CVE-2020-26419 : Exploit Details and Defense Strategies

Wireshark 3.4.0 suffers from a memory leak in the dissection engine, leading to a denial of service through packet injection or crafted capture files.

Understanding CVE-2020-26419

This CVE involves a vulnerability in Wireshark version 3.4.0 that can be exploited for denial of service attacks.

What is CVE-2020-26419?

The vulnerability in Wireshark 3.4.0 allows attackers to trigger a denial of service by exploiting a memory leak in the dissection engine through packet injection or crafted capture files.

The Impact of CVE-2020-26419

CVSS Base Score: 3.1 (Low)
Attack Vector: Network
Attack Complexity: High
Privileges Required: None
User Interaction: Required
Availability Impact: Low
Confidentiality Impact: None
Integrity Impact: None
Scope: Unchanged

Technical Details of CVE-2020-26419

Wireshark 3.4.0 vulnerability details and affected systems.

Vulnerability Description

The issue involves a memory leak in the dissection engine of Wireshark 3.4.0, enabling denial of service attacks.

Affected Systems and Versions

Affected Product: Wireshark
Vendor: The Wireshark Foundation
Affected Version: 3.4.0

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting packets or using specially crafted capture files to trigger the memory leak.

Mitigation and Prevention

Protecting systems from CVE-2020-26419 through immediate and long-term measures.

Immediate Steps to Take

Update Wireshark to a patched version.
Avoid opening suspicious capture files.
Monitor network traffic for anomalies.

Long-Term Security Practices

Regularly update software and security patches.
Implement network segmentation to contain potential attacks.

Patching and Updates

Ensure Wireshark is regularly updated with the latest security patches to mitigate the vulnerability.