, the details for this candidate will be provided.
CVE-2021-23954
** RESERVED ** This candidate has been reserved by an organization or individual
that will use it when announcing a new security problem. When the candidate has
been publicized, the details for this candidate will be provided.
CVE-2021-23960
** RESERVED ** This candidate has been reserved by an organization or individual
that will use it when announcing a new security problem. When the candidate has
been publicized, the details for this candidate will be provided.
CVE-2021-23964
** RESERVED ** This candidate has been reserved by an organization or individual
that will use it when announcing a new security problem. When the candidate has
been publicized, the details for this candidate will be provided.