Bug 1788723 (CVE-2019-17016)

Summary:	CVE-2019-17016 Mozilla: Bypass of @namespace CSS sanitization during pasting
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:	cschalle, gecko-bugs-nobody, jhorak, security-response-team, stransky
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	firefox 68.4, thunderbird 68.4.1	Doc Type:	No Doc Update
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-01-13 20:09:30 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:	1788028, 1788029, 1788030, 1788031, 1788032, 1788033, 1790248, 1790249, 1790250, 1790251, 1790252, 1790253
Bug Blocks:	1787590

Description Doran Moppert 2020-01-07 22:36:26 UTC

When pasting a `<style>` tag from the clipboard into a rich text editor, the CSS sanitizer incorrectly rewrites a @namespace rule. This could allow for injection into certain types of websites resulting in data exfiltration.



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2020-02/#CVE-2019-17016

Comment 1 Doran Moppert 2020-01-07 22:36:29 UTC

Acknowledgments:

Name: the Mozilla project
Upstream: Michał Bentkowski

Comment 2 errata-xmlrpc 2020-01-13 14:19:42 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2020:0086 https://access.redhat.com/errata/RHSA-2020:0086

Comment 3 errata-xmlrpc 2020-01-13 14:38:43 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:0085 https://access.redhat.com/errata/RHSA-2020:0085

Comment 4 Product Security DevOps Team 2020-01-13 20:09:30 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-2019-17016

Comment 6 errata-xmlrpc 2020-01-14 18:38:59 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:0111 https://access.redhat.com/errata/RHSA-2020:0111

Comment 7 errata-xmlrpc 2020-01-16 11:50:06 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2020:0123 https://access.redhat.com/errata/RHSA-2020:0123

Comment 8 errata-xmlrpc 2020-01-16 11:57:53 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:0120 https://access.redhat.com/errata/RHSA-2020:0120

Comment 9 errata-xmlrpc 2020-01-16 12:52:55 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:0127 https://access.redhat.com/errata/RHSA-2020:0127

Comment 10 errata-xmlrpc 2020-01-30 09:02:21 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions

Via RHSA-2020:0292 https://access.redhat.com/errata/RHSA-2020:0292

Comment 11 errata-xmlrpc 2020-01-30 10:02:33 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions

Via RHSA-2020:0295 https://access.redhat.com/errata/RHSA-2020:0295