CVE-2021-25383 : Security Advisory and Response

An improper input validation vulnerability in scmn_mfal_read() in libsapeextractor library prior to SMR MAY-2021 Release 1 allows attackers to execute arbitrary code on mediaextractor process.

Understanding CVE-2021-25383

This CVE impacts Samsung Mobile Devices with versions O(8.1), P(9.x), Q(10.0), R(11.0) prior to SMR MAY-2021 Release 1.

What is CVE-2021-25383?

CVE-2021-25383 is an improper input validation vulnerability that allows attackers to execute arbitrary code on the mediaextractor process in Samsung Mobile Devices.

The Impact of CVE-2021-25383

This vulnerability has a CVSS base score of 9, with critical severity. It can lead to high impacts on confidentiality, integrity, and availability of the affected systems.

Technical Details of CVE-2021-25383

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability lies in the libsapeextractor library, enabling attackers to trigger arbitrary code execution on the mediaextractor process.

Affected Systems and Versions

Samsung Mobile Devices running versions O(8.1), P(9.x), Q(10.0), R(11.0) are impacted prior to SMR MAY-2021 Release 1.

Exploitation Mechanism

The vulnerability can be exploited by attackers to execute malicious code on the mediaextractor process via scmn_mfal_read() function.

Mitigation and Prevention

To safeguard systems from CVE-2021-25383, immediate actions and long-term security practices are essential.

Immediate Steps to Take

Apply security updates released by Samsung Mobile, specifically SMR MAY-2021 Release 1.
Monitor for any unusual system behavior that may indicate exploitation.

Long-Term Security Practices

Regularly update devices with the latest security patches and firmware updates.
Employ network segmentation and access controls to limit exposure to potential threats.

Patching and Updates

Stay informed about security advisories and updates from Samsung Mobile to address known vulnerabilities promptly.