7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.009 Low
EPSS
Percentile
82.4%
The version of Zoom Client for Meetings installed on the remote host is prior to 4.1.34460.1105. It is, therefore, affected by a vulnerability as referenced in the ZSB-18001 advisory.
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(168824);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/09/15");
script_cve_id("CVE-2018-15715");
script_name(english:"Zoom Client for Meetings < 4.1.34460.1105 Vulnerability (ZSB-18001)");
script_set_attribute(attribute:"synopsis", value:
"The remote host has an application installed that is affected by a vulnerability.");
script_set_attribute(attribute:"description", value:
"The version of Zoom Client for Meetings installed on the remote host is prior to 4.1.34460.1105. It is, therefore,
affected by a vulnerability as referenced in the ZSB-18001 advisory.
- A vulnerability in the Zoom client could allow a remote, unauthenticated attacker to control meeting
functionality such as ejecting meeting participants, sending chat messages, and controlling participant
microphone muting. If the attacker was also a valid participant in the meeting and another participant was
sharing their desktop screen, the attacker could also take control of that participant's keyboard and
mouse. The vulnerability is due to the fact that Zoom's internal messaging pump dispatched both client
User Datagram Protocol (UDP) and server Transmission Control Protocol (TCP) messages to the same message
handler. An attacker can exploit this vulnerability to craft and send UDP packets which get interpreted as
messages processed from the trusted TCP channel used by authorized Zoom servers. Zoom released client
updates to address this security vulnerability. Users can help keep themselves secure by applying current
updates or downloading the latest Zoom software with all current security updates from
https://zoom.us/download . (CVE-2018-15715)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
# https://explore.zoom.us/en/trust/security/security-bulletin/?filter-cve=&filter=&keywords=ZSB-18001
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?19d6981a");
script_set_attribute(attribute:"solution", value:
"Upgrade to Zoom Client for Meetings 4.1.34460.1105 or later.");
script_set_attribute(attribute:"agent", value:"windows");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-15715");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2018/11/30");
script_set_attribute(attribute:"patch_publication_date", value:"2018/11/30");
script_set_attribute(attribute:"plugin_publication_date", value:"2022/12/15");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a:zoom:zoom");
script_set_attribute(attribute:"cpe", value:"cpe:/a:zoom:meetings");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Windows");
script_copyright(english:"This script is Copyright (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("zoom_client_for_meetings_win_installed.nbin");
script_require_ports("installed_sw/Zoom Client for Meetings", "installed_sw/zoom");
exit(0);
}
include('vcf.inc');
var app_info = NULL;
if (get_kb_item('installed_sw/Zoom Client for Meetings'))
app_info = vcf::get_app_info(app:'Zoom Client for Meetings', win_local:TRUE);
else
app_info = vcf::get_app_info(app:'zoom');
vcf::check_granularity(app_info:app_info, sig_segments:3);
vcf::check_all_backporting(app_info:app_info);
var constraints = [
{ 'fixed_version' : '4.1.34460.1105' }
];
vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE);
7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.009 Low
EPSS
Percentile
82.4%