cisco-sa-cp6901-dup-cert-82jdJGe4: Cisco IP Phone Duplicate Key Vulnerability

First published: Wed Jun 15 2022(Updated: )

A vulnerability in Cisco Unified IP Phones could allow an unauthenticated, remote attacker to impersonate another user's phone if the Cisco Unified Communications Manager (CUCM) is in secure mode. This vulnerability is due to improper key generation during the manufacturing process that could result in duplicated manufactured keys installed on multiple devices. An attacker could exploit this vulnerability by performing a machine-in-the-middle attack on the secure communication between the phone and the CUCM. A successful exploit could allow the attacker to impersonate another user's phone. This vulnerability cannot be addressed with software updates. There is a workaround that addresses this vulnerability. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cp6901-dup-cert-82jdJGe4

Credit: This vulnerability was found by Andrew Chi Cisco during internal security testingDavid McGrew Cisco during internal security testing Cisco during internal security testingBrandon Enright Cisco during internal security testing

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