CVE-2021-25501 Explained : Impact and Mitigation
Learn about CVE-2021-25501, an improper access control vulnerability in SCloudBnRReceiver affecting Samsung Mobile Devices. Discover impact, affected versions, and mitigation steps.
A vulnerability in SCloudBnRReceiver in SecTelephonyProvider allows untrusted apps to call protected providers.
Understanding CVE-2021-25501
This CVE identifies an improper access control vulnerability impacting Samsung Mobile Devices.
What is CVE-2021-25501?
CVE-2021-25501 involves an improper access control vulnerability in SCloudBnRReceiver within SecTelephonyProvider before SMR Nov-2021 Release 1. This flaw permits untrusted applications to invoke certain protected providers.
The Impact of CVE-2021-25501
The vulnerability possesses a CVSS base score of 5.7, indicating a medium severity issue. With low attack complexity and vector being local, the availability impact is low, while confidentiality and integrity impact are rated low and none respectively.
Technical Details of CVE-2021-25501
This section provides detailed technical insights into CVE-2021-25501.
Vulnerability Description
The vulnerability lies in SCloudBnRReceiver within SecTelephonyProvider, prior to SMR Nov-2021 Release 1, enabling untrusted applications to make calls to protected providers.
Affected Systems and Versions
The vulnerability impacts Samsung Mobile Devices running versions Q(10.0) and R(11.0) before SMR Nov-2021 Release 1.
Exploitation Mechanism
The vulnerability allows untrusted applications to call protected providers, potentially leading to unauthorized access and misuse of resources.
Mitigation and Prevention
Below are the steps to mitigate and prevent exploitation of CVE-2021-25501.
Immediate Steps to Take
- Update affected devices to SMR Nov-2021 Release 1 or newer.
- Avoid installing untrusted applications from unknown sources.
Long-Term Security Practices
- Regularly check for security updates from Samsung Mobile.
- Implement app permission reviews to restrict app capabilities.
- Educate users about the risks of installing apps from unverified sources.
Patching and Updates
Stay informed about security advisories and apply patches promptly to ensure protection against known vulnerabilities.