CVE-2020-27892 : Vulnerability Insights and Analysis
Discover the impact of CVE-2020-27892 on Texas Instruments CC2538 devices with Z-Stack 3.0.1. Learn about the vulnerability, affected systems, exploitation, and mitigation steps.
Texas Instruments CC2538 devices with Z-Stack 3.0.1 are vulnerable to a specific flaw in the Zigbee protocol implementation.
Understanding CVE-2020-27892
This CVE identifies a critical vulnerability in Texas Instruments CC2538 devices running Z-Stack 3.0.1, leading to a crash in zclParseInDiscCmdsRspCmd().
What is CVE-2020-27892?
The Zigbee protocol implementation on Texas Instruments CC2538 devices with Z-Stack 3.0.1 fails to handle ZCL Discover Commands Received Response and ZCL Discover Commands Generated Response messages, resulting in a crash.
The Impact of CVE-2020-27892
The vulnerability allows attackers to potentially exploit the device, leading to denial of service or other malicious activities.
Technical Details of CVE-2020-27892
Texas Instruments CC2538 devices with Z-Stack 3.0.1 are susceptible to a specific flaw in the Zigbee protocol implementation.
Vulnerability Description
The issue arises from the improper processing of ZCL Discover Commands Received Response and ZCL Discover Commands Generated Response messages, causing a crash in zclParseInDiscCmdsRspCmd().
Affected Systems and Versions
- Vendor: Texas Instruments
- Product: CC2538 devices
- Version: Z-Stack 3.0.1
Exploitation Mechanism
Attackers can exploit this vulnerability by sending crafted ZCL messages to the affected device, triggering the crash in zclParseInDiscCmdsRspCmd().
Mitigation and Prevention
Steps to address and prevent the CVE-2020-27892 vulnerability.
Immediate Steps to Take
- Apply vendor-supplied patches or updates to fix the vulnerability.
- Implement network segmentation to limit exposure to potential attacks.
- Monitor network traffic for any suspicious activity.
Long-Term Security Practices
- Regularly update firmware and software to ensure the latest security patches are in place.
- Conduct security assessments and penetration testing to identify and address vulnerabilities proactively.
Patching and Updates
- Texas Instruments may release patches or updates to address the vulnerability. Stay informed about security advisories and apply patches promptly.