CVE-2021-25457 : Vulnerability Insights and Analysis
Learn about CVE-2021-25457, an improper input validation vulnerability in DSP driver of Samsung Mobile Devices prior to SMR Sep-2021 Release 1, allowing local attackers to access kernel memory information.
An improper input validation vulnerability in DSP driver prior to SMR Sep-2021 Release 1 allows local attackers to get limited kernel memory information.
Understanding CVE-2021-25457
This CVE relates to an improper input validation vulnerability that can be exploited by local attackers on certain Samsung mobile devices with specific chipsets, potentially leading to the disclosure of kernel memory information.
What is CVE-2021-25457?
CVE-2021-25457 is a vulnerability in the DSP driver of Samsung Mobile Devices prior to SMR Sep-2021 Release 1. This vulnerability allows local attackers to access a limited amount of kernel memory information.
The Impact of CVE-2021-25457
The impact of this CVE is rated as MEDIUM with a CVSS base score of 5.9. It has a low impact on confidentiality, integrity, and availability. However, it poses a security risk as local attackers can potentially exploit the vulnerability.
Technical Details of CVE-2021-25457
This section provides a deeper insight into the vulnerability, including the description, affected systems and versions, and exploitation mechanism.
Vulnerability Description
The vulnerability arises due to improper input validation in the DSP driver of Samsung Mobile Devices. It allows local attackers to obtain a limited amount of kernel memory information.
Affected Systems and Versions
Samsung Mobile Devices running Q(10.0) and R(11.0) with Exynos 980, 9830, and 2100 chipsets are affected prior to SMR Sep-2021 Release 1.
Exploitation Mechanism
Local attackers can exploit this vulnerability to gain access to kernel memory information, potentially leading to further security breaches.
Mitigation and Prevention
To mitigate the risks associated with CVE-2021-25457, certain immediate steps can be taken along with implementing long-term security practices and applying necessary patches and updates.
Immediate Steps to Take
Users of affected Samsung Mobile Devices should exercise caution when downloading and executing untrusted code or applications.
Long-Term Security Practices
Implement strong security measures such as regular security updates, network segmentation, and least privilege access.
Patching and Updates
Ensure that devices are updated to SMR Sep-2021 Release 1 or later to address the vulnerability and enhance overall security posture.