Bug 1461262 (CVE-2017-7764) - CVE-2017-7764 Mozilla: Domain spoofing with combination of Canadian Syllabics and other unicode blocks (MFSA 2017-16)
Summary: CVE-2017-7764 Mozilla: Domain spoofing with combination of Canadian Syllabics...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2017-7764
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 1459420
TreeView+ depends on / blocked
 
Reported: 2017-06-14 04:39 UTC by Huzaifa S. Sidhpurwala
Modified: 2019-09-29 14:14 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
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Clone Of:
Environment:
Last Closed: 2017-06-27 06:16:11 UTC


Attachments (Terms of Use)


Links
System ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2017:1440 normal SHIPPED_LIVE Critical: firefox security update 2017-06-14 11:51:35 UTC
Red Hat Product Errata RHSA-2017:1561 normal SHIPPED_LIVE Important: thunderbird security update 2017-06-21 08:36:28 UTC

Description Huzaifa S. Sidhpurwala 2017-06-14 04:39:34 UTC
Characters from the "Canadian Syllabics" unicode block can be mixed with characters from other unicode blocks in the addressbar instead of being rendered as their raw "punycode" form, allowing for domain name spoofing attacks through character confusion. The current Unicode standard allows characters from "Aspirational Use Scripts" such as Canadian Syllabics to be mixed with Latin characters in the "moderately restrictive" IDN profile. We have changed Firefox behavior to match the upcoming Unicode version 10.0 which removes this category and treats them as "Limited Use Scripts." 


External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2017-16/#CVE-2017-7764


Acknowledgements:

Name: the Mozilla project
Upstream: Samuel Erb

Comment 1 errata-xmlrpc 2017-06-14 07:53:49 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 7

Via RHSA-2017:1440 https://access.redhat.com/errata/RHSA-2017:1440

Comment 2 errata-xmlrpc 2017-06-21 04:37:53 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 7

Via RHSA-2017:1561 https://access.redhat.com/errata/RHSA-2017:1561


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