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Red Hat Enterprise Linux 8: RHSA-2021-0655-01 Critical: Firefox Update

red hat
Calendar Grey February 24, 2021
Dist Redhat Esm H88
Important Firefox security patch now accessible for Red Hat Enterprise Linux 8. Update promptly to safeguard against identified vulnerabilities.
An update for firefox is now available for Red Hat Enterprise Linux 8

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.

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.

Topics%20covered

Topics Covered

security advisory security issue Red Hat update critical security fix Red Hat Enterprise Linux firefox web browser memory safety

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


Severity
critical
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:0655-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0655
Issue date: 2021-02-24

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.

Topics%20covered

Topics Covered

security advisory security issue Red Hat update critical security fix Red Hat Enterprise Linux firefox web browser memory safety

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

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