Bug 1730981 (CVE-2019-11716)

Summary: CVE-2019-11716 Mozilla: globalThis not enumerable until accessed
Product: [Other] Security Response Reporter: Doran Moppert <dmoppert>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED WONTFIX QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: jhorak, security-response-team, stransky
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: firefox 68 Doc Type: If docs needed, set a value
Doc Text:
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Clone Of: Environment:
Last Closed: 2019-07-18 21:06:46 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:    
Bug Blocks: 1730979    

Description Doran Moppert 2019-07-18 06:00:31 UTC
Until explicitly accessed by script, `window.globalThis` is not enumerable and, as a result, is not visible to code such as `Object.getOwnPropertyNames(window)`. Sites that deploy a sandboxing that depends on enumerating and freezing access to the window object may miss this, allowing their sandboxes to be bypassed.



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2019-21/#CVE-2019-11716

Comment 1 Doran Moppert 2019-07-18 06:00:33 UTC
Acknowledgments:

Name: the Mozilla project
Upstream: Chris Hacking

Comment 2 Product Security DevOps Team 2019-07-18 21:06:46 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-2019-11716