CVE-2019-2017 : Vulnerability Insights and Analysis

A potential issue has been discovered in the function rw_t2t_handle_tlv_detect_rsp within the file rw_t2t_ndef.cc, leading to an out-of-bound write vulnerability affecting various Android versions.

Understanding CVE-2019-2017

This CVE involves an elevation of privilege vulnerability in Android versions 7.0 to 9, allowing attackers to potentially escalate privileges locally without additional execution privileges.

What is CVE-2019-2017?

The vulnerability stems from a lack of bounds checking in the rw_t2t_handle_tlv_detect_rsp function, enabling an out-of-bound write that could be exploited for local privilege escalation.

The Impact of CVE-2019-2017

Attackers could exploit this vulnerability to escalate privileges locally without requiring additional execution privileges.
User interaction is necessary for successful exploitation.

Technical Details of CVE-2019-2017

This section provides more technical insights into the vulnerability.

Vulnerability Description

The issue arises from a missing bounds check in rw_t2t_handle_tlv_detect_rsp, potentially leading to an out-of-bound write.

Affected Systems and Versions

The following Android versions are affected:

Android 7.0
Android 7.1.1
Android 7.1.2
Android 8.0
Android 8.1
Android 9

Exploitation Mechanism

Attackers can exploit the vulnerability by leveraging the lack of bounds checking to perform a local privilege escalation.

Mitigation and Prevention

To address CVE-2019-2017, consider the following mitigation strategies.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Educate users about potential social engineering tactics that could lead to exploitation.

Long-Term Security Practices

Implement regular security training for users to recognize and report suspicious activities.
Employ defense-in-depth strategies to mitigate the impact of potential vulnerabilities.

Patching and Updates

Stay informed about security bulletins and updates from the Android platform.
Regularly update systems and applications to ensure the latest security patches are in place.