CVE-2021-25489 : Exploit Details and Defense Strategies

Samsung Mobile Devices are impacted by a vulnerability that arises from missing input validation in the modem interface driver. This flaw, assigned CVE-2021-25489, can be exploited with radio permission to trigger a format string bug that leads to a kernel panic.

Understanding CVE-2021-25489

This section will provide insights into the nature and impact of the CVE-2021-25489 vulnerability.

What is CVE-2021-25489?

The CVE-2021-25489 vulnerability in Samsung Mobile Devices stems from inadequate input validation in the modem interface driver, offering a potential attack vector for malicious actors.

The Impact of CVE-2021-25489

The impact of CVE-2021-25489 includes the potential for a kernel panic due to a format string bug triggered by exploiting the missing input validation.

Technical Details of CVE-2021-25489

Delve deeper into the technical aspects of the CVE-2021-25489 vulnerability to understand its implications.

Vulnerability Description

The vulnerability allows an attacker with radio permission to exploit missing input validation, resulting in a format string bug and subsequent kernel panic.

Affected Systems and Versions

Samsung Mobile Devices running versions O(8.1), P(9.0), Q(10.0), and R(11.0) are impacted, specifically those prior to SMR Oct-2021 Release 1.

Exploitation Mechanism

Exploiting the CVE-2021-25489 vulnerability requires gaining radio permission and utilizing the modem interface driver's lack of input validation.

Mitigation and Prevention

Explore the necessary steps to mitigate and prevent the exploitation of CVE-2021-25489.

Immediate Steps to Take

Users of affected Samsung Mobile Devices should apply security updates as soon as possible to patch the vulnerability and prevent potential attacks.

Long-Term Security Practices

Incorporating proper input validation measures and staying updated on security patches are crucial for maintaining long-term security against CVE-2021-25489.

Patching and Updates

Regularly checking for security updates from Samsung Mobile and promptly applying them is essential to protect devices from known vulnerabilities like CVE-2021-25489.