Bug 1942786 (CVE-2021-23984)

Summary:	CVE-2021-23984 Mozilla: Malicious extensions could have spoofed popup information
Product:	[Other] Security Response	Reporter:	Doran Moppert <dmoppert>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	erack, jhorak, nobody, stransky, tpopela
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	firefox 78.9, thunderbird 78.9	Doc Type:	If docs needed, set a value
Doc Text:	The Mozilla Foundation Security Advisory describes this issue as: A malicious extension could have opened a popup window lacking an address bar. The title of the popup lacking an address bar should not be fully controllable, but in this situation was. This could have been used to spoof a website and attempt to trick the user into providing credentials.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-03-25 17:35:20 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:	1939796, 1939797, 1939798, 1939799, 1939800, 1939801, 1939805, 1939806, 1939807, 1939808, 1939809, 1939810
Bug Blocks:	1939794

Description Doran Moppert 2021-03-25 00:47:48 UTC

A malicious extension could have opened a popup window lacking an address bar. The title of the popup lacking an address bar should not be fully controllable, but in this situation was. This could have been used to spoof a website and attempt to trick the user into providing credentials.



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2021-11/#CVE-2021-23984

Comment 1 Doran Moppert 2021-03-25 00:47:52 UTC

Acknowledgments:

Name: the Mozilla project
Upstream: Rob Wu

Comment 2 errata-xmlrpc 2021-03-25 12:19:28 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:0990 https://access.redhat.com/errata/RHSA-2021:0990

Comment 3 errata-xmlrpc 2021-03-25 12:30:44 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2021:0991 https://access.redhat.com/errata/RHSA-2021:0991

Comment 4 errata-xmlrpc 2021-03-25 12:55:59 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2021:0995 https://access.redhat.com/errata/RHSA-2021:0995

Comment 5 errata-xmlrpc 2021-03-25 12:56:55 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:0993 https://access.redhat.com/errata/RHSA-2021:0993

Comment 6 errata-xmlrpc 2021-03-25 12:57:23 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2021:0989 https://access.redhat.com/errata/RHSA-2021:0989

Comment 7 errata-xmlrpc 2021-03-25 12:57:52 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2021:0994 https://access.redhat.com/errata/RHSA-2021:0994

Comment 8 errata-xmlrpc 2021-03-25 13:33:15 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2021:0996 https://access.redhat.com/errata/RHSA-2021:0996

Comment 9 errata-xmlrpc 2021-03-25 13:33:55 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2021:0992 https://access.redhat.com/errata/RHSA-2021:0992

Comment 10 Product Security DevOps Team 2021-03-25 17:35:20 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-2021-23984