CVE-2019-1700 Denial of service in Cisco Firepower Extensible Operating System (FXOS)
An adjacent attacker can cause a denial of service on Cisco Firepower 9000 network modules by sending crafted packets, requiring manual intervention to recover.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-1700?
CVE-2019-1700 is a medium-severity denial of service vulnerability in Cisco Firepower Extensible Operating System (FXOS), published on 21 Feb 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability in field-programmable gate array (FPGA) ingress buffer management for the Cisco Firepower 9000 Series with the Cisco Firepower 2-port 100G double-width network module (PID: FPR9K-DNM-2X100G) could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition. Manual intervention may be required before a device will resume normal operations. The vulnerability is due to a logic error in the FPGA related to the processing of different types of input packets. An attacker could exploit this vulnerability by being on the adjacent subnet and sending a crafted sequence of input packets to a specific interface on an affected device. A successful exploit could allow the attacker to cause a queue wedge condition on the interface. When a wedge occurs, the affected device will stop processing any additional packets that are received on the wedged interface. Version 2.2 is affected.
Weakness: CWE-399
Which versions are affected by CVE-2019-1700?
It affects 1 product.
Products include Cisco Firepower 9000 Firmware.
How do I fix CVE-2019-1700?
No fix has been published for CVE-2019-1700 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-2019-1700 being exploited?
There is no known exploitation of CVE-2019-1700 in the wild and no public exploit code.
Other vulnerabilities in Cisco Firepower Extensible Operating System (FXOS)
- CVE-2018-0304 Memory corruption in Cisco FXOS and NX-OS unknown
- CVE-2018-0308 Memory corruption in Cisco FXOS and NX-OS unknown
- CVE-2018-0312 Memory corruption in Cisco FXOS and NX-OS unknown
- CVE-2018-0314 Memory corruption in Cisco FXOS and NX-OS unknown
- CVE-2018-0305 Null dereference in Cisco FXOS and NX-OS unknown
Sources
Also known as GHSA-458g-fg5w-22xq.