CVE - CVE-2017-7820

CVE-ID
CVE-2017-7820	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
The "instanceof" operator can bypass the Xray wrapper mechanism. When called on web content from the browser itself or an extension the web content can provide its own result for that operator, possibly tricking the browser or extension into mishandling the element. This vulnerability affects Firefox < 56.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
BID:101057 URL:http://www.securityfocus.com/bid/101057 CONFIRM:https://bugzilla.mozilla.org/show_bug.cgi?id=1378207 CONFIRM:https://www.mozilla.org/security/advisories/mfsa2017-21/ SECTRACK:1039465 URL:http://www.securitytracker.com/id/1039465
Assigning CNA
Mozilla Corporation
Date Record Created
20170412	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20170412)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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