CVE-2022-20817

Published Jun 15, 2022

Last updated a year ago

Overview

Description
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.
Source
ykramarz@cisco.com
NVD status
Modified

Risk scores

CVSS 3.1

Type
Primary
Base score
7.4
Impact score
5.2
Exploitability score
2.2
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Severity
HIGH

CVSS 2.0

Type
Primary
Base score
4
Impact score
4.9
Exploitability score
4.9
Vector string
AV:N/AC:H/Au:N/C:P/I:P/A:N

Weaknesses

nvd@nist.gov
CWE-338
ykramarz@cisco.com
CWE-338

Social media

Hype score
Not currently trending

Configurations