CVE-2019-13267 : Vulnerability Insights and Analysis

TP-Link Archer C3200 V1 and Archer C2 V1 devices exhibit Insufficient Compartmentalization between host and guest networks, allowing unauthorized data transfer. The vulnerability involves the IGMP protocol and can be exploited by controlling data within the Group IP field.

Understanding CVE-2019-13267

This CVE identifies a security flaw in TP-Link Archer C3200 V1 and Archer C2 V1 devices related to network compartmentalization.

What is CVE-2019-13267?

The vulnerability allows data transfer from the host network to the guest network through manipulation of the IGMP protocol, potentially leading to unauthorized access and data leakage.

The Impact of CVE-2019-13267

The lack of proper network isolation can result in unauthorized data access and potential security breaches, compromising the confidentiality of information.

Technical Details of CVE-2019-13267

The technical aspects of the vulnerability are crucial for understanding its implications and potential risks.

Vulnerability Description

The flaw arises from inadequate separation between host and guest networks, enabling data transfer controlled by the sender through the IGMP protocol.

Affected Systems and Versions

TP-Link Archer C3200 V1
TP-Link Archer C2 V1

Exploitation Mechanism

Sender joins and leaves an IGMP group to initiate data transfer
Router generates an IGMP Membership Query packet containing Group IP
Packet transmitted to both host and guest networks
Data transfer occurs within the Group IP field controlled by the sender

Mitigation and Prevention

Addressing CVE-2019-13267 requires immediate actions and long-term security measures to enhance network protection.

Immediate Steps to Take

Disable IGMP snooping if not required
Implement VLANs to segregate network traffic
Regularly monitor network activity for suspicious behavior

Long-Term Security Practices

Conduct regular security audits and assessments
Keep network devices updated with the latest firmware
Educate users on best practices for network security

Patching and Updates

Apply firmware updates provided by TP-Link to address the vulnerability