Issued:
2020-09-24
Updated:
2020-09-24

RHSA-2020:3835 - Security Advisory

Synopsis

Important: firefox security update

Type/Severity

Security Advisory: Important

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 impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

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.

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.

Affected Products

  • Red Hat Enterprise Linux Server 6 x86_64
  • Red Hat Enterprise Linux Server 6 i386
  • Red Hat Enterprise Linux Workstation 6 x86_64
  • Red Hat Enterprise Linux Workstation 6 i386
  • Red Hat Enterprise Linux Desktop 6 x86_64
  • Red Hat Enterprise Linux Desktop 6 i386
  • Red Hat Enterprise Linux for IBM z Systems 6 s390x
  • Red Hat Enterprise Linux for Power, big endian 6 ppc64
  • Red Hat Enterprise Linux for Scientific Computing 6 x86_64

Fixes

  • BZ - 1881664 - CVE-2020-15677 Mozilla: Download origin spoofing via redirect
  • BZ - 1881665 - CVE-2020-15676 Mozilla: XSS when pasting attacker-controlled data into a contenteditable element
  • BZ - 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
  • BZ - 1881667 - CVE-2020-15673 Mozilla: Memory safety bugs fixed in Firefox 81 and Firefox ESR 78.3

CVEs

References

Red Hat Enterprise Linux Server 6

SRPM
firefox-78.3.0-1.el6_10.src.rpm SHA-256: 6f2a82e6ff93c50a074d03539ac9946fa9859c5af67436be232b4c2af491e118
x86_64
firefox-78.3.0-1.el6_10.i686.rpm SHA-256: e2bbc7124a9ff8b77708135a8186cc868c8ce33bc87a2a270a4af974095415f5
firefox-78.3.0-1.el6_10.x86_64.rpm SHA-256: b9c6df47ad6a404cea81c2424afa830ee14f4c92d3e310d973d8ca7225c00c4f
firefox-debuginfo-78.3.0-1.el6_10.x86_64.rpm SHA-256: fa522060f81a86fb669dd655c3a1653f65cc851c5bae04ade31289168f796152
i386
firefox-78.3.0-1.el6_10.i686.rpm SHA-256: e2bbc7124a9ff8b77708135a8186cc868c8ce33bc87a2a270a4af974095415f5

Red Hat Enterprise Linux Workstation 6

SRPM
firefox-78.3.0-1.el6_10.src.rpm SHA-256: 6f2a82e6ff93c50a074d03539ac9946fa9859c5af67436be232b4c2af491e118
x86_64
firefox-78.3.0-1.el6_10.i686.rpm SHA-256: e2bbc7124a9ff8b77708135a8186cc868c8ce33bc87a2a270a4af974095415f5
firefox-78.3.0-1.el6_10.x86_64.rpm SHA-256: b9c6df47ad6a404cea81c2424afa830ee14f4c92d3e310d973d8ca7225c00c4f
firefox-debuginfo-78.3.0-1.el6_10.x86_64.rpm SHA-256: fa522060f81a86fb669dd655c3a1653f65cc851c5bae04ade31289168f796152
i386
firefox-78.3.0-1.el6_10.i686.rpm SHA-256: e2bbc7124a9ff8b77708135a8186cc868c8ce33bc87a2a270a4af974095415f5

Red Hat Enterprise Linux Desktop 6

SRPM
firefox-78.3.0-1.el6_10.src.rpm SHA-256: 6f2a82e6ff93c50a074d03539ac9946fa9859c5af67436be232b4c2af491e118
x86_64
firefox-78.3.0-1.el6_10.i686.rpm SHA-256: e2bbc7124a9ff8b77708135a8186cc868c8ce33bc87a2a270a4af974095415f5
firefox-78.3.0-1.el6_10.x86_64.rpm SHA-256: b9c6df47ad6a404cea81c2424afa830ee14f4c92d3e310d973d8ca7225c00c4f
firefox-debuginfo-78.3.0-1.el6_10.x86_64.rpm SHA-256: fa522060f81a86fb669dd655c3a1653f65cc851c5bae04ade31289168f796152
i386
firefox-78.3.0-1.el6_10.i686.rpm SHA-256: e2bbc7124a9ff8b77708135a8186cc868c8ce33bc87a2a270a4af974095415f5

Red Hat Enterprise Linux for IBM z Systems 6

SRPM
firefox-78.3.0-1.el6_10.src.rpm SHA-256: 6f2a82e6ff93c50a074d03539ac9946fa9859c5af67436be232b4c2af491e118
s390x
firefox-78.3.0-1.el6_10.s390x.rpm SHA-256: 3618121771bbd337def2203bb07eeb92c848554c856dc0f69f2597f64d34552d
firefox-debuginfo-78.3.0-1.el6_10.s390x.rpm SHA-256: d7b81dc7e14c46e79c3fcb4119fb2f2a8eea38af33d65a102e7e45e8f0cf3c66

Red Hat Enterprise Linux for Power, big endian 6

SRPM
firefox-78.3.0-1.el6_10.src.rpm SHA-256: 6f2a82e6ff93c50a074d03539ac9946fa9859c5af67436be232b4c2af491e118
ppc64
firefox-78.3.0-1.el6_10.ppc64.rpm SHA-256: 7baa12cb5fcb905c1e8b5597aa25b9d62e8fee7c5110d93fa98690c1f20ec6cf
firefox-debuginfo-78.3.0-1.el6_10.ppc64.rpm SHA-256: d235619bdd1366c999d9d1052eed58561aeda033fb2680b95a33264190462858

Red Hat Enterprise Linux for Scientific Computing 6

SRPM
firefox-78.3.0-1.el6_10.src.rpm SHA-256: 6f2a82e6ff93c50a074d03539ac9946fa9859c5af67436be232b4c2af491e118
x86_64
firefox-78.3.0-1.el6_10.i686.rpm SHA-256: e2bbc7124a9ff8b77708135a8186cc868c8ce33bc87a2a270a4af974095415f5
firefox-78.3.0-1.el6_10.x86_64.rpm SHA-256: b9c6df47ad6a404cea81c2424afa830ee14f4c92d3e310d973d8ca7225c00c4f
firefox-debuginfo-78.3.0-1.el6_10.x86_64.rpm SHA-256: fa522060f81a86fb669dd655c3a1653f65cc851c5bae04ade31289168f796152

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.