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: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: 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:
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