CVE-2018-19860 : What You Need to Know
Learn about CVE-2018-19860 affecting Nexus 5 BCM4335C0, Raspberry Pi 3 BCM43438A1, and other devices with Broadcom firmware pre-summer 2014. Find out the impact, affected systems, and mitigation steps.
The Nexus 5 BCM4335C0 and Raspberry Pi 3 BCM43438A1, along with other devices running Broadcom firmware before summer 2014, are affected by a vulnerability allowing unrestricted LMP command execution.
Understanding CVE-2018-19860
This CVE involves a vulnerability in Broadcom firmware that could lead to the execution of specific memory contents when receiving an LMP command.
What is CVE-2018-19860?
The vulnerability allows for unrestricted LMP command execution, resulting in the execution of specific memory contents upon receiving an LMP command, such as an HCI command.
The Impact of CVE-2018-19860
The vulnerability poses a risk of unauthorized execution of commands and potential exploitation of the affected devices.
Technical Details of CVE-2018-19860
Broadcom firmware before summer 2014 on Nexus 5 BCM4335C0 (manufactured on December 11, 2012) and Raspberry Pi 3 BCM43438A1 (manufactured on June 2, 2014) is affected.
Vulnerability Description
The vulnerability arises from the improper restriction of LMP commands, leading to the execution of specific memory contents upon receiving an LMP command.
Affected Systems and Versions
- Nexus 5 BCM4335C0 manufactured on December 11, 2012
- Raspberry Pi 3 BCM43438A1 manufactured on June 2, 2014
- Unspecified other devices running Broadcom firmware before summer 2014
Exploitation Mechanism
The vulnerability allows for unrestricted LMP command execution, enabling the execution of specific memory contents upon receiving an LMP command.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent the exploitation of this vulnerability.
Immediate Steps to Take
- Apply security patches provided by the device manufacturers.
- Monitor for any unusual activities on the affected devices.
Long-Term Security Practices
- Regularly update firmware and software to mitigate potential vulnerabilities.
- Implement network segmentation to limit the impact of security breaches.
Patching and Updates
- Stay informed about security updates and patches released by Broadcom and other relevant vendors.