CVE-2018-18225 : What You Need to Know

Wireshark versions 2.6.0 to 2.6.3 had a vulnerability in the CoAP dissector that could lead to crashes. The issue was resolved by implementing a fix in the packet-coap.c file.

Understanding CVE-2018-18225

This CVE entry pertains to a vulnerability in Wireshark versions 2.6.0 to 2.6.3 related to the CoAP dissector.

What is CVE-2018-18225?

Between versions 2.6.0 and 2.6.3 of Wireshark, there were instances where the CoAP dissector could experience crashes. However, this issue was resolved in the epan/dissectors/packet-coap.c file by introducing a fix that accurately calculates the piv length.

The Impact of CVE-2018-18225

The vulnerability could potentially lead to crashes in Wireshark instances utilizing the CoAP dissector.

Technical Details of CVE-2018-18225

Wireshark vulnerability details and impact.

Vulnerability Description

The CoAP dissector in Wireshark versions 2.6.0 to 2.6.3 was susceptible to crashes due to incorrect piv length calculations. The issue was addressed by fixing the computation in the packet-coap.c file.

Affected Systems and Versions

Wireshark versions 2.6.0 to 2.6.3

Exploitation Mechanism

Attackers could exploit this vulnerability by crafting malicious CoAP packets to trigger crashes in Wireshark instances.

Mitigation and Prevention

Protecting systems from CVE-2018-18225.

Immediate Steps to Take

Update Wireshark to a patched version that includes the fix for the CoAP dissector vulnerability.
Monitor network traffic for any signs of exploitation related to CoAP packets.

Long-Term Security Practices

Regularly update Wireshark and other network monitoring tools to mitigate potential vulnerabilities.
Implement network segmentation to limit the impact of any successful exploitation.

Patching and Updates

Apply the latest patches and updates provided by Wireshark to ensure the CoAP dissector vulnerability is addressed.