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Red Hat Product Errata RHSA-2021:1363 - Security Advisory
Issued:
2021-04-26
Updated:
2021-04-26

RHSA-2021:1363 - 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 7.

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 78.10.0 ESR.

Security Fix(es):

  • Mozilla: Out of bound write due to lazy initialization (CVE-2021-23994)
  • Mozilla: Use-after-free in Responsive Design Mode (CVE-2021-23995)
  • Mozilla: More internal network hosts could have been probed by a malicious webpage (CVE-2021-23961)
  • Mozilla: Secure Lock icon could have been spoofed (CVE-2021-23998)
  • Mozilla: Blob URLs may have been granted additional privileges (CVE-2021-23999)
  • Mozilla: Arbitrary FTP command execution on FTP servers using an encoded URL (CVE-2021-24002)
  • Mozilla: Incorrect size computation in WebAssembly JIT could lead to null-reads (CVE-2021-29945)
  • Mozilla: Port blocking could be bypassed (CVE-2021-29946)

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 7 x86_64
  • Red Hat Enterprise Linux Workstation 7 x86_64
  • Red Hat Enterprise Linux Desktop 7 x86_64
  • Red Hat Enterprise Linux for IBM z Systems 7 s390x
  • Red Hat Enterprise Linux for Power, big endian 7 ppc64
  • Red Hat Enterprise Linux for Power, little endian 7 ppc64le

Fixes

  • BZ - 1951364 - CVE-2021-23994 Mozilla: Out of bound write due to lazy initialization
  • BZ - 1951365 - CVE-2021-23995 Mozilla: Use-after-free in Responsive Design Mode
  • BZ - 1951366 - CVE-2021-23998 Mozilla: Secure Lock icon could have been spoofed
  • BZ - 1951367 - CVE-2021-23961 Mozilla: More internal network hosts could have been probed by a malicious webpage
  • BZ - 1951368 - CVE-2021-23999 Mozilla: Blob URLs may have been granted additional privileges
  • BZ - 1951369 - CVE-2021-24002 Mozilla: Arbitrary FTP command execution on FTP servers using an encoded URL
  • BZ - 1951370 - CVE-2021-29945 Mozilla: Incorrect size computation in WebAssembly JIT could lead to null-reads
  • BZ - 1951371 - CVE-2021-29946 Mozilla: Port blocking could be bypassed

CVEs

  • CVE-2021-23961
  • CVE-2021-23994
  • CVE-2021-23995
  • CVE-2021-23998
  • CVE-2021-23999
  • CVE-2021-24002
  • CVE-2021-29945
  • CVE-2021-29946

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 Server 7

SRPM
firefox-78.10.0-1.el7_9.src.rpm SHA-256: dd77ff59b9682c3232ae5879996aa75fa508be25f2328c15659c419bb774d074
x86_64
firefox-78.10.0-1.el7_9.i686.rpm SHA-256: 188bd090ef94e8b4c65a74b6c2cb3d485d19f8b94f98485e01570d5cb4f9c6d1
firefox-78.10.0-1.el7_9.x86_64.rpm SHA-256: 2f8de4abe487c5b5c614bbbd8b2966634888b1dba5f4f788a066ba5b20a47f9f
firefox-debuginfo-78.10.0-1.el7_9.x86_64.rpm SHA-256: ff5478d548d77613027645b02bc6c3b91b25ecf059326c9147b12e6cc3976f30

Red Hat Enterprise Linux Workstation 7

SRPM
firefox-78.10.0-1.el7_9.src.rpm SHA-256: dd77ff59b9682c3232ae5879996aa75fa508be25f2328c15659c419bb774d074
x86_64
firefox-78.10.0-1.el7_9.i686.rpm SHA-256: 188bd090ef94e8b4c65a74b6c2cb3d485d19f8b94f98485e01570d5cb4f9c6d1
firefox-78.10.0-1.el7_9.x86_64.rpm SHA-256: 2f8de4abe487c5b5c614bbbd8b2966634888b1dba5f4f788a066ba5b20a47f9f
firefox-debuginfo-78.10.0-1.el7_9.x86_64.rpm SHA-256: ff5478d548d77613027645b02bc6c3b91b25ecf059326c9147b12e6cc3976f30

Red Hat Enterprise Linux Desktop 7

SRPM
firefox-78.10.0-1.el7_9.src.rpm SHA-256: dd77ff59b9682c3232ae5879996aa75fa508be25f2328c15659c419bb774d074
x86_64
firefox-78.10.0-1.el7_9.i686.rpm SHA-256: 188bd090ef94e8b4c65a74b6c2cb3d485d19f8b94f98485e01570d5cb4f9c6d1
firefox-78.10.0-1.el7_9.x86_64.rpm SHA-256: 2f8de4abe487c5b5c614bbbd8b2966634888b1dba5f4f788a066ba5b20a47f9f
firefox-debuginfo-78.10.0-1.el7_9.x86_64.rpm SHA-256: ff5478d548d77613027645b02bc6c3b91b25ecf059326c9147b12e6cc3976f30

Red Hat Enterprise Linux for IBM z Systems 7

SRPM
firefox-78.10.0-1.el7_9.src.rpm SHA-256: dd77ff59b9682c3232ae5879996aa75fa508be25f2328c15659c419bb774d074
s390x
firefox-78.10.0-1.el7_9.s390x.rpm SHA-256: b9a89d8e2bb73b4f51af3966c911443f228b11ec206bec721e806bc11d0a90fe
firefox-debuginfo-78.10.0-1.el7_9.s390x.rpm SHA-256: c9ab9fd61d4d8e4168a479447adb1fe386b3a93fc051d56768a5cd617c4b5f3b

Red Hat Enterprise Linux for Power, big endian 7

SRPM
firefox-78.10.0-1.el7_9.src.rpm SHA-256: dd77ff59b9682c3232ae5879996aa75fa508be25f2328c15659c419bb774d074
ppc64
firefox-78.10.0-1.el7_9.ppc64.rpm SHA-256: 7b6f966d6c68b7b5aaf956b9cccfaae4f2cd6a273003d466bd5134fa8466f205
firefox-debuginfo-78.10.0-1.el7_9.ppc64.rpm SHA-256: 443b19751ccdebb36337ba46be8de638fbd63ddcc7be2a18ba236d0219aab05f

Red Hat Enterprise Linux for Power, little endian 7

SRPM
firefox-78.10.0-1.el7_9.src.rpm SHA-256: dd77ff59b9682c3232ae5879996aa75fa508be25f2328c15659c419bb774d074
ppc64le
firefox-78.10.0-1.el7_9.ppc64le.rpm SHA-256: 680a9658d2ce93cd1631ad46adf937a555b280e93e45ec8d0484e5071ffaa947
firefox-debuginfo-78.10.0-1.el7_9.ppc64le.rpm SHA-256: b47b18ba4e5463dd1c3d3959ed06d398acedd1c7e4301de0f56076e5bed9a33f

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

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