Cisco Unified Communications Products DoS (cisco-sa-ucm-dos-zHS9X9kD)

medium Nessus Plugin ID 160316


The remote device is missing a vendor-supplied security patch


A vulnerability in the Cisco Discovery Protocol of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, adjacent attacker to cause a kernel panic on an affected system, resulting in a denial of service (DoS) condition. This vulnerability is due to incorrect processing of certain Cisco Discovery Protocol packets. An attacker could exploit this vulnerability by continuously sending certain Cisco Discovery Protocol packets to an affected device. A successful exploit could allow the attacker to cause a kernel panic on the system that is running the affected software, resulting in a DoS condition.

Please see the included Cisco BID and Cisco Security Advisory for more information.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.


Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvy44822

See Also

Plugin Details

Severity: Medium

ID: 160316

File Name: cisco-sa-ucm-dos-zHS9X9kD.nasl

Version: 1.8

Type: combined

Family: CISCO

Published: 4/28/2022

Updated: 4/5/2024

Supported Sensors: Nessus

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.5

Vector: CVSS2#AV:A/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2022-20804


Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:cisco:unified_communications_manager

Required KB Items: Host/Cisco/CUCM/Version, Host/Cisco/CUCM/Version_Display

Exploit Ease: No known exploits are available

Patch Publication Date: 4/20/2022

Vulnerability Publication Date: 4/20/2022

Reference Information

CVE: CVE-2022-20804

CWE: 754

CISCO-SA: cisco-sa-ucm-dos-zHS9X9kD

IAVA: 2022-A-0178-S