CVE-2018-7336 Explained : Impact and Mitigation

Wireshark versions ranging from 2.4.0 to 2.4.4, as well as from 2.2.0 to 2.2.12, experienced a potential crash of the FCP protocol dissector. The issue was addressed by updating the code in epan/dissectors/packet-fcp.c to include a check for a NULL pointer.

Understanding CVE-2018-7336

This CVE entry pertains to a vulnerability in Wireshark versions that could lead to a crash of the FCP protocol dissector.

What is CVE-2018-7336?

CVE-2018-7336 is a vulnerability in Wireshark versions 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12 that could potentially cause a crash in the FCP protocol dissector.

The Impact of CVE-2018-7336

The vulnerability could allow an attacker to cause a denial of service by crashing the FCP protocol dissector in affected Wireshark versions.

Technical Details of CVE-2018-7336

Wireshark versions 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12 were affected by this vulnerability.

Vulnerability Description

The FCP protocol dissector in the mentioned Wireshark versions could crash due to a NULL pointer issue.

Affected Systems and Versions

Wireshark versions 2.4.0 to 2.4.4
Wireshark versions 2.2.0 to 2.2.12

Exploitation Mechanism

An attacker could exploit this vulnerability by sending specially crafted network packets to the affected Wireshark versions, leading to a crash in the FCP protocol dissector.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of CVE-2018-7336.

Immediate Steps to Take

Update Wireshark to the latest patched version that addresses the vulnerability.
Monitor network traffic for any signs of exploitation.

Long-Term Security Practices

Regularly update Wireshark and other software to mitigate known vulnerabilities.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Apply security patches provided by Wireshark promptly to ensure protection against known vulnerabilities.