Vulnerability · Published Feb 5, 2020 · Assigned by cisco
CVE-2020-3111Cisco IP Phone Remote Code Execution and Denial of Service Vulnerability
High 8.8
In plain English
A high-severity improper input validation in Cisco IP phone from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.1% (higher than 88% of all known vulnerabilities).
Official description
A vulnerability in the Cisco Discovery Protocol implementation for the Cisco IP Phone could allow an unauthenticated, adjacent attacker to remotely execute code with root privileges or cause a reload of an affected IP phone. The vulnerability is due to missing checks when processing Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a crafted Cisco Discovery Protocol packet to the targeted IP phone. A successful exploit could allow the attacker to remotely execute code with root privileges or cause a reload of an affected IP phone, resulting in a denial of service (DoS) condition. 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 IP phone | unspecified – before 12.7(1) |
Weakness: CWE-20 · Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- 20200205 Cisco IP Phone Remote Code Execution and Denial of Service Vulnerability vendor-advisory, x_refsource_CISCO
- http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.html x_refsource_MISC