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CVE-2019-2054 : Exploit Details and Defense Strategies

Learn about CVE-2019-2054, a vulnerability in the Android kernel allowing seccomp bypass for local privilege escalation. Find mitigation steps and update recommendations here.

Android Kernel Seccomp Bypass Vulnerability

Understanding CVE-2019-2054

A vulnerability in the Android kernel prior to version 4.8 could allow for a seccomp bypass, leading to the escalation of local privilege without additional execution privileges.

What is CVE-2019-2054?

        The vulnerability arises from seccomp policies allowing the use of ptrace, enabling privilege escalation without user interaction.
        The affected product is Android, specifically the Android kernel.

The Impact of CVE-2019-2054

        Successful exploitation could result in the escalation of local privilege without the need for additional execution privileges.

Technical Details of CVE-2019-2054

Vulnerability Description

        Before kernel version 4.8, the seccomp implementation may be vulnerable to a bypass due to policies allowing ptrace usage.

Affected Systems and Versions

        Product: Android
        Versions: Android kernel

Exploitation Mechanism

        The vulnerability allows for the escalation of local privilege without requiring additional execution privileges.

Mitigation and Prevention

Immediate Steps to Take

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

Long-Term Security Practices

        Regularly update the Android kernel to the latest version.
        Implement strict security policies to limit privilege escalation.

Patching and Updates

        Keep the Android kernel up to date with the latest security patches.

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