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RedHat: RHSA-2020-5100-01 Critical: Firefox Updates for RHEL 8

red hat
Calendar Grey November 12, 2020
Dist Redhat Esm H88
Important Mozilla Firefox security patch released for Red Hat Enterprise Linux 8 in response to major flaws.
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 78.4.1 ESR.
Security Fix(es):
* Mozilla: Write side effects in MCallGetProperty opcode not accounted for (CVE-2020-26950)
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 update critical mozilla firefox red hat enterprise linux browser update

References

https://access.redhat.com/security/cve/CVE-2020-26950 https://access.redhat.com/security/updates/classification/#critical

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: firefox-78.4.1-1.el8_3.src.rpm
aarch64: firefox-78.4.1-1.el8_3.aarch64.rpm firefox-debuginfo-78.4.1-1.el8_3.aarch64.rpm firefox-debugsource-78.4.1-1.el8_3.aarch64.rpm
ppc64le: firefox-78.4.1-1.el8_3.ppc64le.rpm firefox-debuginfo-78.4.1-1.el8_3.ppc64le.rpm firefox-debugsource-78.4.1-1.el8_3.ppc64le.rpm
s390x: firefox-78.4.1-1.el8_3.s390x.rpm firefox-debuginfo-78.4.1-1.el8_3.s390x.rpm firefox-debugsource-78.4.1-1.el8_3.s390x.rpm
x86_64: firefox-78.4.1-1.el8_3.x86_64.rpm firefox-debuginfo-78.4.1-1.el8_3.x86_64.rpm firefox-debugsource-78.4.1-1.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-2020:5100-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:5100
Issue date: 2020-11-12

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 update critical mozilla firefox red hat enterprise linux browser update

Relevant Releases Architectures

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

Bugs Fixed

1896306 - CVE-2020-26950 Mozilla: Write side effects in MCallGetProperty opcode not accounted for

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