CVE-2020-3111
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).
- Score
- CVSS 3.1 8.8 High
- Status
- Modified - psirt@cisco.com
- Published
- 2020-02-05
- Last modified
- 2024-11-15
- Weaknesses
- CWE-20
Affected products
- Cisco Ip Phone (Cisco)
- Ip Conference Phone 7832 Firmware (Cisco)
- Ip Conference Phone 7832 With Multiplatform Firmware (Cisco)
- Ip Conference Phone 8832 Firmware (Cisco)
- Ip Conference Phone 8832 With Multiplatform Firmware (Cisco)
- Ip Phone 6821 Firmware (Cisco)
- Ip Phone 6841 Firmware (Cisco)
- Ip Phone 6851 Firmware (Cisco)
- Ip Phone 6861 Firmware (Cisco)
- Ip Phone 6871 Firmware (Cisco)
- Ip Phone 7811 Firmware (Cisco)
- Ip Phone 7811 With Multiplatform Firmware (Cisco)
- Ip Phone 7821 Firmware (Cisco)
- Ip Phone 7821 With Multiplatform Firmware (Cisco)
- Ip Phone 7841 Firmware (Cisco)
- Ip Phone 7841 With Multiplatform Firmware (Cisco)
- Ip Phone 7861 Firmware (Cisco)
- Ip Phone 7861 With Multiplatform Firmware (Cisco)
- Ip Phone 8811 Firmware (Cisco)
- Ip Phone 8811 With Multiplatform Firmware (Cisco)
- Ip Phone 8841 Firmware (Cisco)
- Ip Phone 8841 With Multiplatform Firmware (Cisco)
- Ip Phone 8845 Firmware (Cisco)
- Ip Phone 8845 With Multiplatform Firmware (Cisco)
- Ip Phone 8851 Firmware (Cisco)
- Ip Phone 8851 With Multiplatform Firmware (Cisco)
- Ip Phone 8861 Firmware (Cisco)
- Ip Phone 8861 With Multiplatform Firmware (Cisco)
- Ip Phone 8865 Firmware (Cisco)
- Ip Phone 8865 With Multiplatform Firmware (Cisco)
- Unified Ip Conference Phone 8831 Firmware (Cisco)
- Unified Ip Conference Phone 8831 For Third-party Call Control Firmware (Cisco)
- Wireless Ip Phone 8821-ex Firmware (Cisco)
- Wireless Ip Phone 8821 Firmware (Cisco)
References
- http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.html
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200205-voip-phones-rce-dos