CVE-2019-2213 : Security Advisory and Response
Learn about CVE-2019-2213, a critical Android kernel vulnerability allowing local privilege escalation without user interaction. Find mitigation steps and prevention measures.
Android kernel's binder_free_transaction function has a use-after-free vulnerability due to a race condition, potentially leading to local privilege escalation without additional execution privileges.
Understanding CVE-2019-2213
This CVE involves a critical vulnerability in the Android kernel that could allow attackers to escalate privileges without user interaction.
What is CVE-2019-2213?
The binder_free_transaction function in the binder.c file of the Android kernel is susceptible to a use-after-free issue triggered by a race condition. This flaw could enable a local attacker to escalate privileges without requiring additional execution privileges, and exploitation does not depend on user interaction.
The Impact of CVE-2019-2213
The vulnerability poses a significant risk of local privilege escalation on affected Android systems, potentially leading to unauthorized access and control.
Technical Details of CVE-2019-2213
This section provides detailed technical insights into the vulnerability.
Vulnerability Description
The binder_free_transaction function in binder.c is prone to a use-after-free vulnerability due to a race condition, allowing for potential privilege escalation.
Affected Systems and Versions
- Product: Android
- Versions: Android kernel
Exploitation Mechanism
The vulnerability can be exploited by leveraging the race condition in the binder_free_transaction function, enabling attackers to escalate privileges locally.
Mitigation and Prevention
Protecting systems from CVE-2019-2213 requires immediate actions and long-term security measures.
Immediate Steps to Take
- Apply security patches provided by the vendor promptly.
- Monitor security bulletins and updates from official sources.
Long-Term Security Practices
- Implement least privilege access controls to limit potential damage from privilege escalation attacks.
- Conduct regular security assessments and audits to identify and address vulnerabilities proactively.
Patching and Updates
Regularly update the Android kernel to the latest version to ensure that security patches addressing CVE-2019-2213 are applied.