Bug 1748663 (CVE-2019-11738)

Summary:	CVE-2019-11738 Mozilla: Content security policy bypass through hash-based sources in directives
Product:	[Other] Security Response	Reporter:	Doran Moppert <dmoppert>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	jhorak, security-response-team, stransky
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	firefox 68.1	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-09-05 01:07:36 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:	1745831, 1745832, 1748670
Bug Blocks:	1745825

Description Doran Moppert 2019-09-04 00:48:28 UTC

If a Content Security Policy (CSP) directive is defined that uses a hash-based source that takes the empty string as input, execution of any `javascript:` URIs will be allowed. This could allow for malicious JavaScript content to be run, bypassing CSP permissions. 



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2019-26/#CVE-2019-11738

Comment 1 Doran Moppert 2019-09-04 00:48:31 UTC

Acknowledgments:

Name: the Mozilla project
Upstream: Wladimir Palant

Comment 3 errata-xmlrpc 2019-09-04 20:12:19 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 01:07:36 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-2019-11738