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RedHat: RHSA-2020-3832-01 Important: Firefox Memory Safety Issues

red hat
Calendar Grey September 24, 2020
Scroller Redhat
Essential Firefox patch released for Red Hat Enterprise Linux 8 tackling various memory stability concerns and safeguarding user information.
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 78.3.0 ESR.
Security Fix(es):
* Mozilla: Memory safety bugs fixed in Firefox 81 and Firefox ESR 78.3 (CVE-2020-15673)
* Mozilla: XSS when pasting attacker-controlled data into a contenteditable element (CVE-2020-15676)
* Mozilla: Download origin spoofing via redirect (CVE-2020-15677)
* Mozilla: When recursing through layers while scrolling, an iterator may have become invalid, resulting in a potential use-after-free scenario (CVE-2020-15678)
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 important firefox web browser memory safety

References

https://access.redhat.com/security/cve/CVE-2020-15673 https://access.redhat.com/security/cve/CVE-2020-15676 https://access.redhat.com/security/cve/CVE-2020-15677 https://access.redhat.com/security/cve/CVE-2020-15678 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: firefox-78.3.0-1.el8_2.src.rpm
aarch64: firefox-78.3.0-1.el8_2.aarch64.rpm firefox-debuginfo-78.3.0-1.el8_2.aarch64.rpm firefox-debugsource-78.3.0-1.el8_2.aarch64.rpm
ppc64le: firefox-78.3.0-1.el8_2.ppc64le.rpm firefox-debuginfo-78.3.0-1.el8_2.ppc64le.rpm firefox-debugsource-78.3.0-1.el8_2.ppc64le.rpm
s390x: firefox-78.3.0-1.el8_2.s390x.rpm firefox-debuginfo-78.3.0-1.el8_2.s390x.rpm firefox-debugsource-78.3.0-1.el8_2.s390x.rpm
x86_64: firefox-78.3.0-1.el8_2.x86_64.rpm firefox-debuginfo-78.3.0-1.el8_2.x86_64.rpm firefox-debugsource-78.3.0-1.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-2020:3832-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:3832
Issue date: 2020-09-24

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 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 security issue red hat important firefox web browser memory safety

Relevant Releases Architectures

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

Bugs Fixed

1881664 - CVE-2020-15677 Mozilla: Download origin spoofing via redirect

1881665 - CVE-2020-15676 Mozilla: XSS when pasting attacker-controlled data into a contenteditable element

1881666 - CVE-2020-15678 Mozilla: When recursing through layers while scrolling, an iterator may have become invalid, resulting in a potential use-after-free scenario

1881667 - CVE-2020-15673 Mozilla: Memory safety bugs fixed in Firefox 81 and Firefox ESR 78.3

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