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Red Hat Enterprise Linux 8.2: RHSA-2021-3156-01 Important Memory Issue Fix

red hat
Calendar Grey August 16, 2021
Dist Redhat Esm H88
A recent Firefox update for Red Hat Enterprise Linux version 8.2 tackles several critical memory vulnerabilities and enhances overall security.
An update for firefox is now available for Red Hat Enterprise Linux 8.2 Extended Update Support

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 78.13.0 ESR.
Security Fix(es):
* Mozilla: Uninitialized memory in a canvas object could have led to memory corruption (CVE-2021-29980)
* Mozilla: Incorrect instruction reordering during JIT optimization (CVE-2021-29984)
* Mozilla: Race condition when resolving DNS names could have led to memory corruption (CVE-2021-29986)
* Mozilla: Memory corruption as a result of incorrect style treatment (CVE-2021-29988)
* Mozilla: Memory safety bugs fixed in Thunderbird 78.13 (CVE-2021-29989)
* Mozilla: Use-after-free media channels (CVE-2021-29985)
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 software update important firefox memory issue enterprise

References

https://access.redhat.com/security/cve/CVE-2021-29980 https://access.redhat.com/security/cve/CVE-2021-29984 https://access.redhat.com/security/cve/CVE-2021-29985 https://access.redhat.com/security/cve/CVE-2021-29986 https://access.redhat.com/security/cve/CVE-2021-29988 https://access.redhat.com/security/cve/CVE-2021-29989 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux AppStream EUS (v. 8.2):
Source: firefox-78.13.0-2.el8_2.src.rpm
aarch64: firefox-78.13.0-2.el8_2.aarch64.rpm firefox-debuginfo-78.13.0-2.el8_2.aarch64.rpm firefox-debugsource-78.13.0-2.el8_2.aarch64.rpm
ppc64le: firefox-78.13.0-2.el8_2.ppc64le.rpm firefox-debuginfo-78.13.0-2.el8_2.ppc64le.rpm firefox-debugsource-78.13.0-2.el8_2.ppc64le.rpm
s390x: firefox-78.13.0-2.el8_2.s390x.rpm firefox-debuginfo-78.13.0-2.el8_2.s390x.rpm firefox-debugsource-78.13.0-2.el8_2.s390x.rpm
x86_64: firefox-78.13.0-2.el8_2.x86_64.rpm firefox-debuginfo-78.13.0-2.el8_2.x86_64.rpm firefox-debugsource-78.13.0-2.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


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:3156-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:3156
Issue date: 2021-08-16

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.

Topics%20covered

Topics Covered

security advisory red hat software update important firefox memory issue enterprise

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream EUS (v. 8.2) - aarch64, ppc64le, s390x, x86_64

Bugs Fixed

1992417 - CVE-2021-29986 Mozilla: Race condition when resolving DNS names could have led to memory corruption

1992419 - CVE-2021-29988 Mozilla: Memory corruption as a result of incorrect style treatment

1992420 - CVE-2021-29984 Mozilla: Incorrect instruction reordering during JIT optimization

1992421 - CVE-2021-29980 Mozilla: Uninitialized memory in a canvas object could have led to memory corruption

1992422 - CVE-2021-29985 Mozilla: Use-after-free media channels

1992423 - CVE-2021-29989 Mozilla: Memory safety bugs fixed in Thunderbird 78.13

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