Bug 2019624 (CVE-2021-38506)

Summary:	CVE-2021-38506 Mozilla: Firefox could be coaxed into going into fullscreen mode without notification or warning
Product:	[Other] Security Response	Reporter:	Doran Moppert <dmoppert>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	erack, jhorak, nobody, stransky, tpopela
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	firefox 91.3, thunderbird 91.3	Doc Type:	If docs needed, set a value
Doc Text:	The Mozilla Foundation Security Advisory describes this flaw as: Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to spoofing attacks on the browser UI including phishing.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-11-03 20:07:56 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2019237, 2019238, 2019239, 2019240, 2019241, 2019242, 2019243, 2019244, 2019245, 2019246, 2019247, 2019248, 2019249, 2019250, 2019251, 2019254, 2019255, 2019256, 2019257, 2019258, 2019259, 2019260, 2019362, 2019363
Bug Blocks:	2019235

Description Doran Moppert 2021-11-03 00:41:33 UTC

Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to spoofing attacks on the browser UI including phishing.



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2021-49/#CVE-2021-38506

Comment 1 errata-xmlrpc 2021-11-03 16:03:24 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2021:4116 https://access.redhat.com/errata/RHSA-2021:4116

Comment 2 errata-xmlrpc 2021-11-03 19:41:54 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:4123 https://access.redhat.com/errata/RHSA-2021:4123

Comment 3 Product Security DevOps Team 2021-11-03 20:07:56 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-38506

Comment 4 errata-xmlrpc 2021-11-04 16:44:55 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2021:4133 https://access.redhat.com/errata/RHSA-2021:4133

Comment 5 errata-xmlrpc 2021-11-04 16:55:31 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2021:4132 https://access.redhat.com/errata/RHSA-2021:4132

Comment 6 errata-xmlrpc 2021-11-04 16:57:15 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:4130 https://access.redhat.com/errata/RHSA-2021:4130

Comment 7 errata-xmlrpc 2021-11-04 17:27:22 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2021:4134 https://access.redhat.com/errata/RHSA-2021:4134

Comment 9 errata-xmlrpc 2021-11-10 09:54:39 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2021:4607 https://access.redhat.com/errata/RHSA-2021:4607

Comment 10 errata-xmlrpc 2021-11-10 10:35:48 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2021:4605 https://access.redhat.com/errata/RHSA-2021:4605