CVE-2018-7327 : Vulnerability Insights and Analysis

Wireshark versions 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12 were affected by an infinite loop issue in the packet-openflow_v6.c file, which has been resolved by implementing proper validation of property lengths.

Understanding CVE-2018-7327

This CVE entry addresses a vulnerability in Wireshark that could lead to an infinite loop due to inadequate validation of property lengths.

What is CVE-2018-7327?

The vulnerability in Wireshark versions 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12 could result in an infinite loop within the packet-openflow_v6.c file.

The Impact of CVE-2018-7327

The vulnerability could potentially cause denial of service (DoS) by consuming excessive system resources and impacting the performance of Wireshark.

Technical Details of CVE-2018-7327

Wireshark's vulnerability is detailed below:

Vulnerability Description

The issue stemmed from an infinite loop in the packet-openflow_v6.c file due to inadequate validation of property lengths.

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 crafting a malicious network packet that triggers the infinite loop, leading to a DoS condition.

Mitigation and Prevention

To address CVE-2018-7327, consider the following steps:

Immediate Steps to Take

Update Wireshark to versions 2.4.5 or later for 2.4.x branch, and versions 2.2.13 or later for 2.2.x branch.
Monitor network traffic for any signs of abnormal behavior that could indicate exploitation.

Long-Term Security Practices

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

Patching and Updates

Apply patches provided by Wireshark promptly to mitigate the vulnerability and enhance overall system security.