CVE-2019-5721 Explained : Impact and Mitigation

Wireshark versions 2.4.0 to 2.4.11 had a vulnerability in the ENIP dissector that could lead to crashes. The issue was resolved by enhancing memory management to prevent use-after-free occurrences.

Understanding CVE-2019-5721

From Wireshark versions 2.4.0 to 2.4.11, there was a potential issue of the ENIP dissector crashing. Modifications were made to improve memory management and prevent use-after-free.

What is CVE-2019-5721?

Wireshark versions 2.4.0 to 2.4.11 were susceptible to crashes due to a vulnerability in the ENIP dissector. The problem was addressed by enhancing memory management.

The Impact of CVE-2019-5721

The vulnerability could lead to crashes in Wireshark, affecting the reliability and functionality of the software.

Technical Details of CVE-2019-5721

Wireshark versions 2.4.0 to 2.4.11 had a vulnerability in the ENIP dissector that could crash the software.

Vulnerability Description

The issue stemmed from the ENIP dissector, potentially causing crashes in Wireshark versions 2.4.0 to 2.4.11.

Affected Systems and Versions

Product: Wireshark
Versions: 2.4.0 to 2.4.11

Exploitation Mechanism

The vulnerability could be exploited by crafting a malicious ENIP packet to trigger the crash in Wireshark.

Mitigation and Prevention

Immediate Steps to Take:

Update Wireshark to the latest version.
Avoid opening suspicious ENIP packets. Long-Term Security Practices:
Regularly update software to patch known vulnerabilities.
Implement network segmentation to contain potential threats.
Conduct regular security audits to identify and address vulnerabilities.
Educate users on safe browsing practices and potential risks.
Monitor network traffic for any unusual or malicious activities.
Stay informed about security advisories and updates from Wireshark.
Consider using intrusion detection systems to enhance network security.
Employ strong authentication mechanisms to prevent unauthorized access.
Backup critical data to mitigate the impact of security incidents.
Engage in threat intelligence sharing to stay ahead of emerging threats.

Patching and Updates

Ensure Wireshark is regularly updated to the latest version to mitigate known vulnerabilities and enhance software security.