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Red Hat Product Errata RHSA-2021:0289 - Security Advisory
Issued:
2021-01-27
Updated:
2021-01-27

RHSA-2021:0289 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Important: firefox security update

Type/Severity

Security Advisory: Important

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An update for firefox is now available for Red Hat Enterprise Linux 8.2 Extended Update Support.

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 78.7.0 ESR.

Security Fix(es):

  • Mozilla: Cross-origin information leakage via redirected PDF requests (CVE-2021-23953)
  • Mozilla: Type confusion when using logical assignment operators in JavaScript switch statements (CVE-2021-23954)
  • Mozilla: Memory safety bugs fixed in Firefox 85 and Firefox ESR 78.7 (CVE-2021-23964)
  • Mozilla: HTTPS pages could have been intercepted by a registered service worker when they should not have been (CVE-2020-26976)
  • Mozilla: Use-after-poison for incorrectly redeclared JavaScript variables during GC (CVE-2021-23960)

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 for x86_64 - Extended Update Support 8.2 x86_64
  • Red Hat Enterprise Linux Server - AUS 8.2 x86_64
  • Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.2 s390x
  • Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.2 ppc64le
  • Red Hat Enterprise Linux Server - TUS 8.2 x86_64
  • Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.2 aarch64
  • Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.2 ppc64le
  • Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.2 x86_64

Fixes

  • BZ - 1920646 - CVE-2021-23953 Mozilla: Cross-origin information leakage via redirected PDF requests
  • BZ - 1920648 - CVE-2021-23954 Mozilla: Type confusion when using logical assignment operators in JavaScript switch statements
  • BZ - 1920649 - CVE-2020-26976 Mozilla: HTTPS pages could have been intercepted by a registered service worker when they should not have been
  • BZ - 1920650 - CVE-2021-23960 Mozilla: Use-after-poison for incorrectly redeclared JavaScript variables during GC
  • BZ - 1920651 - CVE-2021-23964 Mozilla: Memory safety bugs fixed in Firefox 85 and Firefox ESR 78.7

CVEs

  • CVE-2020-26976
  • CVE-2021-23953
  • CVE-2021-23954
  • CVE-2021-23960
  • CVE-2021-23964

References

  • https://access.redhat.com/security/updates/classification/#important
Note: More recent versions of these packages may be available. Click a package name for more details.

Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.2

SRPM
firefox-78.7.0-2.el8_2.src.rpm SHA-256: 900156049aac2f0705ae656f787c800fbdd9e462edb904adfc615d9aa8b204a2
x86_64
firefox-78.7.0-2.el8_2.x86_64.rpm SHA-256: 0ce382ddd7c0d4678736d19434e4959e83b6dd13718ba801acd35fed90955163
firefox-debuginfo-78.7.0-2.el8_2.x86_64.rpm SHA-256: 3948a39000179808ad44b6ee6d2488d46f1a8c759c7e5e43660a9bccd1614b2f
firefox-debugsource-78.7.0-2.el8_2.x86_64.rpm SHA-256: ddb125fbe6a8c224adbc848e522bf0b24800da1f4a22b8799a2b95d1769c4a36

Red Hat Enterprise Linux Server - AUS 8.2

SRPM
firefox-78.7.0-2.el8_2.src.rpm SHA-256: 900156049aac2f0705ae656f787c800fbdd9e462edb904adfc615d9aa8b204a2
x86_64
firefox-78.7.0-2.el8_2.x86_64.rpm SHA-256: 0ce382ddd7c0d4678736d19434e4959e83b6dd13718ba801acd35fed90955163
firefox-debuginfo-78.7.0-2.el8_2.x86_64.rpm SHA-256: 3948a39000179808ad44b6ee6d2488d46f1a8c759c7e5e43660a9bccd1614b2f
firefox-debugsource-78.7.0-2.el8_2.x86_64.rpm SHA-256: ddb125fbe6a8c224adbc848e522bf0b24800da1f4a22b8799a2b95d1769c4a36

Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.2

SRPM
firefox-78.7.0-2.el8_2.src.rpm SHA-256: 900156049aac2f0705ae656f787c800fbdd9e462edb904adfc615d9aa8b204a2
s390x
firefox-78.7.0-2.el8_2.s390x.rpm SHA-256: 952f115d87453b7f459355066d1972df1bbd90435b46c145116fe1aae35afb68
firefox-debuginfo-78.7.0-2.el8_2.s390x.rpm SHA-256: 9c3f34302faaa0b909eaa4cd50cd7e6bbaacbd6a3df823bedd5661183b0017e1
firefox-debugsource-78.7.0-2.el8_2.s390x.rpm SHA-256: 50f8220b0d04a8336a4de7d7d70698aea9d2074c6913a5004853bee44c388e7b

Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.2

SRPM
firefox-78.7.0-2.el8_2.src.rpm SHA-256: 900156049aac2f0705ae656f787c800fbdd9e462edb904adfc615d9aa8b204a2
ppc64le
firefox-78.7.0-2.el8_2.ppc64le.rpm SHA-256: baa5ef9280c3b7bdb22e26568bab32fdf1ff430b47c01d127db4d63604ad809d
firefox-debuginfo-78.7.0-2.el8_2.ppc64le.rpm SHA-256: b186fb5053093b7286f8b04d6aa8d7d6ddc68e7355c7afd225e2bea69d75d565
firefox-debugsource-78.7.0-2.el8_2.ppc64le.rpm SHA-256: 4508864bc1a8c60b3b82a5ae52cf0e7a74fd31a8d5de03374044600fa78c8b02

Red Hat Enterprise Linux Server - TUS 8.2

SRPM
firefox-78.7.0-2.el8_2.src.rpm SHA-256: 900156049aac2f0705ae656f787c800fbdd9e462edb904adfc615d9aa8b204a2
x86_64
firefox-78.7.0-2.el8_2.x86_64.rpm SHA-256: 0ce382ddd7c0d4678736d19434e4959e83b6dd13718ba801acd35fed90955163
firefox-debuginfo-78.7.0-2.el8_2.x86_64.rpm SHA-256: 3948a39000179808ad44b6ee6d2488d46f1a8c759c7e5e43660a9bccd1614b2f
firefox-debugsource-78.7.0-2.el8_2.x86_64.rpm SHA-256: ddb125fbe6a8c224adbc848e522bf0b24800da1f4a22b8799a2b95d1769c4a36

Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.2

SRPM
firefox-78.7.0-2.el8_2.src.rpm SHA-256: 900156049aac2f0705ae656f787c800fbdd9e462edb904adfc615d9aa8b204a2
aarch64
firefox-78.7.0-2.el8_2.aarch64.rpm SHA-256: 2aec82e28c410260d0d1563b2ec63dd6f864b2b27c8c2709c4c0ba8b2c573ca0
firefox-debuginfo-78.7.0-2.el8_2.aarch64.rpm SHA-256: ea5cc17a223a7146aa58ba82803adbdfaf72ed7ab6a53ffa5f205aaca16c9170
firefox-debugsource-78.7.0-2.el8_2.aarch64.rpm SHA-256: f0e7c09057061336707df9690fb27c688b2bde05a7c84fefc27c9803be8bfbda

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.2

SRPM
firefox-78.7.0-2.el8_2.src.rpm SHA-256: 900156049aac2f0705ae656f787c800fbdd9e462edb904adfc615d9aa8b204a2
ppc64le
firefox-78.7.0-2.el8_2.ppc64le.rpm SHA-256: baa5ef9280c3b7bdb22e26568bab32fdf1ff430b47c01d127db4d63604ad809d
firefox-debuginfo-78.7.0-2.el8_2.ppc64le.rpm SHA-256: b186fb5053093b7286f8b04d6aa8d7d6ddc68e7355c7afd225e2bea69d75d565
firefox-debugsource-78.7.0-2.el8_2.ppc64le.rpm SHA-256: 4508864bc1a8c60b3b82a5ae52cf0e7a74fd31a8d5de03374044600fa78c8b02

Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.2

SRPM
firefox-78.7.0-2.el8_2.src.rpm SHA-256: 900156049aac2f0705ae656f787c800fbdd9e462edb904adfc615d9aa8b204a2
x86_64
firefox-78.7.0-2.el8_2.x86_64.rpm SHA-256: 0ce382ddd7c0d4678736d19434e4959e83b6dd13718ba801acd35fed90955163
firefox-debuginfo-78.7.0-2.el8_2.x86_64.rpm SHA-256: 3948a39000179808ad44b6ee6d2488d46f1a8c759c7e5e43660a9bccd1614b2f
firefox-debugsource-78.7.0-2.el8_2.x86_64.rpm SHA-256: ddb125fbe6a8c224adbc848e522bf0b24800da1f4a22b8799a2b95d1769c4a36

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

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