CVE-2019-13269 : Exploit Details and Defense Strategies

Edimax BR-6208AC V1 devices exhibit a vulnerability due to inadequate compartmentalization between the host and guest networks, allowing data to be transmitted across the router using the same Transaction ID field.

Understanding CVE-2019-13269

This CVE involves a flaw in the Edimax BR-6208AC V1 router that enables data encoding to be sent across the router using the 32-bit Transaction ID field.

What is CVE-2019-13269?

The vulnerability in Edimax BR-6208AC V1 devices arises from the router mistakenly sending NAK messages to both the host and guest networks with the same Transaction ID, allowing unauthorized data transmission.

The Impact of CVE-2019-13269

This vulnerability could potentially lead to unauthorized access and data leakage between the host and guest networks, compromising network security and privacy.

Technical Details of CVE-2019-13269

The technical aspects of this CVE provide insight into the vulnerability's description, affected systems, versions, and the exploitation mechanism.

Vulnerability Description

Edimax BR-6208AC V1 lacks proper compartmentalization between the host and guest networks
Router erroneously sends NAK messages to both networks using the same Transaction ID

Affected Systems and Versions

Product: Edimax BR-6208AC V1
Version: Not applicable

Exploitation Mechanism

DHCP Request sent to the router includes a Transaction ID field
Router responds with ACK or NAK message
Router mistakenly sends NAK to both host and guest networks with the same Transaction ID

Mitigation and Prevention

Protecting systems from CVE-2019-13269 involves immediate steps and long-term security practices.

Immediate Steps to Take

Update router firmware to the latest version
Implement network segmentation to isolate host and guest networks
Monitor network traffic for any suspicious activities

Long-Term Security Practices

Regularly audit network configurations and access controls
Conduct security training for network administrators and users
Employ intrusion detection and prevention systems

Patching and Updates

Apply patches provided by Edimax to address the vulnerability
Stay informed about security advisories and updates from the vendor