CVE-2019-13265
To use this leakage as a direct covert channel, the sender can trivially issue an ARP request to an arbitrary computer on the network.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.17%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
D-link DIR-825AC G1 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 3.1
- 8.8 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.17% probability · 66th percentile
- CISA KEV
- Not listed
- Affected
- dlink/dir-825\/ac g1 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.