CVE-2020-3111: Cisco IP Phone Remote Code Execution and Denial of Service Vulnerability
First published: Wed Feb 05 2020(Updated: )
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).
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Ip Conference Phone 7832 Firmware | <12.7\(1\) | |
| Cisco Ip Conference Phone 7832 With Multiplatform Firmware | <11.3\(1\)sr1 | |
| Cisco Ip Conference Phone 7832 | ||
| Cisco Ip Conference Phone 8832 Firmware | <12.7\(1\) | |
| Cisco Ip Conference Phone 8832 With Multiplatform Firmware | <11.3\(1\)sr1 | |
| Cisco Ip Conference Phone 8832 | ||
| Cisco Ip Phone 6821 Firmware | <11.3\(1\)sr1 | |
| Cisco Ip Phone 6821 | ||
| Cisco Ip Phone 6841 Firmware | <11.3\(1\)sr1 | |
| Cisco Ip Phone 6841 | ||
| Cisco Ip Phone 6851 Firmware | <11.3\(1\)sr1 | |
| Cisco Ip Phone 6851 | ||
| Cisco Ip Phone 6861 Firmware | <11.3\(1\)sr1 | |
| Cisco Ip Phone 6861 | ||
| Cisco Ip Phone 6871 Firmware | <11.3\(1\)sr1 | |
| Cisco Ip Phone 6871 | ||
| Cisco Ip Phone 7811 Firmware | <12.7\(1\) | |
| Cisco Ip Phone 7811 With Multiplatform Firmware | <11.3\(1\)sr1 | |
| Cisco Ip Phone 7811 | ||
| Cisco Ip Phone 7821 Firmware | <12.7\(1\) | |
| Cisco Ip Phone 7821 With Multiplatform Firmware | <11.3\(1\)sr1 | |
| Cisco Ip Phone 7821 | ||
| Cisco Ip Phone 7841 Firmware | <12.7\(1\) | |
| Cisco Ip Phone 7841 With Multiplatform Firmware | <11.3\(1\)sr1 | |
| Cisco Ip Phone 7841 | ||
| Cisco Ip Phone 7861 Firmware | <12.7\(1\) | |
| Cisco Ip Phone 7861 With Multiplatform Firmware | <11.3\(1\)sr1 | |
| Cisco IP Phone 7861 | ||
| Cisco Ip Phone 8811 Firmware | <12.7\(1\) | |
| Cisco Ip Phone 8811 With Multiplatform Firmware | <11.3\(1\)sr1 | |
| Cisco Ip Phone 8811 | ||
| Cisco Ip Phone 8841 Firmware | <12.7\(1\) | |
| Cisco Ip Phone 8841 With Multiplatform Firmware | <11.3\(1\)sr1 | |
| Cisco Ip Phone 8841 | ||
| Cisco Ip Phone 8851 Firmware | <12.7\(1\) | |
| Cisco Ip Phone 8851 With Multiplatform Firmware | <11.3\(1\)sr1 | |
| Cisco IP Phone 8851 | ||
| Cisco Ip Phone 8861 Firmware | <12.7\(1\) | |
| Cisco Ip Phone 8861 With Multiplatform Firmware | <11.3\(1\)sr1 | |
| Cisco Ip Phone 8861 | ||
| Cisco Ip Phone 8845 Firmware | <12.7\(1\) | |
| Cisco Ip Phone 8845 With Multiplatform Firmware | <11.3\(1\)sr1 | |
| Cisco Ip Phone 8845 | ||
| Cisco Ip Phone 8865 Firmware | <12.7\(1\) | |
| Cisco Ip Phone 8865 With Multiplatform Firmware | <11.3\(1\)sr1 | |
| Cisco Ip Phone 8865 | ||
| Cisco Unified Ip Conference Phone 8831 Firmware | <10.3\(1\)sr6 | |
| Cisco Unified Ip Conference Phone 8831 | ||
| Cisco Unified Ip Conference Phone 8831 For Third-party Call Control Firmware | ||
| Cisco Unified Ip Conference Phone 8831 For Third-party Call Control | ||
| Cisco Wireless Ip Phone 8821 Firmware | <11.0\(5\)sr2 | |
| Cisco Wireless Ip Phone 8821 | ||
| Cisco Wireless Ip Phone 8821-ex Firmware | <11.0\(5\)sr2 | |
| Cisco Wireless Ip Phone 8821-ex |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this vulnerability?
The vulnerability ID for this vulnerability is CVE-2020-3111.
What is the severity of CVE-2020-3111?
The severity of CVE-2020-3111 is high with a CVSS score of 8.8.
What is the affected software for CVE-2020-3111?
The affected software for CVE-2020-3111 includes various Cisco IP Phone models with specific firmware versions.
How can an attacker exploit CVE-2020-3111?
An attacker can exploit CVE-2020-3111 by sending maliciously crafted packets to an affected Cisco IP Phone.
What is the recommended mitigation for CVE-2020-3111?
The recommended mitigation for CVE-2020-3111 is to apply the necessary security updates provided by Cisco.
- agent/references
- agent/type
- agent/weakness
- agent/author
- agent/description
- collector/nvd-index
- agent/software-canonical-lookup-request
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/last-modified-date
- agent/title
- agent/first-publish-date
- agent/event
- agent/tags
- vendor/cisco
- canonical/cisco ip conference phone 7832 firmware
- canonical/cisco ip conference phone 7832 with multiplatform firmware
- canonical/cisco ip conference phone 7832
- canonical/cisco ip conference phone 8832 firmware
- canonical/cisco ip conference phone 8832 with multiplatform firmware
- canonical/cisco ip conference phone 8832
- canonical/cisco ip phone 6821 firmware
- canonical/cisco ip phone 6821
- canonical/cisco ip phone 6841 firmware
- canonical/cisco ip phone 6841
- canonical/cisco ip phone 6851 firmware
- canonical/cisco ip phone 6851
- canonical/cisco ip phone 6861 firmware
- canonical/cisco ip phone 6861
- canonical/cisco ip phone 6871 firmware
- canonical/cisco ip phone 6871
- canonical/cisco ip phone 7811 firmware
- canonical/cisco ip phone 7811 with multiplatform firmware
- canonical/cisco ip phone 7811
- canonical/cisco ip phone 7821 firmware
- canonical/cisco ip phone 7821 with multiplatform firmware
- canonical/cisco ip phone 7821
- canonical/cisco ip phone 7841 firmware
- canonical/cisco ip phone 7841 with multiplatform firmware
- canonical/cisco ip phone 7841
- canonical/cisco ip phone 7861 firmware
- canonical/cisco ip phone 7861 with multiplatform firmware
- canonical/cisco ip phone 7861
- canonical/cisco ip phone 8811 firmware
- canonical/cisco ip phone 8811 with multiplatform firmware
- canonical/cisco ip phone 8811
- canonical/cisco ip phone 8841 firmware
- canonical/cisco ip phone 8841 with multiplatform firmware
- canonical/cisco ip phone 8841
- canonical/cisco ip phone 8851 firmware
- canonical/cisco ip phone 8851 with multiplatform firmware
- canonical/cisco ip phone 8851
- canonical/cisco ip phone 8861 firmware
- canonical/cisco ip phone 8861 with multiplatform firmware
- canonical/cisco ip phone 8861
- canonical/cisco ip phone 8845 firmware
- canonical/cisco ip phone 8845 with multiplatform firmware
- canonical/cisco ip phone 8845
- canonical/cisco ip phone 8865 firmware
- canonical/cisco ip phone 8865 with multiplatform firmware
- canonical/cisco ip phone 8865
- canonical/cisco unified ip conference phone 8831 firmware
- canonical/cisco unified ip conference phone 8831
- canonical/cisco unified ip conference phone 8831 for third-party call control firmware
- canonical/cisco unified ip conference phone 8831 for third-party call control
- canonical/cisco wireless ip phone 8821 firmware
- canonical/cisco wireless ip phone 8821
- canonical/cisco wireless ip phone 8821-ex firmware
- canonical/cisco wireless ip phone 8821-ex