CVE-2019-18614 : Exploit Details and Defense Strategies

A vulnerability exists in the Cypress CYW20735 evaluation board that allows an attacker to trigger a buffer overflow by exceeding 384 bytes of data.

Understanding CVE-2019-18614

This CVE describes a buffer overflow vulnerability in the Cypress CYW20735 evaluation board due to improper buffer size configurations.

What is CVE-2019-18614?

The vulnerability occurs when data exceeding 384 bytes is copied, leading to a buffer overflow. Attackers can exploit this issue by sending packets over the air or acting as an unprivileged local user.

The Impact of CVE-2019-18614

The vulnerability allows attackers to trigger a buffer overflow, potentially leading to unauthorized access or denial of service attacks.

Technical Details of CVE-2019-18614

This section provides technical details about the vulnerability.

Vulnerability Description

The buffer overflow is caused by the BLOC buffer size set to 384 bytes while other configurations remain at 1092 bytes, allowing attackers to trigger the overflow.

Affected Systems and Versions

Cypress CYW20735 evaluation board
WICED Studio versions 6.2 and 6.4

Exploitation Mechanism

Attackers can exploit the vulnerability by sending packets over the air or establishing a local connection to trigger the buffer overflow.

Mitigation and Prevention

Protecting systems from CVE-2019-18614 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update to the latest firmware or software patch provided by Cypress.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update firmware and software to patch known vulnerabilities.
Conduct security assessments and penetration testing to identify and address weaknesses.
Educate users and administrators about secure practices to prevent exploitation.

Patching and Updates

Apply patches and updates released by Cypress to address the buffer overflow vulnerability in the CYW20735 evaluation board.