Origin validation error in Mozilla Firefox and Firefox ESR - CVE-2021-38497

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Main Vulnerability Database Vulnerabilities #VU57066

Origin validation error in Mozilla Firefox and Firefox ESR - CVE-2021-38497

Published: October 5, 2021


Vulnerability identifier: #VU57066
CSH Severity: Medium
CVSS v4 BT: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-38497
CWE-ID: CWE-346
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to an error, which can cause a plain-text validation message to overlaid on another origin through the use of reportValidity() and window.open(). A remote attacker can perform a spoofing attack.


Affected software

Mozilla Firefox
Firefox ESR
SUSE CaaS Platform
SUSE Enterprise Storage
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for Power, little endian
CentOS
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for ARM 64
SUSE OpenStack Cloud Crowbar
SUSE OpenStack Cloud
HPE Helion Openstack
Anolis OS
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux Server - AUS
SUSE Linux Enterprise Debuginfo
SUSE Linux Enterprise Server
SUSE Linux Enterprise Server for SAP
SUSE Linux Enterprise Software Development Kit
SUSE Linux Enterprise High Performance Computing
SUSE Linux Enterprise Workstation Extension
SUSE Linux Enterprise Module for Desktop Applications
Ubuntu
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions
thunderbird (Red Hat package)
MozillaFirefox-translations-other
MozillaFirefox
MozillaFirefox-translations-common
MozillaFirefox-debuginfo
MozillaFirefox-debugsource
MozillaFirefox-devel
firefox (Red Hat package)
thunderbird (Ubuntu package)
MozillaThunderbird-translations-other
MozillaThunderbird-translations-common
MozillaThunderbird-debugsource
MozillaThunderbird-debuginfo
MozillaThunderbird
MozillaFirefox-branding-SLE
thunderbird
firefox
MozillaFirefox-branding-SLED
firefox (Ubuntu package)
Mozilla Thunderbird
IBM Cloud Pak for Multicloud Management Monitoring

How to mitigate CVE-2021-38497

Install updates from vendor's website.

Mozilla Firefox - update to 93.0
Firefox ESR - update to 91.2.0
Mozilla Thunderbird - update to 91.2.0
IBM Cloud Pak for Multicloud Management Monitoring - update to 2.3 Fix Pack 6
thunderbird (Red Hat package) - addressed in versions 91.2.0-1.el7_9, 91.2.0-1.el8_1, 91.2.0-1.el8_2, 91.2.0-1.el8_4
MozillaFirefox-translations-other - addressed in versions 91.2.0-3.155.2, 91.2.0-8.54.1, 91.2.0-78.143.1
MozillaFirefox - addressed in versions 91.2.0-3.155.2, 91.2.0-8.54.1, 91.2.0-78.143.1, 91.2.0-112.74.1
MozillaFirefox-translations-common - addressed in versions 91.2.0-3.155.2, 91.2.0-8.54.1, 91.2.0-78.143.1, 91.2.0-112.74.1
MozillaFirefox-debuginfo - addressed in versions 91.2.0-3.155.2, 91.2.0-8.54.1, 91.2.0-78.143.1, 91.2.0-112.74.1
MozillaFirefox-debugsource - addressed in versions 91.2.0-3.155.2, 91.2.0-8.54.1, 91.2.0-112.74.1
MozillaFirefox-devel - addressed in versions 91.2.0-3.155.2, 91.2.0-8.54.1, 91.2.0-112.74.1
firefox (Red Hat package) - addressed in versions 91.2.0-4.el7_9, 91.2.0-4.el8_1, 91.2.0-4.el8_2, 91.2.0-4.el8_4
thunderbird (Ubuntu package) - addressed in versions 1:91.2.1+build1-0ubuntu0.21.10.1, 1:91.5.0+build1-0ubuntu0.18.04.1, 1:91.5.0+build1-0ubuntu0.20.04.1
MozillaThunderbird-translations-other - update to 91.4.0-8.45.2
MozillaThunderbird-translations-common - update to 91.4.0-8.45.2
MozillaThunderbird-debugsource - update to 91.4.0-8.45.2
MozillaThunderbird-debuginfo - update to 91.4.0-8.45.2
MozillaThunderbird - update to 91.4.0-8.45.2
MozillaFirefox-branding-SLE - addressed in versions 91-4.19.1, 91-9.5.1
thunderbird - update to 91.6.0-1.0.1
firefox - update to 91.6.0-1.0.1
MozillaFirefox-branding-SLED - update to 91-21.18.1
firefox (Ubuntu package) - addressed in versions 93.0+build1-0ubuntu0.18.04.1, 93.0+build1-0ubuntu0.20.04.1, 93.0+build1-0ubuntu0.21.04.1

External References

Related Security Bulletins