CVE-2020-0115 : What You Need to Know
Learn about CVE-2020-0115, a flaw in Android that allows local privilege escalation by apps becoming default handlers for domains without user interaction. Take immediate steps for mitigation.
Android contains a vulnerability that allows local privilege escalation by bypassing settings. User interaction is not required for exploitation.
Understanding CVE-2020-0115
This CVE identifies a flaw in Android that enables an app to become the default handler for arbitrary domains, potentially leading to local privilege escalation.
What is CVE-2020-0115?
In the PackageManagerService.java component of Android, there is a vulnerability that permits an application to gain control as the default handler for any domain, which could result in local privilege escalation without the need for user interaction.
The Impact of CVE-2020-0115
This vulnerability could allow malicious apps to execute privileged actions without user consent, posing a threat to user data and system security. A successful exploit may lead to an elevation of privilege within the Android system.
Technical Details of CVE-2020-0115
Android-8.1, Android-9, Android-10, and Android-8.0 are impacted by this vulnerability.
Vulnerability Description
The vulnerability lies in the verifyIntentFiltersIfNeeded function of PackageManagerService.java. It enables apps to attain default handler status for any domain, potentially abusing this setting bypass for malicious activities.
Affected Systems and Versions
- Product: Android
- Versions: Android-8.1, Android-9, Android-10, Android-8.0
Exploitation Mechanism
The flaw allows apps to circumvent default handler restrictions, leading to unauthorized control over domains, which can be exploited for local privilege escalation.
Mitigation and Prevention
Actions to mitigate the risks posed by CVE-2020-0115:
Immediate Steps to Take
- Regularly update the Android OS and applications to patch vulnerabilities.
- Avoid granting unnecessary permissions to apps to limit their privileges.
- Install apps only from trusted sources to reduce the risk of malicious exploitation.
Long-Term Security Practices
- Employ security tools and antivirus software to detect and mitigate potential threats.
- Enable system security features such as app verification and sandboxing to enhance protection.
- Stay informed about security updates and best practices to safeguard against evolving threats.
Patching and Updates
- Apply security patches provided by Google as soon as they are released to address known vulnerabilities in Android.