Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2021.0316
firefox security update
28 January 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: firefox
Publisher: Red Hat
Operating System: Red Hat
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
Reduced Security -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2021-23964 CVE-2021-23960 CVE-2021-23954
CVE-2021-23953 CVE-2020-26976
Reference: ESB-2021.0291
ESB-2020.4446
Original Bulletin:
https://access.redhat.com/errata/RHSA-2021:0285
https://access.redhat.com/errata/RHSA-2021:0288
https://access.redhat.com/errata/RHSA-2021:0289
https://access.redhat.com/errata/RHSA-2021:0290
Comment: This bulletin contains four (4) Red Hat security advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
- -----BEGIN PGP SIGNED MESSAGE-----
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=====================================================================
Red Hat Security Advisory
Synopsis: Important: firefox security update
Advisory ID: RHSA-2021:0285-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0285
Issue date: 2021-01-27
CVE Names: CVE-2020-26976 CVE-2021-23953 CVE-2021-23954
CVE-2021-23960 CVE-2021-23964
=====================================================================
1. Summary:
An update for firefox is now available for Red Hat Enterprise Linux 8.1
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.
2. Relevant releases/architectures:
Red Hat Enterprise Linux AppStream EUS (v. 8.1) - aarch64, ppc64le, s390x, x86_64
3. 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.
4. 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.
5. Bugs fixed (https://bugzilla.redhat.com/):
1920646 - CVE-2021-23953 Mozilla: Cross-origin information leakage via redirected PDF requests
1920648 - CVE-2021-23954 Mozilla: Type confusion when using logical assignment operators in JavaScript switch statements
1920649 - CVE-2020-26976 Mozilla: HTTPS pages could have been intercepted by a registered service worker when they should not have been
1920650 - CVE-2021-23960 Mozilla: Use-after-poison for incorrectly redeclared JavaScript variables during GC
1920651 - CVE-2021-23964 Mozilla: Memory safety bugs fixed in Firefox 85 and Firefox ESR 78.7
6. Package List:
Red Hat Enterprise Linux AppStream EUS (v. 8.1):
Source:
firefox-78.7.0-2.el8_1.src.rpm
aarch64:
firefox-78.7.0-2.el8_1.aarch64.rpm
firefox-debuginfo-78.7.0-2.el8_1.aarch64.rpm
firefox-debugsource-78.7.0-2.el8_1.aarch64.rpm
ppc64le:
firefox-78.7.0-2.el8_1.ppc64le.rpm
firefox-debuginfo-78.7.0-2.el8_1.ppc64le.rpm
firefox-debugsource-78.7.0-2.el8_1.ppc64le.rpm
s390x:
firefox-78.7.0-2.el8_1.s390x.rpm
firefox-debuginfo-78.7.0-2.el8_1.s390x.rpm
firefox-debugsource-78.7.0-2.el8_1.s390x.rpm
x86_64:
firefox-78.7.0-2.el8_1.x86_64.rpm
firefox-debuginfo-78.7.0-2.el8_1.x86_64.rpm
firefox-debugsource-78.7.0-2.el8_1.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2020-26976
https://access.redhat.com/security/cve/CVE-2021-23953
https://access.redhat.com/security/cve/CVE-2021-23954
https://access.redhat.com/security/cve/CVE-2021-23960
https://access.redhat.com/security/cve/CVE-2021-23964
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2021 Red Hat, Inc.
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Hash: SHA256
=====================================================================
Red Hat Security Advisory
Synopsis: Important: firefox security update
Advisory ID: RHSA-2021:0288-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0288
Issue date: 2021-01-27
CVE Names: CVE-2020-26976 CVE-2021-23953 CVE-2021-23954
CVE-2021-23960 CVE-2021-23964
=====================================================================
1. Summary:
An update for firefox is now available for Red Hat Enterprise Linux 8.
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.
2. Relevant releases/architectures:
Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64
3. 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.
4. 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.
5. Bugs fixed (https://bugzilla.redhat.com/):
1920646 - CVE-2021-23953 Mozilla: Cross-origin information leakage via redirected PDF requests
1920648 - CVE-2021-23954 Mozilla: Type confusion when using logical assignment operators in JavaScript switch statements
1920649 - CVE-2020-26976 Mozilla: HTTPS pages could have been intercepted by a registered service worker when they should not have been
1920650 - CVE-2021-23960 Mozilla: Use-after-poison for incorrectly redeclared JavaScript variables during GC
1920651 - CVE-2021-23964 Mozilla: Memory safety bugs fixed in Firefox 85 and Firefox ESR 78.7
6. Package List:
Red Hat Enterprise Linux AppStream (v. 8):
Source:
firefox-78.7.0-2.el8_3.src.rpm
aarch64:
firefox-78.7.0-2.el8_3.aarch64.rpm
firefox-debuginfo-78.7.0-2.el8_3.aarch64.rpm
firefox-debugsource-78.7.0-2.el8_3.aarch64.rpm
ppc64le:
firefox-78.7.0-2.el8_3.ppc64le.rpm
firefox-debuginfo-78.7.0-2.el8_3.ppc64le.rpm
firefox-debugsource-78.7.0-2.el8_3.ppc64le.rpm
s390x:
firefox-78.7.0-2.el8_3.s390x.rpm
firefox-debuginfo-78.7.0-2.el8_3.s390x.rpm
firefox-debugsource-78.7.0-2.el8_3.s390x.rpm
x86_64:
firefox-78.7.0-2.el8_3.x86_64.rpm
firefox-debuginfo-78.7.0-2.el8_3.x86_64.rpm
firefox-debugsource-78.7.0-2.el8_3.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2020-26976
https://access.redhat.com/security/cve/CVE-2021-23953
https://access.redhat.com/security/cve/CVE-2021-23954
https://access.redhat.com/security/cve/CVE-2021-23960
https://access.redhat.com/security/cve/CVE-2021-23964
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2021 Red Hat, Inc.
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Hash: SHA256
=====================================================================
Red Hat Security Advisory
Synopsis: Important: firefox security update
Advisory ID: RHSA-2021:0289-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0289
Issue date: 2021-01-27
CVE Names: CVE-2020-26976 CVE-2021-23953 CVE-2021-23954
CVE-2021-23960 CVE-2021-23964
=====================================================================
1. Summary:
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.
2. Relevant releases/architectures:
Red Hat Enterprise Linux AppStream EUS (v. 8.2) - aarch64, ppc64le, s390x, x86_64
3. 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.
4. 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.
5. Bugs fixed (https://bugzilla.redhat.com/):
1920646 - CVE-2021-23953 Mozilla: Cross-origin information leakage via redirected PDF requests
1920648 - CVE-2021-23954 Mozilla: Type confusion when using logical assignment operators in JavaScript switch statements
1920649 - CVE-2020-26976 Mozilla: HTTPS pages could have been intercepted by a registered service worker when they should not have been
1920650 - CVE-2021-23960 Mozilla: Use-after-poison for incorrectly redeclared JavaScript variables during GC
1920651 - CVE-2021-23964 Mozilla: Memory safety bugs fixed in Firefox 85 and Firefox ESR 78.7
6. Package List:
Red Hat Enterprise Linux AppStream EUS (v. 8.2):
Source:
firefox-78.7.0-2.el8_2.src.rpm
aarch64:
firefox-78.7.0-2.el8_2.aarch64.rpm
firefox-debuginfo-78.7.0-2.el8_2.aarch64.rpm
firefox-debugsource-78.7.0-2.el8_2.aarch64.rpm
ppc64le:
firefox-78.7.0-2.el8_2.ppc64le.rpm
firefox-debuginfo-78.7.0-2.el8_2.ppc64le.rpm
firefox-debugsource-78.7.0-2.el8_2.ppc64le.rpm
s390x:
firefox-78.7.0-2.el8_2.s390x.rpm
firefox-debuginfo-78.7.0-2.el8_2.s390x.rpm
firefox-debugsource-78.7.0-2.el8_2.s390x.rpm
x86_64:
firefox-78.7.0-2.el8_2.x86_64.rpm
firefox-debuginfo-78.7.0-2.el8_2.x86_64.rpm
firefox-debugsource-78.7.0-2.el8_2.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2020-26976
https://access.redhat.com/security/cve/CVE-2021-23953
https://access.redhat.com/security/cve/CVE-2021-23954
https://access.redhat.com/security/cve/CVE-2021-23960
https://access.redhat.com/security/cve/CVE-2021-23964
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2021 Red Hat, Inc.
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Hash: SHA256
=====================================================================
Red Hat Security Advisory
Synopsis: Important: firefox security update
Advisory ID: RHSA-2021:0290-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0290
Issue date: 2021-01-27
CVE Names: CVE-2020-26976 CVE-2021-23953 CVE-2021-23954
CVE-2021-23960 CVE-2021-23964
=====================================================================
1. Summary:
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.
2. Relevant releases/architectures:
Red Hat Enterprise Linux Client (v. 7) - x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64
3. 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.
4. 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.
5. Bugs fixed (https://bugzilla.redhat.com/):
1920646 - CVE-2021-23953 Mozilla: Cross-origin information leakage via redirected PDF requests
1920648 - CVE-2021-23954 Mozilla: Type confusion when using logical assignment operators in JavaScript switch statements
1920649 - CVE-2020-26976 Mozilla: HTTPS pages could have been intercepted by a registered service worker when they should not have been
1920650 - CVE-2021-23960 Mozilla: Use-after-poison for incorrectly redeclared JavaScript variables during GC
1920651 - CVE-2021-23964 Mozilla: Memory safety bugs fixed in Firefox 85 and Firefox ESR 78.7
6. Package List:
Red Hat Enterprise Linux Client (v. 7):
Source:
firefox-78.7.0-2.el7_9.src.rpm
x86_64:
firefox-78.7.0-2.el7_9.x86_64.rpm
firefox-debuginfo-78.7.0-2.el7_9.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64:
firefox-78.7.0-2.el7_9.i686.rpm
Red Hat Enterprise Linux Server (v. 7):
Source:
firefox-78.7.0-2.el7_9.src.rpm
ppc64:
firefox-78.7.0-2.el7_9.ppc64.rpm
firefox-debuginfo-78.7.0-2.el7_9.ppc64.rpm
ppc64le:
firefox-78.7.0-2.el7_9.ppc64le.rpm
firefox-debuginfo-78.7.0-2.el7_9.ppc64le.rpm
s390x:
firefox-78.7.0-2.el7_9.s390x.rpm
firefox-debuginfo-78.7.0-2.el7_9.s390x.rpm
x86_64:
firefox-78.7.0-2.el7_9.x86_64.rpm
firefox-debuginfo-78.7.0-2.el7_9.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
x86_64:
firefox-78.7.0-2.el7_9.i686.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source:
firefox-78.7.0-2.el7_9.src.rpm
x86_64:
firefox-78.7.0-2.el7_9.x86_64.rpm
firefox-debuginfo-78.7.0-2.el7_9.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 7):
x86_64:
firefox-78.7.0-2.el7_9.i686.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2020-26976
https://access.redhat.com/security/cve/CVE-2021-23953
https://access.redhat.com/security/cve/CVE-2021-23954
https://access.redhat.com/security/cve/CVE-2021-23960
https://access.redhat.com/security/cve/CVE-2021-23964
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2021 Red Hat, Inc.
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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
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===========================================================================
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