CVE-2025-47202

Comprehensive Technical Analysis of CVE-2025-47202

1. Vulnerability Assessment and Severity Evaluation

CVE ID: CVE-2025-47202 CVSS Score: 9.1

The vulnerability in question pertains to a lack of length check in the Radio Resource Control (RRC) layer of various Samsung Mobile Processors, Wearable Processors, and Modems. This flaw can lead to out-of-bounds writes, which are a critical type of memory corruption issue. The CVSS score of 9.1 indicates a high severity, reflecting the potential for significant impact if exploited.

Severity Evaluation:

• Confidentiality Impact: High
• Integrity Impact: High
• Availability Impact: High

The high CVSS score is justified by the potential for complete system compromise, including unauthorized access to sensitive data, alteration of system functionality, and denial of service.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Remote Exploitation: An attacker could send specially crafted RRC messages to the affected devices, potentially over a cellular network.
• Local Exploitation: Malicious applications or compromised local services could exploit the vulnerability if they have access to the RRC layer.

Exploitation Methods:

• Buffer Overflow: By sending RRC messages with malformed length fields, an attacker could trigger a buffer overflow, leading to arbitrary code execution or system crashes.
• Denial of Service (DoS): Crafted RRC messages could cause the device to crash or become unresponsive, leading to a denial of service.

3. Affected Systems and Software Versions

Affected Systems:

• Samsung Mobile Processors: Exynos 980, 990, 850, 1080, 2100, 1280, 2200, 1330, 1380, 1480, 2400, 1580
• Samsung Wearable Processors: Exynos 9110, W920, W930, W1000
• Samsung Modems: Modem 5123, Modem 5300, Modem 5400

Software Versions:

• All software versions utilizing the affected RRC layer in the listed processors and modems are potentially vulnerable.

4. Recommended Mitigation Strategies

Immediate Mitigations:

• Patching: Apply the latest security updates from Samsung as soon as they are available.
• Network Monitoring: Implement enhanced monitoring for unusual RRC traffic patterns that may indicate an exploitation attempt.
• Access Control: Restrict access to the RRC layer to trusted applications and services only.

Long-Term Mitigations:

• Code Review: Conduct thorough code reviews and audits to identify and fix similar vulnerabilities in other components.
• Security Training: Provide training for developers on secure coding practices, particularly focusing on input validation and length checks.
• Intrusion Detection Systems (IDS): Deploy IDS to detect and respond to potential exploitation attempts in real-time.

5. Impact on Cybersecurity Landscape

The discovery of CVE-2025-47202 highlights the critical importance of robust input validation and length checks in low-level system components. The vulnerability underscores the need for:

• Enhanced Security in Mobile and Wearable Devices: As these devices become more integrated into daily life, their security becomes paramount.
• Collaborative Efforts: Vendors, researchers, and cybersecurity professionals must collaborate to identify and mitigate such vulnerabilities promptly.
• Proactive Patch Management: Organizations must prioritize timely patching and updates to mitigate the risk of exploitation.

6. Technical Details for Security Professionals

Vulnerability Details:

• Root Cause: The lack of length checks in the RRC layer allows for out-of-bounds writes, which can corrupt memory and lead to arbitrary code execution or system crashes.
• Exploitation Complexity: Moderate to high, depending on the attacker's ability to craft and deliver malicious RRC messages.
• Detection: Anomaly detection systems can be configured to identify unusual RRC traffic patterns. Logs and memory dumps can be analyzed for evidence of out-of-bounds writes.

Mitigation Steps:

1. Update Firmware: Ensure all affected devices are updated with the latest firmware from Samsung.
2. Implement Network Security: Use firewalls and IDS to monitor and filter incoming RRC messages.
3. Regular Audits: Conduct regular security audits and penetration testing to identify and address similar vulnerabilities.

Conclusion: CVE-2025-47202 represents a significant risk to the security of Samsung mobile and wearable devices. Immediate and long-term mitigation strategies are essential to protect against potential exploitation. Collaboration between vendors, researchers, and cybersecurity professionals is crucial to enhance the overall security posture of mobile and wearable technologies.

References:

• Samsung Product Security Updates
• CVE-2025-47202 Details