RedHat: RHSA-2021-5016:03 Important: firefox security update
Summary
Mozilla Firefox is an open-source web browser, designed for standards
compliance, performance, and portability.
This update upgrades Firefox to version 91.4.0 ESR.
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: 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
page(s) listed in the References section.
Summary
Solution
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
After installing the update, Firefox must be restarted for the changes to
take effect.
References
https://access.redhat.com/security/cve/CVE-2021-43536 https://access.redhat.com/security/cve/CVE-2021-43537 https://access.redhat.com/security/cve/CVE-2021-43538 https://access.redhat.com/security/cve/CVE-2021-43539 https://access.redhat.com/security/cve/CVE-2021-43541 https://access.redhat.com/security/cve/CVE-2021-43542 https://access.redhat.com/security/cve/CVE-2021-43543 https://access.redhat.com/security/cve/CVE-2021-43545 https://access.redhat.com/security/cve/CVE-2021-43546 https://access.redhat.com/security/updates/classification/#important
Package List
Red Hat Enterprise Linux AppStream EUS (v. 8.2):
Source:
firefox-91.4.0-1.el8_2.src.rpm
aarch64:
firefox-91.4.0-1.el8_2.aarch64.rpm
firefox-debuginfo-91.4.0-1.el8_2.aarch64.rpm
firefox-debugsource-91.4.0-1.el8_2.aarch64.rpm
ppc64le:
firefox-91.4.0-1.el8_2.ppc64le.rpm
firefox-debuginfo-91.4.0-1.el8_2.ppc64le.rpm
firefox-debugsource-91.4.0-1.el8_2.ppc64le.rpm
s390x:
firefox-91.4.0-1.el8_2.s390x.rpm
firefox-debuginfo-91.4.0-1.el8_2.s390x.rpm
firefox-debugsource-91.4.0-1.el8_2.s390x.rpm
x86_64:
firefox-91.4.0-1.el8_2.x86_64.rpm
firefox-debuginfo-91.4.0-1.el8_2.x86_64.rpm
firefox-debugsource-91.4.0-1.el8_2.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
Topic
An update for firefox is now available for Red Hat Enterprise Linux 8.2Extended Update Support.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux AppStream EUS (v. 8.2) - aarch64, ppc64le, s390x, x86_64
Bugs Fixed
2030105 - CVE-2021-43536 Mozilla: URL leakage when navigating while executing asynchronous function
2030106 - CVE-2021-43537 Mozilla: Heap buffer overflow when using structured clone
2030109 - CVE-2021-43538 Mozilla: Missing fullscreen and pointer lock notification when requesting both
2030110 - CVE-2021-43539 Mozilla: GC rooting failure when calling wasm instance methods
2030111 - CVE-2021-43541 Mozilla: External protocol handler parameters were unescaped
2030112 - CVE-2021-43542 Mozilla: XMLHttpRequest error codes could have leaked the existence of an external protocol handler
2030113 - CVE-2021-43543 Mozilla: Bypass of CSP sandbox directive when embedding
2030114 - CVE-2021-43545 Mozilla: Denial of Service when using the Location API in a loop
2030115 - CVE-2021-43546 Mozilla: Cursor spoofing could overlay user interface when native cursor is zoomed
2030116 - Mozilla: Memory safety bugs fixed in Firefox 95 and Firefox ESR 91.4
