Bug 1693621 (CVE-2018-12398)

Summary: CVE-2018-12398 firefox: Content Security Policy bypass through stylesheet injection in resource URIs
Product: [Other] Security Response Reporter: msiddiqu
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED WONTFIX QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: 0xalen+redhat, anto.trande, gecko-bugs-nobody, jhorak, john.j5live, kengert, pjasicek, rhughes, rstrode, sandmann, stransky
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: firefox 63 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-04-01 02:16:26 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: 1692382    

Description msiddiqu 2019-03-28 10:57:58 UTC
By using the reflected URL in some special resource URIs, such as chrome:, it is possible to inject stylesheets and bypass Content Security Policy (CSP). This vulnerability affects Firefox < 63.

References:

https://bugzilla.mozilla.org/show_bug.cgi?id=1460538
https://bugzilla.mozilla.org/show_bug.cgi?id=1488061

External References:

https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/#CVE-2018-12398