Bug 1748655 (CVE-2019-11744)

Summary:	CVE-2019-11744 Mozilla: XSS by breaking out of title and textarea elements using innerHTML
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 60.9, firefox 68.1, thunderbird 60.9	Doc Type:	No Doc Update
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-09-05 01:07:25 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:	1745828, 1745829, 1745830, 1745831, 1745832, 1748670, 1749598, 1749599, 1749601
Bug Blocks:	1745825

Description Doran Moppert 2019-09-04 00:41:18 UTC

Some HTML elements, such as `<title>` and `<textarea>`, can contain literal angle brackets without treating them as markup. It is possible to pass a literal closing tag to `.innerHTML` on these elements, and subsequent content after that will be parsed as if it were outside the tag. This can lead to XSS if a site does not filter user input as strictly for these elements as it does for other elements.



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2019-27/#CVE-2019-11744

Comment 1 Doran Moppert 2019-09-04 00:41:21 UTC

Acknowledgments:

Name: the Mozilla project
Upstream: Rakesh Mane

Comment 3 errata-xmlrpc 2019-09-04 20:12:28 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:2663 https://access.redhat.com/errata/RHSA-2019:2663

Comment 4 Product Security DevOps Team 2019-09-05 01:07:25 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-2019-11744

Comment 5 errata-xmlrpc 2019-09-10 09:12:56 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2019:2694 https://access.redhat.com/errata/RHSA-2019:2694

Comment 6 errata-xmlrpc 2019-09-11 09:56:59 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:2729 https://access.redhat.com/errata/RHSA-2019:2729

Comment 7 Doran Moppert 2019-09-16 08:31:34 UTC

Statement:

In general, this flaw cannot be exploited through email in Thunderbird because scripting is disabled when reading mail, but it may present a risk in browser-like contexts.

Comment 8 errata-xmlrpc 2019-09-16 14:22:22 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:2774 https://access.redhat.com/errata/RHSA-2019:2774

Comment 9 errata-xmlrpc 2019-09-19 03:39:00 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:2773 https://access.redhat.com/errata/RHSA-2019:2773

Comment 10 errata-xmlrpc 2019-09-19 06:25:14 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2019:2807 https://access.redhat.com/errata/RHSA-2019:2807