CVE-2019-1993 : Security Advisory and Response

Android devices running versions 8.0, 8.1, and 9 are susceptible to an elevation of privilege vulnerability due to an integer overflow in btif_hd.cc's register_app function.

Understanding CVE-2019-1993

This CVE entry highlights a critical vulnerability in Android devices that could potentially lead to local privilege escalation without the need for additional execution privileges.

What is CVE-2019-1993?

The vulnerability stems from an integer overflow in the register_app function of btif_hd.cc, resulting in memory corruption. Exploitation of this flaw could allow attackers to escalate their privileges locally on affected Android devices.

The Impact of CVE-2019-1993

The vulnerability poses a significant risk as it enables attackers to gain elevated privileges on the device without requiring user interaction, potentially leading to unauthorized access and control.

Technical Details of CVE-2019-1993

This section delves into the technical aspects of the CVE entry.

Vulnerability Description

The vulnerability in btif_hd.cc's register_app function allows for an integer overflow, leading to memory corruption and the subsequent risk of local privilege escalation on Android devices.

Affected Systems and Versions

Product: Android
Affected Versions: Android-8.0, Android-8.1, Android-9

Exploitation Mechanism

Attackers can exploit the integer overflow in btif_hd.cc to corrupt memory and potentially escalate privileges locally on vulnerable Android devices.

Mitigation and Prevention

Protecting systems from CVE-2019-1993 requires immediate action and long-term security measures.

Immediate Steps to Take

Apply security patches provided by the device manufacturer promptly.
Monitor official sources for updates and security advisories related to this vulnerability.

Long-Term Security Practices

Implement strict access controls and user privilege management on Android devices.
Regularly update and patch devices to mitigate known vulnerabilities and enhance overall security.
Employ security solutions that can detect and prevent privilege escalation attempts.
Educate users on safe browsing habits and the importance of keeping devices up to date.

Patching and Updates

Regularly check for security updates from Android and apply patches as soon as they are available to mitigate the risk of exploitation.