CVE-2017-7764

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

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.

References

http://www.securityfocus.com/bid/99057

http://www.securitytracker.com/id/1038689

http://www.unicode.org/reports/tr31/tr31-26.html#Aspirational_Use_Scripts

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

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

https://bugzilla.mozilla.org/show_bug.cgi?id=1364283

https://www.debian.org/security/2017/dsa-3881

https://www.debian.org/security/2017/dsa-3918

https://www.mozilla.org/security/advisories/mfsa2017-15/

https://www.mozilla.org/security/advisories/mfsa2017-16/

https://www.mozilla.org/security/advisories/mfsa2017-17/

Details

Source: MITRE

Published: 2018-06-11

Updated: 2018-08-13

Type: CWE-20

Risk Information

CVSS v2

Base Score: 5

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

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Impact Score: 1.4

Exploitability Score: 3.9

Severity: MEDIUM

Tenable Plugins

View all (32 total)

IDNameProductFamilySeverity
127347NewStart CGSL MAIN 4.05 : thunderbird Multiple Vulnerabilities (NS-SA-2019-0110)NessusNewStart CGSL Local Security Checks
critical
127332NewStart CGSL MAIN 4.05 : firefox Multiple Vulnerabilities (NS-SA-2019-0103)NessusNewStart CGSL Local Security Checks
critical
106884GLSA-201802-03 : Mozilla Firefox: Multiple vulnerabilitiesNessusGentoo Local Security Checks
critical
102694SUSE SLES11 Security Update : MozillaFirefox, MozillaFirefox-branding-SLED, firefox-gcc5, mozilla-nss (SUSE-SU-2017:2235-1)NessusSuSE Local Security Checks
critical
101983Debian DSA-3918-1 : icedove - security updateNessusDebian Local Security Checks
critical
101855EulerOS 2.0 SP2 : firefox (EulerOS-SA-2017-1127)NessusHuawei Local Security Checks
critical
101854EulerOS 2.0 SP1 : firefox (EulerOS-SA-2017-1126)NessusHuawei Local Security Checks
critical
101772Mozilla Thunderbird < 52.2 Multiple VulnerabilitiesNessusWindows
critical
101771Mozilla Thunderbird < 52.2 Multiple Vulnerabilities (macOS)NessusMacOS X Local Security Checks
critical
101485Virtuozzo 6 : thunderbird (VZLSA-2017-1561)NessusVirtuozzo Local Security Checks
critical
101480Virtuozzo 7 : firefox (VZLSA-2017-1440)NessusVirtuozzo Local Security Checks
critical
101261Ubuntu 14.04 LTS / 16.04 LTS / 16.10 / 17.04 : thunderbird vulnerabilities (USN-3321-1)NessusUbuntu Local Security Checks
critical
101208Debian DLA-1007-1 : icedove/thunderbird security updateNessusDebian Local Security Checks
critical
101055SUSE SLED12 / SLES12 Security Update : MozillaFirefox, MozillaFirefox-branding-SLE (SUSE-SU-2017:1669-1)NessusSuSE Local Security Checks
critical
100984Scientific Linux Security Update : thunderbird on SL6.x, SL7.x i386/x86_64 (20170621)NessusScientific Linux Local Security Checks
critical
100978Oracle Linux 6 / 7 : thunderbird (ELSA-2017-1561)NessusOracle Linux Local Security Checks
critical
100965CentOS 6 / 7 : thunderbird (CESA-2017:1561)NessusCentOS Local Security Checks
critical
100950RHEL 6 / 7 : thunderbird (RHSA-2017:1561)NessusRed Hat Local Security Checks
critical
100885openSUSE Security Update : Mozilla based packages (openSUSE-2017-712)NessusSuSE Local Security Checks
critical
100851Debian DLA-991-1 : firefox-esr security updateNessusDebian Local Security Checks
critical
100835Ubuntu 14.04 LTS / 16.04 LTS / 16.10 / 17.04 : firefox vulnerabilities (USN-3315-1)NessusUbuntu Local Security Checks
critical
100815CentOS 6 / 7 : firefox (CESA-2017:1440)NessusCentOS Local Security Checks
critical
100810Mozilla Firefox < 54 Multiple VulnerabilitiesNessusWindows
critical
100809Mozilla Firefox ESR < 52.2 Multiple VulnerabilitiesNessusWindows
critical
100808Mozilla Firefox < 54 Multiple Vulnerabilities (macOS)NessusMacOS X Local Security Checks
critical
100807Mozilla Firefox ESR < 52.2 Multiple Vulnerabilities (macOS)NessusMacOS X Local Security Checks
critical
100802Scientific Linux Security Update : firefox on SL6.x, SL7.x i386/x86_64 (20170614)NessusScientific Linux Local Security Checks
critical
100801RHEL 6 / 7 : firefox (RHSA-2017:1440)NessusRed Hat Local Security Checks
critical
100800Oracle Linux 6 / 7 : firefox (ELSA-2017-1440)NessusOracle Linux Local Security Checks
critical
100797Debian DSA-3881-1 : firefox-esr - security updateNessusDebian Local Security Checks
critical
700134Mozilla Firefox < 54 Multiple VulnerabilitiesNessus Network MonitorWeb Clients
high
100775FreeBSD : mozilla -- multiple vulnerabilities (6cec1b0a-da15-467d-8691-1dea392d4c8d)NessusFreeBSD Local Security Checks
critical