CVE-2020-3415 Cisco NX-OS Software Data Management Engine Remote Code Execution Vulnerability
An adjacent attacker can execute arbitrary code or cause a denial of service on Cisco NX-OS devices by sending crafted CDP packets when jumbo frames are enabled.
- 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-2020-3415?
CVE-2020-3415 is a high-severity memory corruption vulnerability in Cisco Nx-Os, published on 27 Aug 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability in the Data Management Engine (DME) of Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code with administrative privileges or cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending a crafted Cisco Discovery Protocol packet to a Layer 2-adjacent affected device. A successful exploit could allow the attacker to execute arbitrary code with administrative privileges or cause the Cisco Discovery Protocol process to crash and restart multiple times, causing the affected device to reload and resulting in a DoS condition. Note: Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent). Exploitation of this vulnerability also requires jumbo frames to be enabled on the interface that receives the crafted Cisco Discovery Protocol packets on the affected device.
Weakness: CWE-787
Which versions are affected by CVE-2020-3415?
It affects 1 product.
Products include Cisco Nx-Os.
How do I fix CVE-2020-3415?
No fix has been published for CVE-2020-3415 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-3415 being exploited?
There is no known exploitation of CVE-2020-3415 in the wild and no public exploit code.
Other vulnerabilities in Cisco Nx-Os
Sources
Also known as GHSA-f9q3-64mg-5r5q.