RedHat: RHSA-2021-0655:01 Critical: 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 78.8.0 ESR.
Security Fix(es):
* Mozilla: Content Security Policy violation report could have contained
the destination of a redirect (CVE-2021-23968)
* Mozilla: Content Security Policy violation report could have contained
the destination of a redirect (CVE-2021-23969)
* Mozilla: Memory safety bugs fixed in Firefox 86 and Firefox ESR 78.8
(CVE-2021-23978)
* Mozilla: MediaError message property could have leaked information about
cross-origin resources (CVE-2021-23973)
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-2021-23968 https://access.redhat.com/security/cve/CVE-2021-23969 https://access.redhat.com/security/cve/CVE-2021-23973 https://access.redhat.com/security/cve/CVE-2021-23978 https://access.redhat.com/security/updates/classification/#critical
Package List
Red Hat Enterprise Linux AppStream (v. 8):
Source:
firefox-78.8.0-1.el8_3.src.rpm
aarch64:
firefox-78.8.0-1.el8_3.aarch64.rpm
firefox-debuginfo-78.8.0-1.el8_3.aarch64.rpm
firefox-debugsource-78.8.0-1.el8_3.aarch64.rpm
ppc64le:
firefox-78.8.0-1.el8_3.ppc64le.rpm
firefox-debuginfo-78.8.0-1.el8_3.ppc64le.rpm
firefox-debugsource-78.8.0-1.el8_3.ppc64le.rpm
s390x:
firefox-78.8.0-1.el8_3.s390x.rpm
firefox-debuginfo-78.8.0-1.el8_3.s390x.rpm
firefox-debugsource-78.8.0-1.el8_3.s390x.rpm
x86_64:
firefox-78.8.0-1.el8_3.x86_64.rpm
firefox-debuginfo-78.8.0-1.el8_3.x86_64.rpm
firefox-debugsource-78.8.0-1.el8_3.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.Red Hat Product Security has rated this update as having a security impactof Critical. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64
Bugs Fixed
1932109 - CVE-2021-23969 Mozilla: Content Security Policy violation report could have contained the destination of a redirect
1932110 - CVE-2021-23968 Mozilla: Content Security Policy violation report could have contained the destination of a redirect
1932111 - CVE-2021-23973 Mozilla: MediaError message property could have leaked information about cross-origin resources
1932112 - CVE-2021-23978 Mozilla: Memory safety bugs fixed in Firefox 86 and Firefox ESR 78.8
