CVE-2017-7243 : Security Advisory and Response

Eclipse tinydtls 0.8.2 for Eclipse IoT is vulnerable to a remote denial of service attack by sending a "Change cipher spec" packet without pre-handshake.

Understanding CVE-2017-7243

In Eclipse IoT, version 0.8.2 of tinydtls is susceptible to a remote denial of service attack.

What is CVE-2017-7243?

The vulnerability in Eclipse tinydtls 0.8.2 allows remote attackers to cause a denial of service (DTLS peer crash) by sending a "Change cipher spec" packet without pre-handshake.

The Impact of CVE-2017-7243

Attackers can exploit this vulnerability to crash DTLS peers remotely.

Technical Details of CVE-2017-7243

Eclipse tinydtls 0.8.2 vulnerability details.

Vulnerability Description

Sending a specific packet without the required pre-handshake can lead to a denial of service.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Version: 0.8.2

Exploitation Mechanism

Attackers exploit the vulnerability by sending a "Change cipher spec" packet without performing the necessary pre-handshake.

Mitigation and Prevention

Steps to address and prevent CVE-2017-7243.

Immediate Steps to Take

Update to a patched version of tinydtls to mitigate the vulnerability.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update software and firmware to address security vulnerabilities.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Apply security patches and updates provided by Eclipse IoT to fix the vulnerability.