CVE-2017-6780 Denial of service in Cisco IoT Field Network Director
Unauthenticated remote attackers can cause a denial of service by sending high-rate TCP packets, exhausting memory and forcing device restarts.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-6780?
CVE-2017-6780 is a high-severity denial of service vulnerability in Cisco IoT Field Network Director, published on 7 Sep 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the TCP throttling process for Cisco IoT Field Network Director (IoT-FND) could allow an unauthenticated, remote attacker to cause the system to consume additional memory, eventually forcing the device to restart, aka Memory Exhaustion. The vulnerability is due to insufficient rate-limiting protection. An attacker could exploit this vulnerability by sending a high rate of TCP packets to a specific group of open listening ports on a targeted device. An exploit could allow the attacker to cause the system to consume additional memory. If enough available memory is consumed, the system will restart, creating a temporary denial of service (DoS) condition. The DoS condition will end after the device has finished the restart process. This vulnerability affects the following Cisco products: Connected Grid Network Management System, if running a software release prior to IoT-FND Release 4.0; IoT Field Network Director, if running a software release prior to IoT-FND Release 4.0. Cisco Bug IDs: CSCvc77164.
Which versions are affected by CVE-2017-6780?
It affects 2 products.
Products include Cisco Connected Grid Network Management System, Cisco Iot Field Network Director.
How do I fix CVE-2017-6780?
No fix has been published for CVE-2017-6780 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2017-6780 being exploited?
There is no known exploitation of CVE-2017-6780 in the wild and no public exploit code.
Other vulnerabilities in Cisco IoT Field Network Director
Sources
Also known as GHSA-858q-mfhq-6h9q.