CVE-2017-6467 : Vulnerability Insights and Analysis

Wireshark 2.2.0 to 2.2.4 and 2.0.0 to 2.0.10 were affected by an infinite loop issue in the Netscaler file parser, triggered by malformed capture files. The problem has been resolved by adjusting file size limitations.

Understanding CVE-2017-6467

This CVE entry addresses a vulnerability in Wireshark versions 2.2.0 to 2.2.4 and 2.0.0 to 2.0.10 related to an infinite loop in the Netscaler file parser.

What is CVE-2017-6467?

In Wireshark versions 2.2.0 to 2.2.4 and 2.0.0 to 2.0.10, a vulnerability allowed for an infinite loop in the Netscaler file parser due to malformed capture files.

The Impact of CVE-2017-6467

The vulnerability could lead to a denial of service (DoS) condition by causing the Wireshark application to enter an infinite loop, consuming excessive resources.

Technical Details of CVE-2017-6467

Wireshark's Netscaler file parser vulnerability is detailed below:

Vulnerability Description

The issue stemmed from a flaw in the file parser that mishandled certain types of capture files, leading to an infinite loop.

Affected Systems and Versions

Wireshark versions 2.2.0 to 2.2.4
Wireshark versions 2.0.0 to 2.0.10

Exploitation Mechanism

Malicious actors could exploit this vulnerability by crafting a specially designed capture file to trigger the infinite loop in the Netscaler file parser.

Mitigation and Prevention

To address CVE-2017-6467, consider the following steps:

Immediate Steps to Take

Update Wireshark to the latest patched version.
Avoid opening untrusted capture files.
Monitor vendor advisories for any additional guidance.

Long-Term Security Practices

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

Patching and Updates

Ensure timely installation of security patches and updates provided by Wireshark to mitigate the risk of exploitation.