CVE-2020-0444 : Exploit Details and Defense Strategies

Android kernel has a vulnerability in audit_free_lsm_field of auditfilter.c, potentially leading to local privilege escalation without additional privileges.

Understanding CVE-2020-0444

What is CVE-2020-0444?

This CVE identifies a flaw in the Android kernel that could allow an attacker to elevate privileges locally without requiring extra execution rights.

The Impact of CVE-2020-0444

The security issue could lead to local escalation of privilege without the need for user interaction, posing a risk of unauthorized access.

Technical Details of CVE-2020-0444

Vulnerability Description

Located in auditfilter.c, the vulnerability involves a logic error leading to bad kfree in audit_data_to_entry.

Affected Systems and Versions

Product: Android
Versions: Android kernel

Exploitation Mechanism

The vulnerability can be exploited locally to escalate privileges without additional execution rights being required.

Mitigation and Prevention

Immediate Steps to Take

Apply patches provided by the vendor promptly.
Monitor security bulletins for updates and advisories.

Long-Term Security Practices

Implement strict access controls and least privilege principles.
Conduct regular security assessments and audits to detect and mitigate vulnerabilities.

Patching and Updates

Regularly update systems with the latest security patches to address known vulnerabilities.