CVE-2021-33596: Fake Apple login prompt in F-Secure SAFE browser for iOS

Published Aug 5, 2021
·
Updated

Showing the legitimate URL in the address bar while loading the content from other domain. This makes the user believe that the content is served by a legit domain. Exploiting the vulnerability requires the user to click on a specially crafted, seemingly legitimate URL containing an embedded malicious redirect while using F-Secure Safe Browser for iOS.

Affected Software

1 affected component
F-Secure Safe Iphone Os<18.4.272901

Remediation

Information

Upgrade to version 18.4.x or newer from the App Store

Event History

Aug 5, 2021
CVE Published
via MITRE·07:26 PM
Data Sourced
via MITRE·07:26 PM
RemedyDescriptionSeverityWeakness
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Frequently Asked Questions

1

What is the severity of CVE-2021-33596?

The severity of CVE-2021-33596 is medium with a score of 4.1.

2

How does CVE-2021-33596 work?

CVE-2021-33596 allows an attacker to display a legitimate URL in the address bar while loading content from another domain, tricking users into believing it is from a legitimate source.

3

What software is affected by CVE-2021-33596?

F-Secure Safe version 18.4.272901 on iPhone OS is affected by CVE-2021-33596.

4

How can CVE-2021-33596 be exploited?

Exploiting CVE-2021-33596 requires the user to click on a specially crafted URL that appears legitimate but contains a malicious payload.

5

Are there any references available for CVE-2021-33596?

Yes, you can find references for CVE-2021-33596 at the following links: 1. [F-Secure Vulnerability Reward Program](https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame) 2. [F-Secure Security Advisories](https://www.f-secure.com/en/business/support-and-downloads/security-advisories) 3. [CVE-2021-33596 Security Advisory](https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-33596)

Contact

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