Cisco TelePresence VCS / Expressway < 8.8.2 Received Packet Parser DoS

high Nessus Plugin ID 97326

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Synopsis

A video conferencing application running on the remote host is affected by a denial of service vulnerability.

Description

According to its self-reported version, the Cisco TelePresence Video Communication Server (VCS) / Expressway running on the remote host is prior to 8.8.2. It is, therefore, affected by a denial of service vulnerability in the received packet parser due to insufficient size validation of user-supplied input. An unauthenticated, remote attacker can exploit this, via specially crafted H.224 data in Real-Time Transport Protocol (RTP) packets, to cause a buffer overflow in the cache, resulting in crashing the application and a system reload.

Solution

Upgrade to Cisco TelePresence VCS / Expressway version 8.8.2 or later.

Plugin Details

Severity: High

ID: 97326

File Name: cisco_telepresence_vcs_sa_20170125-expressway.nasl

Version: 1.8

Type: remote

Family: CISCO

Published: 2/22/2017

Updated: 4/7/2022

Configuration: Enable thorough checks

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2017-3790

CVSS v3

Risk Factor: High

Base Score: 8.6

Temporal Score: 7.5

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

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

Vulnerability Information

CPE: cpe:/h:cisco:telepresence_video_communication_server, cpe:/a:cisco:telepresence_video_communication_server, cpe:/a:cisco:telepresence_video_communication_server_software, cpe:/a:cisco:expressway_software

Required KB Items: Cisco/TelePresence_VCS/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 1/25/2017

Vulnerability Publication Date: 1/25/2017

Reference Information

CVE: CVE-2017-3790

BID: 95786

CISCO-SA: cisco-sa-20170125-expressway

CISCO-BUG-ID: CSCus99263

Detections

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