CVE-2019-13269
This allows encoding of data to be sent cross-router into the 32-bit Transaction ID field.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.91%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Edimax BR-6208AC 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.
- CVSS 3.0
- 8.8 HIGHCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.91% probability · 58th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- edimax/br-6208ac v1 firmware
- Source
- cve@mitre.org
References
- https://orenlab.sise.bgu.ac.il/publications/CrossRouterExploit, Third Party Advisory
- https://www.usenix.org/system/files/woot19-paper_ovadia.pdfThird Party Advisory
- https://orenlab.sise.bgu.ac.il/publications/CrossRouterExploit, Third Party Advisory
- https://www.usenix.org/system/files/woot19-paper_ovadia.pdfThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.