// For flags

CVE-2021-40835

URL Address Bar Spoofing in F-Secure SAFE Browser for iOS

Severity Score

4.3
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

Se ha detectado una vulnerabilidad de suplantación de la Barra de Direcciones URL en Safe Browser para iOS. Cuando el usuario hace clic en una URL maliciosa especialmente diseñada, si el usuario no presta atención a la url, puede ser engañado para pensar que el contenido puede venir de un dominio válido, mientras que viene de otro. Esto se lleva a cabo al usar una parte del nombre de usuario muy larga en la url para que el usuario no pueda visualizar el nombre del dominio. Un atacante remoto puede aprovechar esto para llevar a cabo un ataque de suplantación de la barra de direcciones url. La corrección es que el navegador ya no muestra la parte del nombre de usuario en la barra de direcciones

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-09-09 CVE Reserved
  • 2021-12-16 CVE Published
  • 2024-08-04 CVE Updated
  • 2024-08-31 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
F-secure
Search vendor "F-secure"
Safe
Search vendor "F-secure" for product "Safe"
< 18.3
Search vendor "F-secure" for product "Safe" and version " < 18.3"
iphone_os
Affected