CVE-2021-0437 : Vulnerability Insights and Analysis
Learn about CVE-2021-0437 impacting Android devices with a double free vulnerability in setPlayPolicy of DrmPlugin.cpp, potentially allowing local privilege escalation without user interaction.
Android devices are impacted by CVE-2021-0437 due to a double free vulnerability in setPlayPolicy of DrmPlugin.cpp. This flaw can result in local escalation of privilege without requiring user interaction.
Understanding CVE-2021-0437
This CVE affects Android devices running various versions, potentially allowing attackers to elevate privileges without user interaction.
What is CVE-2021-0437?
CVE-2021-0437 is an elevation of privilege vulnerability in Android's DrmPlugin.cpp, enabling local attackers to escalate privileges within a privileged process.
The Impact of CVE-2021-0437
The vulnerability poses a significant risk as attackers can exploit it to gain elevated privileges without needing additional execution privileges or user interaction.
Technical Details of CVE-2021-0437
The technical details of CVE-2021-0437 include:
Vulnerability Description
The vulnerability involves a double free issue in setPlayPolicy of DrmPlugin.cpp, which can be exploited for local privilege escalation.
Affected Systems and Versions
Android devices with versions Android-11, Android-8.1, Android-9, and Android-10 are affected by this vulnerability.
Exploitation Mechanism
Attackers can exploit the double free vulnerability in DrmPlugin.cpp to locally escalate privileges within a privileged process, posing a threat to device security.
Mitigation and Prevention
To address CVE-2021-0437, consider the following measures:
Immediate Steps to Take
- Monitor official security bulletins and updates from Google for patches related to this vulnerability.
- Apply relevant security patches provided by the Android operating system.
Long-Term Security Practices
- Implement regular security updates and patches on Android devices to prevent exploitation of known vulnerabilities.
- Employ best security practices to safeguard against privilege escalation attacks.
Patching and Updates
Regularly check for security updates from Android and promptly install them to mitigate potential risks posed by CVE-2021-0437.