Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2021.3845
firefox security update
11 November 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
Provide Misleading Information -- Remote with User Interaction
Access Confidential Data -- Remote with User Interaction
Reduced Security -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2021-38509 CVE-2021-38508 CVE-2021-38507
CVE-2021-38506 CVE-2021-38504 CVE-2021-38503
Reference: ESB-2021.3694
ESB-2021.3684
ESB-2021.3662
Original Bulletin:
https://access.redhat.com/errata/RHSA-2021:4605
https://access.redhat.com/errata/RHSA-2021:4607
Comment: This bulletin contains two (2) Red Hat security advisories.
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=====================================================================
Red Hat Security Advisory
Synopsis: Important: firefox security update
Advisory ID: RHSA-2021:4605-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:4605
Issue date: 2021-11-10
CVE Names: CVE-2021-38503 CVE-2021-38504 CVE-2021-38506
CVE-2021-38507 CVE-2021-38508 CVE-2021-38509
=====================================================================
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 91.3.0 ESR.
Security Fix(es):
* Mozilla: Use-after-free in HTTP2 Session object
* Mozilla: Memory safety bugs fixed in Firefox 94 and Firefox ESR 91.3
* Mozilla: iframe sandbox rules did not apply to XSLT stylesheets
(CVE-2021-38503)
* Mozilla: Use-after-free in file picker dialog (CVE-2021-38504)
* Mozilla: Firefox could be coaxed into going into fullscreen mode without
notification or warning (CVE-2021-38506)
* Mozilla: Opportunistic Encryption in HTTP2 could be used to bypass the
Same-Origin-Policy on services hosted on other ports (CVE-2021-38507)
* Mozilla: Permission Prompt could be overlaid, resulting in user confusion
and potential spoofing (CVE-2021-38508)
* Mozilla: Javascript alert box could have been spoofed onto an arbitrary
domain (CVE-2021-38509)
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/):
2019621 - CVE-2021-38503 Mozilla: iframe sandbox rules did not apply to XSLT stylesheets
2019622 - CVE-2021-38504 Mozilla: Use-after-free in file picker dialog
2019624 - CVE-2021-38506 Mozilla: Firefox could be coaxed into going into fullscreen mode without notification or warning
2019625 - CVE-2021-38507 Mozilla: Opportunistic Encryption in HTTP2 could be used to bypass the Same-Origin-Policy on services hosted on other ports
2019626 - Mozilla: Use-after-free in HTTP2 Session object
2019627 - CVE-2021-38508 Mozilla: Permission Prompt could be overlaid, resulting in user confusion and potential spoofing
2019628 - CVE-2021-38509 Mozilla: Javascript alert box could have been spoofed onto an arbitrary domain
2019630 - Mozilla: Memory safety bugs fixed in Firefox 94 and Firefox ESR 91.3
6. Package List:
Red Hat Enterprise Linux AppStream EUS (v. 8.2):
Source:
firefox-91.3.0-1.el8_2.src.rpm
aarch64:
firefox-91.3.0-1.el8_2.aarch64.rpm
firefox-debuginfo-91.3.0-1.el8_2.aarch64.rpm
firefox-debugsource-91.3.0-1.el8_2.aarch64.rpm
ppc64le:
firefox-91.3.0-1.el8_2.ppc64le.rpm
firefox-debuginfo-91.3.0-1.el8_2.ppc64le.rpm
firefox-debugsource-91.3.0-1.el8_2.ppc64le.rpm
s390x:
firefox-91.3.0-1.el8_2.s390x.rpm
firefox-debuginfo-91.3.0-1.el8_2.s390x.rpm
firefox-debugsource-91.3.0-1.el8_2.s390x.rpm
x86_64:
firefox-91.3.0-1.el8_2.x86_64.rpm
firefox-debuginfo-91.3.0-1.el8_2.x86_64.rpm
firefox-debugsource-91.3.0-1.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-2021-38503
https://access.redhat.com/security/cve/CVE-2021-38504
https://access.redhat.com/security/cve/CVE-2021-38506
https://access.redhat.com/security/cve/CVE-2021-38507
https://access.redhat.com/security/cve/CVE-2021-38508
https://access.redhat.com/security/cve/CVE-2021-38509
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-2021:4607-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:4607
Issue date: 2021-11-10
CVE Names: CVE-2021-38503 CVE-2021-38504 CVE-2021-38506
CVE-2021-38507 CVE-2021-38508 CVE-2021-38509
=====================================================================
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 91.3.0 ESR.
Security Fix(es):
* Mozilla: Use-after-free in HTTP2 Session object
* Mozilla: Memory safety bugs fixed in Firefox 94 and Firefox ESR 91.3
* Mozilla: iframe sandbox rules did not apply to XSLT stylesheets
(CVE-2021-38503)
* Mozilla: Use-after-free in file picker dialog (CVE-2021-38504)
* Mozilla: Firefox could be coaxed into going into fullscreen mode without
notification or warning (CVE-2021-38506)
* Mozilla: Opportunistic Encryption in HTTP2 could be used to bypass the
Same-Origin-Policy on services hosted on other ports (CVE-2021-38507)
* Mozilla: Permission Prompt could be overlaid, resulting in user confusion
and potential spoofing (CVE-2021-38508)
* Mozilla: Javascript alert box could have been spoofed onto an arbitrary
domain (CVE-2021-38509)
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/):
2019621 - CVE-2021-38503 Mozilla: iframe sandbox rules did not apply to XSLT stylesheets
2019622 - CVE-2021-38504 Mozilla: Use-after-free in file picker dialog
2019624 - CVE-2021-38506 Mozilla: Firefox could be coaxed into going into fullscreen mode without notification or warning
2019625 - CVE-2021-38507 Mozilla: Opportunistic Encryption in HTTP2 could be used to bypass the Same-Origin-Policy on services hosted on other ports
2019626 - Mozilla: Use-after-free in HTTP2 Session object
2019627 - CVE-2021-38508 Mozilla: Permission Prompt could be overlaid, resulting in user confusion and potential spoofing
2019628 - CVE-2021-38509 Mozilla: Javascript alert box could have been spoofed onto an arbitrary domain
2019630 - Mozilla: Memory safety bugs fixed in Firefox 94 and Firefox ESR 91.3
6. Package List:
Red Hat Enterprise Linux AppStream EUS (v. 8.1):
Source:
firefox-91.3.0-1.el8_1.src.rpm
aarch64:
firefox-91.3.0-1.el8_1.aarch64.rpm
firefox-debuginfo-91.3.0-1.el8_1.aarch64.rpm
firefox-debugsource-91.3.0-1.el8_1.aarch64.rpm
ppc64le:
firefox-91.3.0-1.el8_1.ppc64le.rpm
firefox-debuginfo-91.3.0-1.el8_1.ppc64le.rpm
firefox-debugsource-91.3.0-1.el8_1.ppc64le.rpm
s390x:
firefox-91.3.0-1.el8_1.s390x.rpm
firefox-debuginfo-91.3.0-1.el8_1.s390x.rpm
firefox-debugsource-91.3.0-1.el8_1.s390x.rpm
x86_64:
firefox-91.3.0-1.el8_1.x86_64.rpm
firefox-debuginfo-91.3.0-1.el8_1.x86_64.rpm
firefox-debugsource-91.3.0-1.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-2021-38503
https://access.redhat.com/security/cve/CVE-2021-38504
https://access.redhat.com/security/cve/CVE-2021-38506
https://access.redhat.com/security/cve/CVE-2021-38507
https://access.redhat.com/security/cve/CVE-2021-38508
https://access.redhat.com/security/cve/CVE-2021-38509
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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