Bug 1496657 (CVE-2017-7825)

Summary:	CVE-2017-7825 Mozilla: OS X fonts render some Tibetan and Arabic unicode characters as spaces (MFSA 2017-22)
Product:	[Other] Security Response	Reporter:	Doran Moppert <dmoppert>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	cschalle, gecko-bugs-nobody, jhorak, security-response-team, stransky
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-09-28 19:04:00 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1494903

Description Doran Moppert 2017-09-28 04:28:43 UTC

Several fonts on OS X display some Tibetan and Arabic characters as whitespace. When used in the addressbar as part of an IDN this can be used for domain name spoofing attacks. 

*Note: This attack only affects OS X operating systems. Other operating systems are unaffected.* 


External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2017-22/#CVE-2017-7825

Comment 2 Doran Moppert 2017-09-28 05:05:11 UTC

Acknowledgments:

Name: the Mozilla project
Upstream: Khalil Zhani

Comment 4 Tomas Hoger 2017-09-28 19:02:46 UTC

Public now via upstream advisories:

https://www.mozilla.org/en-US/security/advisories/mfsa2017-22/
https://www.mozilla.org/en-US/security/advisories/mfsa2017-21/

Comment 5 Tomas Hoger 2017-09-28 19:04:00 UTC

In reply to comment 0:
> *Note: This attack only affects OS X operating systems. Other operating
> systems are unaffected.* 

Linux belongs to the unaffected category.