CVE-2017-11580 : What You Need to Know

Blipcare Wifi blood pressure monitor BP700 10.1 devices are vulnerable to a Denial of Service attack due to memory corruption when processing HTTP requests.

Understanding CVE-2017-11580

What is CVE-2017-11580?

The vulnerability in Blipcare Wifi blood pressure monitor BP700 10.1 devices allows attackers to cause a Denial of Service by sending a large string as part of an HTTP request, leading to memory corruption.

The Impact of CVE-2017-11580

The vulnerability can render the device unresponsive when connected to the device's open wireless connection, affecting its functionality and responsiveness.

Technical Details of CVE-2017-11580

Vulnerability Description

Sending a large string in any HTTP header can cause memory corruption and lead to a Denial of Service condition.

Affected Systems and Versions

Product: Blipcare Wifi blood pressure monitor BP700 10.1
Vendor: Blipcare
Versions: All versions

Exploitation Mechanism

Due to limited memory (256k) in the Wi-Fi module, incorrect string copying operations like memcpy or strcpy can overflow memory, causing the device to stop responding.

Mitigation and Prevention

Immediate Steps to Take

Avoid connecting the device to untrusted networks.
Implement network segmentation to isolate vulnerable devices.
Regularly update firmware to patch known vulnerabilities.

Long-Term Security Practices

Conduct regular security assessments and penetration testing.
Educate users on secure device usage and best practices.

Patching and Updates

Apply manufacturer-released patches promptly to address security flaws.