CVE-2021-25460 : What You Need to Know
Learn about CVE-2021-25460, an improper access control vulnerability in Samsung Mobile devices allowing attackers to terminate BlockchainTZService. Find out the impact, affected systems, and mitigation steps.
An improper access control vulnerability in sspExit() in BlockchainTZService prior to SMR Sep-2021 Release 1 allows attackers to terminate BlockchainTZService.
Understanding CVE-2021-25460
This CVE describes an improper access control vulnerability affecting Samsung Mobile devices that can be exploited by attackers to terminate BlockchainTZService.
What is CVE-2021-25460?
CVE-2021-25460 is an improper access control vulnerability in sspExit() in BlockchainTZService, impacting select Q(10.0) and R(11.0) devices prior to SMR Sep-2021 Release 1.
The Impact of CVE-2021-25460
The vulnerability allows attackers to terminate BlockchainTZService, potentially causing disruption and denial of service on affected devices.
Technical Details of CVE-2021-25460
Below are the technical details of the CVE:
Vulnerability Description
The vulnerability stems from improper access control in the sspExit() function of BlockchainTZService prior to SMR Sep-2021 Release 1.
Affected Systems and Versions
- Product: Samsung Mobile Devices
- Vendor: Samsung Mobile
- Affected Versions: Select Q(10.0), R(11.0) devices prior to SMR Sep-2021 Release 1
- Vulnerability Type: Improper Authorization (CWE-285)
Exploitation Mechanism
The vulnerability can be exploited locally with low attack complexity, requiring no user privileges, resulting in a medium severity impact on availability.
Mitigation and Prevention
To mitigate the risks associated with CVE-2021-25460, consider the following:
Immediate Steps to Take
- Monitor vendor security updates for patches addressing this vulnerability.
- Implement network security measures to detect and block potential exploitation attempts.
Long-Term Security Practices
- Regularly update Samsung Mobile devices to the latest SMR versions to ensure protections against known vulnerabilities.
- Conduct security assessments and penetration testing to identify and remediate potential security weaknesses.
Patching and Updates
Apply the latest security patches provided by Samsung Mobile, specifically addressing the improper access control vulnerability in BlockchainTZService.