Bug 1728438 (CVE-2019-11730)

Summary:	CVE-2019-11730 Mozilla: Same-origin policy treats all files in a directory as having the same-origin
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:	cschalle, gecko-bugs-nobody, jhorak, stransky
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-07-12 13:08:41 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:	1726061, 1726062, 1726063, 1726064, 1726065, 1726882, 1726883, 1726884, 1726885, 1726886
Bug Blocks:	1726057

Description Doran Moppert 2019-07-10 00:27:42 UTC

A vulnerability exists where if a user opens a locally saved HTML file, this file can use `file:` URIs to access other files in the same directory or sub-directories if the names are known or guessed. The Fetch API can then be used to read the contents of any files stored in these directories and they may uploaded to a server. Luigi Gubello demonstrated that in combination with a popular Android messaging app, if a malicious HTML attachment is sent to a user and they opened that attachment in Firefox, due to that app's predictable pattern for locally-saved file names, it is possible to read attachments the victim received from other correspondents.



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2019-22/#CVE-2019-11730

Comment 1 Doran Moppert 2019-07-10 00:27:45 UTC

Acknowledgments:

Name: the Mozilla project
Upstream: Luigi Gubello

Comment 2 errata-xmlrpc 2019-07-11 17:19:44 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:1764 https://access.redhat.com/errata/RHSA-2019:1764

Comment 3 errata-xmlrpc 2019-07-11 17:51:56 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2019:1765 https://access.redhat.com/errata/RHSA-2019:1765

Comment 4 errata-xmlrpc 2019-07-11 17:55:52 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:1763 https://access.redhat.com/errata/RHSA-2019:1763

Comment 5 Product Security DevOps Team 2019-07-12 13:08:41 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-2019-11730

Comment 6 errata-xmlrpc 2019-07-15 12:41:02 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:1775 https://access.redhat.com/errata/RHSA-2019:1775

Comment 7 errata-xmlrpc 2019-07-15 13:35:12 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2019:1777 https://access.redhat.com/errata/RHSA-2019:1777

Comment 8 errata-xmlrpc 2019-07-16 20:27:05 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:1799 https://access.redhat.com/errata/RHSA-2019:1799