CVE-2021-25386 Explained : Impact and Mitigation

A vulnerability in the libsdffextractor library in Samsung Mobile Devices prior to SMR MAY-2021 Release 1 could allow an attacker to execute arbitrary code on the mediaextractor process.

Understanding CVE-2021-25386

This CVE highlights an improper input validation issue that poses a critical threat to Samsung Mobile Devices.

What is CVE-2021-25386?

The vulnerability lies in sdfffd_parse_chunk_FVER() in the libsdffextractor library, enabling attackers to execute arbitrary code.

The Impact of CVE-2021-25386

With a CVSS base score of 9, this critical vulnerability can result in high confidentiality, integrity, and availability impact without requiring any special privileges from the attacker.

Technical Details of CVE-2021-25386

This section delves into the specifics of the vulnerability affecting Samsung Mobile Devices.

Vulnerability Description

The vulnerability allows attackers to achieve remote code execution on the mediaextractor process, leveraging an improper input validation flaw in the library.

Affected Systems and Versions

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

Exploitation Mechanism

The vulnerability can be exploited through a network-based attack vector, with high attack complexity but does not require user interaction.

Mitigation and Prevention

To safeguard against CVE-2021-25386, immediate action and long-term security practices are crucial.

Immediate Steps to Take

Users should apply the SMR MAY-2021 Release 1 update provided by Samsung Mobile to address this vulnerability.

Long-Term Security Practices

Regularly update devices with the latest security patches and follow secure coding practices to mitigate the risk of similar vulnerabilities.

Patching and Updates

Stay informed about security updates from Samsung Mobile and promptly apply patches to ensure the ongoing security of Samsung Mobile Devices.