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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 cod…

Impact

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

VendorProductAffected versions
CiscoIp Conference Phone 7832 Firmware
before 12.7\(1\)
CiscoIp Conference Phone 7832 With Multiplatform Firmware
before 11.3\(1\)sr1
CiscoIp Conference Phone 8832 Firmware
before 12.7\(1\)
CiscoIp Conference Phone 8832 With Multiplatform Firmware
before 11.3\(1\)sr1
CiscoIp Phone 6821 Firmware
before 11.3\(1\)sr1
CiscoIp Phone 6841 Firmware
before 11.3\(1\)sr1
CiscoIp Phone 6851 Firmware
before 11.3\(1\)sr1
CiscoIp Phone 6861 Firmware
before 11.3\(1\)sr1
CiscoIp Phone 6871 Firmware
before 11.3\(1\)sr1
CiscoIp Phone 7811 Firmware
before 12.7\(1\)
CiscoIp Phone 7811 With Multiplatform Firmware
before 11.3\(1\)sr1
CiscoIp Phone 7821 Firmware
before 12.7\(1\)

Weakness classification

CWE-20

References