CVE-2021-25475 : What You Need to Know
Learn about CVE-2021-25475, a heap-based buffer overflow vulnerability affecting Samsung Mobile Devices, enabling attackers to execute arbitrary code. Find out the impact, technical details, and mitigation steps.
A heap-based buffer overflow vulnerability in DSP kernel driver of Samsung Mobile Devices prior to the SMR Oct-2021 Release 1 could allow an attacker to execute arbitrary code by triggering arbitrary memory writes.
Understanding CVE-2021-25475
This CVE refers to a security issue in Samsung Mobile Devices that can be exploited to perform heap-based buffer overflow attacks.
What is CVE-2021-25475?
The vulnerability lies in the DSP kernel driver of affected Samsung Mobile Devices, enabling attackers to write arbitrary memory and execute malicious code.
The Impact of CVE-2021-25475
The vulnerability has a CVSS v3.1 base score of 3.9 (Low severity) with high attack complexity and local attack vector, potentially leading to unauthorized code execution.
Technical Details of CVE-2021-25475
The technical details include vulnerability description, affected systems and versions, and the exploitation mechanism.
Vulnerability Description
The vulnerability allows for a heap-based buffer overflow in the DSP kernel driver, facilitating arbitrary memory writes and code execution.
Affected Systems and Versions
Samsung Mobile Devices running versions Q(10.0) and R(11.0) prior to SMR Oct-2021 Release 1 are impacted.
Exploitation Mechanism
To exploit this issue, an attacker needs high privileges and local access to the targeted device.
Mitigation and Prevention
To address CVE-2021-25475, immediate actions and long-term security practices should be implemented in addition to applying relevant patches and updates.
Immediate Steps to Take
Users are advised to update their Samsung Mobile Devices to the latest SMR Oct-2021 Release 1 or subsequent versions to mitigate the vulnerability.
Long-Term Security Practices
Implement security best practices such as regular software updates, strong access controls, and network segmentation to enhance overall cybersecurity posture.
Patching and Updates
Samsung Mobile users should regularly check for available security updates and apply them promptly to protect their devices against potential threats.