CVE-2017-7832

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

The combined, single character, version of the letter 'i' with any of the potential accents in unicode, such as acute or grave, can be spoofed in the addressbar by the dotless version of 'i' followed by the same accent as a second character with most font sets. This allows for domain spoofing attacks because these combined domain names do not display as punycode. This vulnerability affects Firefox < 57.

References

http://www.securityfocus.com/bid/101832

http://www.securitytracker.com/id/1039803

https://bugzilla.mozilla.org/show_bug.cgi?id=1408782

https://www.mozilla.org/security/advisories/mfsa2017-24/

Details

Source: MITRE

Published: 2018-06-11

Updated: 2018-06-25

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

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* versions up to 56.0.2 (inclusive)

Tenable Plugins

View all (11 total)

IDNameProductFamilySeverity
700322Mozilla Firefox < 57 Multiple VulnerabilitiesNessus Network MonitorWeb Clients
critical
105542Ubuntu 14.04 LTS / 16.04 LTS / 17.04 / 17.10 : firefox regression (USN-3477-4)NessusUbuntu Local Security Checks
critical
104994Ubuntu 14.04 LTS / 16.04 LTS / 17.04 / 17.10 : firefox regressions (USN-3477-3)NessusUbuntu Local Security Checks
critical
104836FreeBSD : palemoon -- multiple vulnerabilities (6056bf68-f570-4e70-b740-b9f606971283)NessusFreeBSD Local Security Checks
high
104807Ubuntu 14.04 LTS / 16.04 LTS / 17.04 / 17.10 : firefox regression (USN-3477-2)NessusUbuntu Local Security Checks
critical
104652Ubuntu 14.04 LTS / 16.04 LTS / 17.04 / 17.10 : firefox vulnerabilities (USN-3477-1)NessusUbuntu Local Security Checks
critical
104638Mozilla Firefox < 57 Multiple VulnerabilitiesNessusWindows
critical
104637Mozilla Firefox ESR < 52.5 Multiple VulnerabilitiesNessusWindows
critical
104636Mozilla Firefox < 57 Multiple Vulnerabilities (macOS)NessusMacOS X Local Security Checks
critical
104635Mozilla Firefox ESR < 52.5 Multiple Vulnerabilities (macOS)NessusMacOS X Local Security Checks
critical
104564FreeBSD : mozilla -- multiple vulnerabilities (f78eac48-c3d1-4666-8de5-63ceea25a578)NessusFreeBSD Local Security Checks
critical