Bug 2002118 (CVE-2021-38492)

Summary:	CVE-2021-38492 Mozilla: Navigating to `mk:` URL scheme could load Internet Explorer
Product:	[Other] Security Response	Reporter:	Doran Moppert <dmoppert>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	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 78.14, thunderbird 78.14	Doc Type:	No Doc Update
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-09-08 02:33:31 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:
Bug Blocks:	2001486

Description Doran Moppert 2021-09-08 01:09:16 UTC

When delegating navigations to the operating system, Firefox would accept the `mk` scheme which might allow attackers to launch pages and execute scripts in Internet Explorer in unprivileged mode.


*This bug only affects Firefox for Windows. Other operating systems are unaffected.*



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2021-39/#CVE-2021-38492

Comment 1 Product Security DevOps Team 2021-09-08 02:33:31 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-2021-38492