CVE-2021-44751

F-Secure SAFE Browser vulnerable to USSD attacks

Description

A vulnerability affecting F-Secure SAFE browser was discovered. A maliciously crafted website attached with USSD code in JavaScript or iFrame can trigger dialer application from F-Secure browser which can be exploited by an attacker to send unwanted USSD messages or perform unwanted calls. In most modern Android OS, dialer application will require user interaction, however, some older Android OS may not need user interaction.

Remediation

Solution:

  • FIX : A fix has been released in the automatic update channel since 22nd, March 2022. No user action is required.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.10%
Affected: F-Secure F-Secure SAFE Browser for Android Version 18.5 & below
Published at:
Updated at:

References

Link Tags
https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame not applicable

Frequently Asked Questions

What is the severity of CVE-2021-44751?
CVE-2021-44751 has been scored as a medium severity vulnerability.
How to fix CVE-2021-44751?
To fix CVE-2021-44751: FIX : A fix has been released in the automatic update channel since 22nd, March 2022. No user action is required.
Is CVE-2021-44751 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-44751 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-44751?
CVE-2021-44751 affects F-Secure F-Secure SAFE Browser for Android Version 18.5 & below.
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