Detections
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Cisco Expressway Series and TelePresence Video Communication DoS (cisco-sa-expressway-vcs-dos-n6xxTMZB)
high Nessus Plugin ID 141361
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Synopsis
The version of Cisco TelePresence Video Communication Server installed on the remote host is affected by a DoS vulnerability.Description
According to its self-reported version number, the version of Cisco TelePresence Video Communication Server is affected by a denial of service (DoS) vulnerability in the Session Initiation Protocol (SIP) due to incorrect handling of incoming SIP packets to an affected device. An unauthenticated, remote attacker can exploit this, by sending a series of SIP packets to an affected device, in order to cause a DoS condition.Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvu78519.See Also
Plugin Details
Severity: High
ID: 141361
File Name: cisco-sa-expressway-vcs-dos-n6xxTMZB.nasl
Version: 1.12
Type: remote
Family: CISCO
Published: 10/9/2020
Updated: 4/11/2022
Configuration: Enable thorough checks (optional)
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.6
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-2020-3596
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:telepresence_video_communication_server, cpe:/a:cisco:telepresence_video_communication_server_software, cpe:/h:cisco:telepresence_video_communication_server
Required KB Items: Cisco/TelePresence_VCS/Version
Exploit Ease: No known exploits are available
Patch Publication Date: 10/7/2020
Vulnerability Publication Date: 10/7/2020
Reference Information
CVE: CVE-2020-3596