Vulnerability CVE-2019-13266


Published: 2019-08-27

Description:
TP-Link Archer C3200 V1 and Archer C2 V1 devices have Insufficient Compartmentalization between a host network and a guest network that are established by the same device. A DHCP Request is sent to the router with a certain Transaction ID field. Following the DHCP protocol, the router responds with an ACK or NAK message. Studying the NAK case revealed that the router erroneously sends the NAK to both Host and Guest networks with the same Transaction ID as found in the DHCP Request. This allows encoding of data to be sent cross-router into the 32-bit Transaction ID field.

Type:

CWE-20

(Improper Input Validation)

CVSS2 => (AV:A/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5.8/10
6.4/10
6.5/10
Exploit range
Attack complexity
Authentication
Adjacent network
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Tp-link -> Archer c2 v1 firmware 
Tp-link -> Archer c3200 v1 firmware 

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

Copyright 2020, cxsecurity.com

 

Back to Top