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Red Hat Product Errata RHSA-2021:3756 - Security Advisory
Issued:
2021-10-11
Updated:
2021-10-11

RHSA-2021:3756 - 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 91.2.0 ESR.

Security Fix(es):

  • Mozilla: Use-after-free in MessageTask (CVE-2021-38496)
  • Mozilla: Memory safety bugs fixed in Firefox 93, Firefox ESR 78.15, and Firefox ESR 91.2 (CVE-2021-38500)
  • Mozilla: Memory safety bugs fixed in Firefox 93 and Firefox ESR 91.2 (CVE-2021-38501)
  • rust-crossbeam-deque: race condition may lead to double free (CVE-2021-32810)
  • Mozilla: Validation message could have been overlaid on another origin (CVE-2021-38497)
  • Mozilla: Use-after-free of nsLanguageAtomService object (CVE-2021-38498)

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 Server for x86_64 - Update Services for SAP Solutions 8.2 x86_64

Fixes

  • BZ - 1990342 - CVE-2021-32810 rust-crossbeam-deque: race condition may lead to double free
  • BZ - 2011097 - CVE-2021-38496 Mozilla: Use-after-free in MessageTask
  • BZ - 2011098 - CVE-2021-38497 Mozilla: Validation message could have been overlaid on another origin
  • BZ - 2011099 - CVE-2021-38498 Mozilla: Use-after-free of nsLanguageAtomService object
  • BZ - 2011100 - CVE-2021-38500 Mozilla: Memory safety bugs fixed in Firefox 93, Firefox ESR 78.15, and Firefox ESR 91.2
  • BZ - 2011101 - CVE-2021-38501 Mozilla: Memory safety bugs fixed in Firefox 93 and Firefox ESR 91.2

CVEs

  • CVE-2021-32810
  • CVE-2021-38496
  • CVE-2021-38497
  • CVE-2021-38498
  • CVE-2021-38500
  • CVE-2021-38501

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-91.2.0-4.el8_2.src.rpm SHA-256: 67da8186575abbed829f0053918eb538072b7f76c26a76096e7b57e909e0fa6a
x86_64
firefox-91.2.0-4.el8_2.x86_64.rpm SHA-256: 3e7add8dccc683761cdb1ec327d8190941bea03b19d5587246e6f8b6b731f7a6
firefox-debuginfo-91.2.0-4.el8_2.x86_64.rpm SHA-256: cad4a5addc1af44f197d207bfedbb5d3f1e62fa76953a94936c1399e2ef2054f
firefox-debugsource-91.2.0-4.el8_2.x86_64.rpm SHA-256: 666cf7c7c00360944bb8962ee8c1575c32df0196d6304f7f81abca697a37ebd6

Red Hat Enterprise Linux Server - AUS 8.2

SRPM
firefox-91.2.0-4.el8_2.src.rpm SHA-256: 67da8186575abbed829f0053918eb538072b7f76c26a76096e7b57e909e0fa6a
x86_64
firefox-91.2.0-4.el8_2.x86_64.rpm SHA-256: 3e7add8dccc683761cdb1ec327d8190941bea03b19d5587246e6f8b6b731f7a6
firefox-debuginfo-91.2.0-4.el8_2.x86_64.rpm SHA-256: cad4a5addc1af44f197d207bfedbb5d3f1e62fa76953a94936c1399e2ef2054f
firefox-debugsource-91.2.0-4.el8_2.x86_64.rpm SHA-256: 666cf7c7c00360944bb8962ee8c1575c32df0196d6304f7f81abca697a37ebd6

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

SRPM
firefox-91.2.0-4.el8_2.src.rpm SHA-256: 67da8186575abbed829f0053918eb538072b7f76c26a76096e7b57e909e0fa6a
s390x
firefox-91.2.0-4.el8_2.s390x.rpm SHA-256: e3a30a979bda99f5c3ce65b929b143f646881b521c07aae50f8a424731e032e0
firefox-debuginfo-91.2.0-4.el8_2.s390x.rpm SHA-256: 41890770b470555696196155d51a4ce4bdcc4d06872a0a23e4cfb13ac2280ecd
firefox-debugsource-91.2.0-4.el8_2.s390x.rpm SHA-256: b153617e0da130c130b6fa523317d85f33ed74bfb210b50bb1c73852007a701c

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

SRPM
firefox-91.2.0-4.el8_2.src.rpm SHA-256: 67da8186575abbed829f0053918eb538072b7f76c26a76096e7b57e909e0fa6a
ppc64le
firefox-91.2.0-4.el8_2.ppc64le.rpm SHA-256: a33616dc4b9ceabd7341938f7622bd48d86a76b2eb77b88d638ae2f7d1531899
firefox-debuginfo-91.2.0-4.el8_2.ppc64le.rpm SHA-256: b3beb4a7231358418e7672ffbbbf75c8b9edb704e45f1e81c2443511b2ce14c5
firefox-debugsource-91.2.0-4.el8_2.ppc64le.rpm SHA-256: 0e6f6b9bef279d4c6ccb7947c2d3490ff4e94cfb956d0d9b4ab0c488849eaf3c

Red Hat Enterprise Linux Server - TUS 8.2

SRPM
firefox-91.2.0-4.el8_2.src.rpm SHA-256: 67da8186575abbed829f0053918eb538072b7f76c26a76096e7b57e909e0fa6a
x86_64
firefox-91.2.0-4.el8_2.x86_64.rpm SHA-256: 3e7add8dccc683761cdb1ec327d8190941bea03b19d5587246e6f8b6b731f7a6
firefox-debuginfo-91.2.0-4.el8_2.x86_64.rpm SHA-256: cad4a5addc1af44f197d207bfedbb5d3f1e62fa76953a94936c1399e2ef2054f
firefox-debugsource-91.2.0-4.el8_2.x86_64.rpm SHA-256: 666cf7c7c00360944bb8962ee8c1575c32df0196d6304f7f81abca697a37ebd6

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

SRPM
firefox-91.2.0-4.el8_2.src.rpm SHA-256: 67da8186575abbed829f0053918eb538072b7f76c26a76096e7b57e909e0fa6a
aarch64
firefox-91.2.0-4.el8_2.aarch64.rpm SHA-256: d793bba0be6f0d3fb19125c459af9cee34b2ae2e7d7b22cff9e1298383ed0472
firefox-debuginfo-91.2.0-4.el8_2.aarch64.rpm SHA-256: b00d4c720da84eac1f0baee16ce2ecf169a38a1dbae804e9ab306b6f200dcadd
firefox-debugsource-91.2.0-4.el8_2.aarch64.rpm SHA-256: 2f199835b6fcfdae7c5d4f9c58d43e29e0866bc4a86feb24f857b92a742ee1a1

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

SRPM
firefox-91.2.0-4.el8_2.src.rpm SHA-256: 67da8186575abbed829f0053918eb538072b7f76c26a76096e7b57e909e0fa6a
ppc64le
firefox-91.2.0-4.el8_2.ppc64le.rpm SHA-256: a33616dc4b9ceabd7341938f7622bd48d86a76b2eb77b88d638ae2f7d1531899
firefox-debuginfo-91.2.0-4.el8_2.ppc64le.rpm SHA-256: b3beb4a7231358418e7672ffbbbf75c8b9edb704e45f1e81c2443511b2ce14c5
firefox-debugsource-91.2.0-4.el8_2.ppc64le.rpm SHA-256: 0e6f6b9bef279d4c6ccb7947c2d3490ff4e94cfb956d0d9b4ab0c488849eaf3c

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

SRPM
firefox-91.2.0-4.el8_2.src.rpm SHA-256: 67da8186575abbed829f0053918eb538072b7f76c26a76096e7b57e909e0fa6a
x86_64
firefox-91.2.0-4.el8_2.x86_64.rpm SHA-256: 3e7add8dccc683761cdb1ec327d8190941bea03b19d5587246e6f8b6b731f7a6
firefox-debuginfo-91.2.0-4.el8_2.x86_64.rpm SHA-256: cad4a5addc1af44f197d207bfedbb5d3f1e62fa76953a94936c1399e2ef2054f
firefox-debugsource-91.2.0-4.el8_2.x86_64.rpm SHA-256: 666cf7c7c00360944bb8962ee8c1575c32df0196d6304f7f81abca697a37ebd6

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

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