Cisco Unified Communications Manager Session Initiation Protocol Denial of Service Vulnerability

high Nessus Plugin ID 126644

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco Unified Communications Manager is affected by a vulnerability in the Session Initiation Protocol (SIP) protocol implementation could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to insufficient validation of input SIP traffic. An attacker could exploit this vulnerability by sending a malformed SIP packet to an affected Cisco Unified Communications Manager.
A successful exploit could allow the attacker to trigger a new registration process on all connected phones, temporarily disrupting service. Please see the included Cisco BIDs and Cisco Security Advisory for more information

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvo70834

Plugin Details

Severity: High

ID: 126644

File Name: cisco-sa-20190703-cucm-dos.nasl

Version: 1.10

Type: combined

Family: CISCO

Published: 7/12/2019

Updated: 4/11/2022

Configuration: Enable thorough checks

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2019-1887

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/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: 7/3/2019

Vulnerability Publication Date: 7/6/2019

Reference Information

CVE: CVE-2019-1887

CWE: 787

CISCO-SA: cisco-sa-20190703-cucm-dos

CISCO-BUG-ID: CSCvo70834

Detections

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