CVE-2021-40835 MEDIUM

CVE-2021-40835: URL Address Bar Spoofing in F-Secure SAFE Browser for iOS

Vendor F-Secure
Product F-Secure Mobile Security
Published December 16, 2021
Last update August 4, 2024

CVSS base score

4.6/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

What the vulnerability does

01Description

An URL Address bar spoofing vulnerability was discovered in Safe Browser for iOS. When user clicks on a specially crafted a malicious URL, if user does not carefully pay attention to url, user may be tricked to think content may be coming from a valid domain, while it comes from another. This is performed by using a very long username part of the url so that user cannot see the domain name. A remote attacker can leverage this to perform url address bar spoofing attack. The fix is, browser no longer shows the user name part in address bar.

Key dates

02Disclosure timeline

December 16, 2021 CVE published
August 4, 2024 Record updated