Bug 1342894 – CVE-2016-2825 Mozilla: Partial same-origin-policy through setting location.host through data: URI (MFSA 2016-54)

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Bug 1342894 - (CVE-2016-2825) CVE-2016-2825 Mozilla: Partial same-origin-policy through setting location.host through data: URI (MFSA 2016-54)

Summary:	CVE-2016-2825 Mozilla: Partial same-origin-policy through setting location.ho...

Status:	CLOSED NOTABUG

Aliases:	CVE-2016-2825

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
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URL:
Whiteboard:	impact=moderate,public=20160607,repor...
Keywords:	Security

Depends On:
Blocks:	1335788
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Reported:	2016-06-06 00:12 EDT by Huzaifa S. Sidhpurwala
Modified:	2016-06-08 23:10 EDT (History)
CC List:	1 user (show)

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Last Closed:	2016-06-08 23:10:54 EDT
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Description Huzaifa S. Sidhpurwala 2016-06-06 00:12:09 EDT

Security researcher Armin Razmdjou reported that the location.host property can be set to an arbitrary string after creating an invalid data: URI. This allows for a bypass of some same-origin policy protections. This issue is mitigated by the data: URI in use and any same-origin checks for http: or https: are still enforced correctly. As a result cookie stealing and other common same-origin bypass attacks are not possible. 


External Reference:

https://www.mozilla.org/security/announce/2016/mfsa2016-54.html


Acknowledgements:

Name: the Mozilla project
Upstream:  Armin Razmdjou

Statement:

This issue does not affect the version of firefox and thunderbird as shipped with Red Hat Enterprise Linux 5, 6 and 7.

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