CVE-2019-17518 : Security Advisory and Response

An issue has been discovered in the Dialog Semiconductor SDK version up to 1.0.14.1081 for DA1468x devices, specifically related to the Bluetooth Low Energy implementation. This vulnerability enables attackers within radio range to manipulate link layer packets, resulting in a buffer overflow by exploiting the system's inability to handle payloads larger than expected. As a result, certain devices such as the August Smart Lock are impacted by this security flaw.

Understanding CVE-2019-17518

This CVE identifies a vulnerability in the Bluetooth Low Energy implementation on Dialog Semiconductor SDK affecting DA1468x devices.

What is CVE-2019-17518?

The vulnerability allows attackers within radio range to cause a buffer overflow by sending crafted packets with payloads larger than expected.

The Impact of CVE-2019-17518

Attackers can manipulate link layer packets, leading to a buffer overflow on affected devices.
Devices like the August Smart Lock are susceptible to exploitation.

Technical Details of CVE-2019-17518

This section provides technical insights into the vulnerability.

Vulnerability Description

The Bluetooth Low Energy implementation on Dialog Semiconductor SDK up to version 1.0.14.1081 for DA1468x devices is susceptible to buffer overflow due to inadequate payload length validation.

Affected Systems and Versions

Dialog Semiconductor SDK up to version 1.0.14.1081 for DA1468x devices

Exploitation Mechanism

Attackers exploit the system's inability to handle payloads larger than expected, causing a buffer overflow.

Mitigation and Prevention

Protecting systems from the CVE-2019-17518 vulnerability is crucial.

Immediate Steps to Take

Update affected systems to the latest patched versions.
Implement network segmentation to limit exposure to potential attackers.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update software and firmware to address security vulnerabilities.
Conduct security assessments and penetration testing to identify and remediate weaknesses.
Educate users on best practices for secure device usage.

Patching and Updates

Dialog Semiconductor SDK users should apply patches provided by the vendor to mitigate the vulnerability.