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Red Hat Enterprise Linux 6: RHSA-2020-2036:01 Critical: Firefox Update

red hat
Calendar Grey May 6, 2020
Dist Redhat Esm H88
Important patch released for Firefox on Red Hat Enterprise Linux 6 to tackle vulnerabilities and enhance protection.
An update for firefox is now available for Red Hat Enterprise Linux 6

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 68.8.0 ESR.
Security Fix(es):
* Mozilla: Use-after-free during worker shutdown (CVE-2020-12387)
* Mozilla: Memory safety bugs fixed in Firefox 76 and Firefox ESR 68.8 (CVE-2020-12395)
* Mozilla: Buffer overflow in SCTP chunk input validation (CVE-2020-6831)
* Mozilla: Arbitrary local file access with 'Copy as cURL' (CVE-2020-12392)
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 Red Hat buffer overflow critical firefox memory safety

References

https://access.redhat.com/security/cve/CVE-2020-6831 https://access.redhat.com/security/cve/CVE-2020-12387 https://access.redhat.com/security/cve/CVE-2020-12392 https://access.redhat.com/security/cve/CVE-2020-12395 https://access.redhat.com/security/updates/classification#critical

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source: firefox-68.8.0-1.el6_10.src.rpm
i386: firefox-68.8.0-1.el6_10.i686.rpm firefox-debuginfo-68.8.0-1.el6_10.i686.rpm
x86_64: firefox-68.8.0-1.el6_10.x86_64.rpm firefox-debuginfo-68.8.0-1.el6_10.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
x86_64: firefox-68.8.0-1.el6_10.i686.rpm firefox-debuginfo-68.8.0-1.el6_10.i686.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source: firefox-68.8.0-1.el6_10.src.rpm
x86_64: firefox-68.8.0-1.el6_10.i686.rpm firefox-68.8.0-1.el6_10.x86_64.rpm firefox-debuginfo-68.8.0-1.el6_10.i686.rpm firefox-debuginfo-68.8.0-1.el6_10.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source: firefox-68.8.0-1.el6_10.src.rpm
i386: firefox-68.8.0-1.el6_10.i686.rpm firefox-debuginfo-68.8.0-1.el6_10.i686.rpm
ppc64: firefox-68.8.0-1.el6_10.ppc64.rpm firefox-debuginfo-68.8.0-1.el6_10.ppc64.rpm
s390x: firefox-68.8.0-1.el6_10.s390x.rpm firefox-debuginfo-68.8.0-1.el6_10.s390x.rpm
x86_64: firefox-68.8.0-1.el6_10.x86_64.rpm firefox-debuginfo-68.8.0-1.el6_10.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
x86_64: firefox-68.8.0-1.el6_10.i686.rpm firefox-debuginfo-68.8.0-1.el6_10.i686.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source: firefox-68.8.0-1.el6_10.src.rpm
i386:

Read the Full Advisory


Severity
critical
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:2036-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2036
Issue date: 2020-05-06

Topic

An update for firefox is now available for Red Hat Enterprise Linux 6.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 Red Hat buffer overflow critical firefox memory safety

Relevant Releases Architectures

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux Desktop Optional (v. 6) - x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - x86_64

Bugs Fixed

1831761 - CVE-2020-12387 Mozilla: Use-after-free during worker shutdown

1831763 - CVE-2020-6831 Mozilla: Buffer overflow in SCTP chunk input validation

1831764 - CVE-2020-12392 Mozilla: Arbitrary local file access with 'Copy as cURL'

1831765 - CVE-2020-12395 Mozilla: Memory safety bugs fixed in Firefox 76 and Firefox ESR 68.8

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