CVE-2021-25393 : Security Advisory and Response

A detailed overview of CVE-2021-25393, an information disclosure vulnerability impacting Samsung Mobile Devices.

Understanding CVE-2021-25393

This section will cover what CVE-2021-25393 is, its impact, technical details, and mitigation steps.

What is CVE-2021-25393?

CVE-2021-25393 is an information disclosure vulnerability that arises from the improper sanitization of incoming intent in SecSettings before SMR MAY-2021 Release 1.

The Impact of CVE-2021-25393

The vulnerability allows local attackers to gain permissions to access system UID data, posing a risk to confidentiality.

Technical Details of CVE-2021-25393

Here we dive deeper into the vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

The flaw is classified as CWE-94, involving improper control of code generation (code injection) due to inadequate sanitization of inputs.

Affected Systems and Versions

Samsung Mobile Devices running versions Q(10.0) and R(11.0) before SMR MAY-2021 Release 1 are impacted by this vulnerability.

Exploitation Mechanism

Local attackers can exploit this issue to elevate privileges and access system UID data post activation.

Mitigation and Prevention

This section focuses on immediate steps to take, long-term security practices, and the importance of patching and updates.

Immediate Steps to Take

Users are advised to apply the latest security updates provided by Samsung Mobile to mitigate the vulnerability.

Long-Term Security Practices

Employing strong device security measures, avoiding suspicious links, and granting minimum app permissions are essential for enhancing overall security.

Patching and Updates

Regularly updating the device software with the latest patches and fixes from Samsung Mobile provides crucial protection against known vulnerabilities.