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CVE-2022-20817

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
15/06/2022
Last modified:
07/11/2023

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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 7.40 HIGH
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): None

Base Score 3.x
7.40
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:H/Au:N/C:P/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 4.00 MEDIUM
Vector: AV:N/AC:H/Au:N/C:P/I:P/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): None

Base Score 2.0
4.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:h:cisco:unified_ip_phone_6911:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:unified_ip_phone_6911_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:unified_ip_phone_6921:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:unified_ip_phone_6921_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:unified_ip_phone_6941:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:unified_ip_phone_6941_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:unified_ip_phone_6945:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:unified_ip_phone_6945_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:unified_ip_phone_6961:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:unified_ip_phone_6961_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:unified_ip_phone_8941:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:unified_ip_phone_8941_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:unified_ip_phone_8945:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:unified_ip_phone_8945_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:unified_ip_phone_8961:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools