CVE-2019-13271 Information

Description

Edimax BR-6208AC V1 devices have Insufficient Compartmentalization between a host network and a guest network that are established by the same device. They forward ARP requests which are sent as broadcast packets between the host and the guest networks. To use this leakage as a direct covert channel the sender can trivially issue an ARP request to an arbitrary computer on the network. (In general some routers restrict ARP forwarding only to requests destined for the network’s subnet mask but these routers did not restrict this traffic in any way. Depending on this factor one must use either the lower 8 bits of the IP address or the entire 32 bits as the data payload.)

CVSS Vector

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://orenlab.sise.bgu.ac.il/publications/CrossRouter https://www.usenix.org/system/files/woot19-paper_ovadia.pdf

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8