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Red Hat Enterprise Linux 8 RHSA-2020-1341-01 Critical: Firefox Security Fix

red hat
Calendar Grey April 7, 2020
Dist Redhat Esm H88
Essential security patch for Firefox on Red Hat Enterprise Linux 8 resolves various vulnerabilities, particularly targeting use-after-free errors.
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 68.6.1 ESR.
Security Fix(es):
* Mozilla: Use-after-free while running the nsDocShell destructor (CVE-2020-6819)
* Mozilla: Use-after-free when handling a ReadableStream (CVE-2020-6820)
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 Red Hat update critical software fix firefox security impact

References

https://access.redhat.com/security/cve/CVE-2020-6819 https://access.redhat.com/security/cve/CVE-2020-6820 https://access.redhat.com/security/updates/classification#critical

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: firefox-68.6.1-1.el8_1.src.rpm
aarch64: firefox-68.6.1-1.el8_1.aarch64.rpm firefox-debuginfo-68.6.1-1.el8_1.aarch64.rpm firefox-debugsource-68.6.1-1.el8_1.aarch64.rpm
ppc64le: firefox-68.6.1-1.el8_1.ppc64le.rpm firefox-debuginfo-68.6.1-1.el8_1.ppc64le.rpm firefox-debugsource-68.6.1-1.el8_1.ppc64le.rpm
s390x: firefox-68.6.1-1.el8_1.s390x.rpm firefox-debuginfo-68.6.1-1.el8_1.s390x.rpm firefox-debugsource-68.6.1-1.el8_1.s390x.rpm
x86_64: firefox-68.6.1-1.el8_1.x86_64.rpm firefox-debuginfo-68.6.1-1.el8_1.x86_64.rpm firefox-debugsource-68.6.1-1.el8_1.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-2020:1341-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:1341
Issue date: 2020-04-07

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 Red Hat update critical software fix firefox security impact

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64

Bugs Fixed

1820869 - CVE-2020-6819 Mozilla: Use-after-free while running the nsDocShell destructor

1820878 - CVE-2020-6820 Mozilla: Use-after-free when handling a ReadableStream

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