Bug 1576275 (CVE-2018-5175)

Summary:	CVE-2018-5175 Mozilla: Universal CSP bypass on sites using strict-dynamic in their policies
Product:	[Other] Security Response	Reporter:	Doran Moppert <dmoppert>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	cschalle, gecko-bugs-nobody, jhorak, security-response-team, stransky
Target Milestone:	---	Keywords:	Security
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Hardware:	All
OS:	Linux
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Last Closed:	2019-06-10 10:22:16 UTC	Type:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Bug Depends On:
Bug Blocks:	1573375

Description Doran Moppert 2018-05-09 07:15:53 UTC

A mechanism to bypass Content Security Policy (CSP) protections on sites that have a `script-src` policy of `'strict-dynamic'`. If a target website contains an HTML injection flaw an attacker could inject a reference to a copy of the `require.js` library that is part of Firefox’s Developer Tools, and then use a known technique using that library to bypass the CSP restrictions on executing injected scripts.



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2018-11/#CVE-2018-5175

Comment 1 Doran Moppert 2018-05-09 07:15:57 UTC

Acknowledgments:

Name: the Mozilla project
Upstream: Masato Kinugawa