CVE-2021-25493 : Security Advisory and Response
Discover details of CVE-2021-25493 impacting Samsung Notes prior to 4.3.02.61, allowing unauthorized access to memory. Learn about the impact, affected systems, and mitigation steps.
A buffer boundary checking issue in the libSPenBase library of Samsung Notes prior to version 4.3.02.61 could allow an out-of-bounds read.
Understanding CVE-2021-25493
This section provides insights into the impact and technical details of the CVE.
What is CVE-2021-25493?
The vulnerability in the libSPenBase library of Samsung Notes allows an attacker to read outside the bounds of allocated memory, potentially exposing sensitive information.
The Impact of CVE-2021-25493
The vulnerability has a CVSS v3.1 base score of 4, with medium severity. It poses a low risk to confidentiality, no impact on integrity, and does not require special privileges or user interaction to exploit.
Technical Details of CVE-2021-25493
Details regarding the vulnerability, affected systems, and exploitation methods are discussed here.
Vulnerability Description
The flaw arises due to inadequate buffer boundary validation in the libSPenBase library, allowing unauthorized access to memory locations.
Affected Systems and Versions
Samsung Notes versions prior to 4.3.02.61 are impacted by this vulnerability.
Exploitation Mechanism
An attacker with local access can exploit this vulnerability to read sensitive data from memory buffers.
Mitigation and Prevention
This section provides guidance on mitigating the risks associated with CVE-2021-25493.
Immediate Steps to Take
Users are advised to update Samsung Notes to version 4.3.02.61 or above to mitigate the vulnerability.
Long-Term Security Practices
Regularly update software and apply security patches to prevent exploitation of known vulnerabilities.
Patching and Updates
Stay informed about security updates from Samsung Mobile and apply patches promptly to ensure system security.