CVE-2021-46813 : Security Advisory and Response
Learn about CVE-2021-46813, a vulnerability in residual files not being deleted after an update in Huawei's EMUI and Magic UI, potentially affecting system availability. Find out about impact, affected systems, and mitigation steps.
A vulnerability in residual files not being deleted after an update in the ChinaDRM module of Huawei's EMUI and Magic UI may impact availability.
Understanding CVE-2021-46813
What is CVE-2021-46813?
The vulnerability involves residual files not being properly deleted after an update in the ChinaDRM module, potentially leading to availability issues.
The Impact of CVE-2021-46813
Exploiting this vulnerability could affect the availability of the affected systems.
Technical Details of CVE-2021-46813
Vulnerability Description
The flaw stems from residual files not being removed post-update in the ChinaDRM module.
Affected Systems and Versions
Product: EMUI
- Vendor: Huawei
- Version: 11.0.0
Product: Magic UI
- Vendor: Huawei
- Version: 4.0.0
Exploitation Mechanism
The vulnerability can be exploited by malicious actors to impact the availability of the systems.
Mitigation and Prevention
Immediate Steps to Take
- Ensure thorough deletion of residual files after system updates.
- Monitor system availability for any anomalies.
Long-Term Security Practices
- Regularly update systems to the latest versions.
- Implement robust security measures to mitigate similar vulnerabilities.
Patching and Updates
Apply relevant security patches provided by Huawei to address and mitigate the vulnerability.