CVE-2019-5307 : Vulnerability Insights and Analysis
Learn about CVE-2019-5307 affecting Huawei P30 and P30 Pro models, allowing attackers to manipulate GUTIs or obtain IMSIs through message replay attacks. Find mitigation steps and preventive measures.
Huawei 4G LTE devices, namely P30 models prior to ELE-AL00 9.1.0.162(C01E160R1P12/C01E160R2P1) and P30 Pro models prior to VOG-AL00 9.1.0.162(C01E160R1P12/C01E160R2P1), have been identified as having a vulnerability related to message replay. This vulnerability allows attackers to manipulate GUTIs or obtain IMSIs under specific conditions.
Understanding CVE-2019-5307
This CVE involves a message replay vulnerability in Huawei 4G LTE devices, affecting specific versions of P30 and P30 Pro models.
What is CVE-2019-5307?
The vulnerability in Huawei 4G LTE devices allows attackers to exploit a less stringent check on the NAS message sequence number, enabling message replay attacks to manipulate GUTIs or obtain IMSIs.
The Impact of CVE-2019-5307
The vulnerability poses a security risk as attackers can create a malicious base station and replay specific messages to compromise user data and network integrity.
Technical Details of CVE-2019-5307
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability allows attackers to replay GUTI reallocation command messages to manipulate GUTIs or replay Identity request messages to obtain IMSIs.
Affected Systems and Versions
- Affected Devices: Huawei P30 and P30 Pro models
- Vulnerable Versions: Versions before ELE-AL00 9.1.0.162(C01E160R1P12/C01E160R2P1) and VOG-AL00 9.1.0.162(C01E160R1P12/C01E160R2P1)
Exploitation Mechanism
Attackers can exploit the less stringent check on the NAS message sequence number to replay specific messages and manipulate user data.
Mitigation and Prevention
Protecting against CVE-2019-5307 involves immediate and long-term security measures.
Immediate Steps to Take
- Update affected devices to the latest firmware versions provided by Huawei.
- Monitor network traffic for any suspicious activity that may indicate exploitation of the vulnerability.
Long-Term Security Practices
- Implement network segmentation to isolate critical devices from potential attacks.
- Conduct regular security audits and penetration testing to identify and address vulnerabilities.
Patching and Updates
- Apply security patches and updates released by Huawei to address the vulnerability and enhance device security.