CVE-2019-9456 Explained : Impact and Mitigation
Learn about CVE-2019-9456, an Android kernel vulnerability in the Pixel C USB monitor driver that allows for an escalation of privileges without user interaction. Find out how to mitigate and prevent this security risk.
Android kernel in Pixel C USB monitor driver has a vulnerability that could lead to an escalation of privileges, allowing attackers to gain System execution privileges without user interaction.
Understanding CVE-2019-9456
This CVE involves an elevation of privilege vulnerability in the Android kernel affecting the Pixel C USB monitor driver.
What is CVE-2019-9456?
- The vulnerability in the Android kernel's Pixel C USB monitor driver allows for an out-of-bounds write due to a missing bounds check.
- Attackers could exploit this flaw to escalate privileges locally, gaining System execution privileges.
- No user interaction is required for the exploitation of this vulnerability.
The Impact of CVE-2019-9456
- Successful exploitation could result in an attacker gaining elevated privileges at the local level, potentially leading to further system compromise.
Technical Details of CVE-2019-9456
This section provides more technical insights into the vulnerability.
Vulnerability Description
- The vulnerability arises from a missing bounds check in the Pixel C USB monitor driver of the Android kernel, allowing for an out-of-bounds write.
Affected Systems and Versions
- Product: Android
- Version: Android kernel
Exploitation Mechanism
- Attackers can exploit this vulnerability to perform an out-of-bounds write, leading to an escalation of privileges without requiring user interaction.
Mitigation and Prevention
Protecting systems from CVE-2019-9456 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security patches provided by the vendor promptly.
- Monitor for any unusual system behavior that could indicate exploitation attempts.
Long-Term Security Practices
- Regularly update and patch systems to address known vulnerabilities.
- Implement least privilege access controls to limit the impact of potential privilege escalation attacks.
Patching and Updates
- Stay informed about security bulletins and advisories related to the Android kernel and apply patches as soon as they are available.