CVE-2017-7838

Description

Punycode format text will be displayed for entire qualified international domain names in some instances when a sub-domain triggers the punycode display instead of the primary domain being displayed in native script and the sub-domain only displaying as punycode. This could be used for limited spoofing attacks due to user confusion. This vulnerability affects Firefox < 57.

Weakness classification

• CWE-20: Improper Input Validation

Primary references

• security@mozilla.org — Third Party Advisory, VDB Entry
• security@mozilla.org — Third Party Advisory, VDB Entry
• security@mozilla.org — Issue Tracking, Permissions Required
• security@mozilla.org — Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry
• af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry
• af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Permissions Required
• af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory