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).

• 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 8832 firmware (< 12.7\(1\)) • cisco ip conference phone 8832 with multiplatform firmware (< 11.3\(1\)sr1) • cisco ip phone 6821 firmware (< 11.3\(1\)sr1) • cisco ip phone 6841 firmware (< 11.3\(1\)sr1) • cisco ip phone 6851 firmware (< 11.3\(1\)sr1) • cisco ip phone 6861 firmware (< 11.3\(1\)sr1) • cisco ip phone 6871 firmware (< 11.3\(1\)sr1) • cisco ip phone 7811 firmware (< 12.7\(1\)) • cisco ip phone 7811 with multiplatform firmware (< 11.3\(1\)sr1) • cisco ip phone 7821 firmware (< 12.7\(1\)) • cisco ip phone 7821 with multiplatform firmware (< 11.3\(1\)sr1) • cisco ip phone 7841 firmware (< 12.7\(1\)) • cisco ip phone 7841 with multiplatform firmware (< 11.3\(1\)sr1) • cisco ip phone 7861 firmware (< 12.7\(1\)) • cisco ip phone 7861 with multiplatform firmware (< 11.3\(1\)sr1) • cisco ip phone 8811 firmware (< 12.7\(1\)) • cisco ip phone 8811 with multiplatform firmware (< 11.3\(1\)sr1) • cisco ip phone 8841 firmware (< 12.7\(1\)) • cisco ip phone 8841 with multiplatform firmware (< 11.3\(1\)sr1) • cisco ip phone 8851 firmware (< 12.7\(1\)) • cisco ip phone 8851 with multiplatform firmware (< 11.3\(1\)sr1) • cisco ip phone 8861 firmware (< 12.7\(1\)) • cisco ip phone 8861 with multiplatform firmware (< 11.3\(1\)sr1) • cisco ip phone 8845 firmware (< 12.7\(1\)) • cisco ip phone 8845 with multiplatform firmware (< 11.3\(1\)sr1) • cisco ip phone 8865 firmware (< 12.7\(1\)) • cisco ip phone 8865 with multiplatform firmware (< 11.3\(1\)sr1) • cisco unified ip conference phone 8831 firmware (< 10.3\(1\)sr6) • cisco unified ip conference phone 8831 for third-party call control firmware • cisco wireless ip phone 8821 firmware (< 11.0\(5\)sr2) • cisco wireless ip phone 8821-ex firmware (< 11.0\(5\)sr2)