CVE-2021-4221

If a domain name contained a RTL character, it would cause the domain to be rendered to the right of the path. This could lead to user confusion and spoofing attacks. <br>*This bug only affects Firefox for Android. Other operating systems are unaffected.*<br>*Note*: Due to a clerical error this advisory was not included in the original announcement, and was added in Feburary 2022. This vulnerability affects Firefox < 92.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1704422	Exploit Issue Tracking Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-38/	Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1704422	Exploit Issue Tracking Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-38/	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

cpe:2.3:o:google:android:-:*:*:*:*:*:*:*

History

16 Apr 2025, 16:15

Type	Values Removed	Values Added
CWE		CWE-1007

Information

Published : 2022-12-22 20:15

Updated : 2025-04-16 16:15

NVD link : CVE-2021-4221

Mitre link : CVE-2021-4221

CVE.ORG link : CVE-2021-4221

JSON object : View

Products Affected

mozilla

firefox

google

android

CWE

NVD-CWE-Other CWE-1007

Insufficient Visual Distinction of Homoglyphs Presented to User

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