Published: 11/06/2018 Updated: 13/08/2018

CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10

CVSS v3 Base Score: 5.3 | Impact Score: 1.4 | Exploitability Score: 3.9

VMScore: 445

Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N

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.

Vulnerable Product	Search on Vulmon	Subscribe to Product
mozilla firefox esr
mozilla firefox
mozilla thunderbird
debian debian linux 8.0
debian debian linux 9.0

Synopsis Important: thunderbird security update Type/Severity Security Advisory: Important Topic An update for thunderbird is now available for Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7Red Hat Product Security has rated this update as having a security impact of Important A Common Vulnerab ...

Synopsis Critical: firefox security update Type/Severity Security Advisory: Critical Topic An update for firefox is now available for Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7Red Hat Product Security has rated this update as having a security impact of Critical A Common Vulnerability Scori ...

Several security issues were fixed in Thunderbird ...

Firefox could be made to crash or run programs as your login if it opened a malicious website ...

Multiple security issues have been found in Thunderbird, which may lead to the execution of arbitrary code or denial of service Debian follows the extended support releases (ESR) of Thunderbird Support for the 45x series has ended, so starting with this update we're now following the 52x releases For the oldstable distribution (jessie), these ...

A security issue has been found in Firefox < 540 and Thunderbird < 522, where 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 curre ...

Mozilla Foundation Security Advisory 2017-16 Security vulnerabilities fixed in Firefox ESR 522 Announced June 13, 2017 Impact critical Products Firefox ESR Fixed in Firefox ESR 522 ...

Mozilla Foundation Security Advisory 2017-15 Security vulnerabilities fixed in Firefox 54 Announced June 13, 2017 Impact critical Products Firefox Fixed in Firefox 54 ...

Mozilla Foundation Security Advisory 2017-17 Security vulnerabilities fixed in Thunderbird 522 Announced June 14, 2017 Impact critical Products Thunderbird Fixed in Thunderbird 522 ...

CWE-20 https://www.mozilla.org/security/advisories/mfsa2017-17/https://www.mozilla.org/security/advisories/mfsa2017-16/https://www.mozilla.org/security/advisories/mfsa2017-15/https://bugzilla.mozilla.org/show_bug.cgi?id=1364283 http://www.unicode.org/reports/tr31/tr31-26.html#Aspirational_Use_Scripts https://www.debian.org/security/2017/dsa-3918 https://www.debian.org/security/2017/dsa-3881 https://access.redhat.com/errata/RHSA-2017:1561 https://access.redhat.com/errata/RHSA-2017:1440 http://www.securitytracker.com/id/1038689 http://www.securityfocus.com/bid/99057 https://access.redhat.com/errata/RHSA-2017:1561 https://nvd.nist.gov https://usn.ubuntu.com/3321-1/https://access.redhat.com/security/cve/cve-2017-7764

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CVE-2017-7764

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