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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2017-7764 Detail

Description

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.". This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
http://www.securityfocus.com/bid/99057 CVE, Mozilla Corporation Third Party Advisory  VDB Entry 
http://www.securitytracker.com/id/1038689 CVE, Mozilla Corporation Third Party Advisory  VDB Entry 
http://www.unicode.org/reports/tr31/tr31-26.html#Aspirational_Use_Scripts CVE, Mozilla Corporation Third Party Advisory 
https://access.redhat.com/errata/RHSA-2017:1440 CVE, Mozilla Corporation Third Party Advisory 
https://access.redhat.com/errata/RHSA-2017:1561 CVE, Mozilla Corporation Third Party Advisory 
https://bugzilla.mozilla.org/show_bug.cgi?id=1364283 CVE, Mozilla Corporation Exploit  Issue Tracking  Vendor Advisory 
https://www.debian.org/security/2017/dsa-3881 CVE, Mozilla Corporation Third Party Advisory 
https://www.debian.org/security/2017/dsa-3918 CVE, Mozilla Corporation Third Party Advisory 
https://www.mozilla.org/security/advisories/mfsa2017-15/ CVE, Mozilla Corporation Vendor Advisory 
https://www.mozilla.org/security/advisories/mfsa2017-16/ CVE, Mozilla Corporation Vendor Advisory 
https://www.mozilla.org/security/advisories/mfsa2017-17/ CVE, Mozilla Corporation Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-20 Improper Input Validation cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

6 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-7764
NVD Published Date:
06/11/2018
NVD Last Modified:
06/16/2026
Source:
Mozilla Corporation