Vulnerability · Published Feb 5, 2020 · Assigned by cisco
CVE-2020-3119Cisco NX-OS Software Cisco Discovery Protocol Remote Code Execution Vulnerability
High 8.8
In plain English
A high-severity out-of-bounds write in Cisco Unified Computing System (Managed) from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 4.8% (higher than 92% of all known vulnerabilities).
Official description
A vulnerability in the Cisco Discovery Protocol implementation for Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code or cause a reload on an affected device. The vulnerability exists because the Cisco Discovery Protocol parser does not properly validate input for certain fields in a Cisco Discovery Protocol message. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. An successful exploit could allow the attacker to cause a stack overflow, which could allow the attacker to execute arbitrary code with administrative privileges on an affected device. 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).
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco Unified Computing System (Managed) | unspecified – before 9.3(2) |
Weakness: CWE-787 · Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- 20200205 Cisco NX-OS Software Cisco Discovery Protocol Remote Code Execution Vulnerability vendor-advisory, x_refsource_CISCO
- http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.html x_refsource_MISC