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nessusThis script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.ZOOM_CLIENT_ZSB-23047_2.NASL
HistoryNov 14, 2023 - 12:00 a.m.

Zoom Client for Meetings < 5.16.0 Vulnerability (ZSB-23047)

2023-11-1400:00:00
This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
2
zoom client
security vulnerability
unauthenticated disclosure
network access
resource consumption
cve-2023-39203
remote host
nessus scan

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7.6 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

20.7%

The version of Zoom Client for Meetings installed on the remote host is prior to 5.16.0. It is, therefore, affected by a vulnerability as referenced in the ZSB-23047 advisory.

  • Uncontrolled resource consumption in Zoom Team Chat for Zoom Desktop Client for Windows and Zoom VDI Client may allow an unauthenticated user to conduct a disclosure of information via network access. 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-2023-39203)

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('compat.inc');

if (description)
{
  script_id(185527);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/12/20");

  script_cve_id("CVE-2023-39203");

  script_name(english:"Zoom Client for Meetings < 5.16.0 Vulnerability (ZSB-23047)");

  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 5.16.0. It is, therefore, affected by a
vulnerability as referenced in the ZSB-23047 advisory.

  - Uncontrolled resource consumption in Zoom Team Chat for Zoom Desktop Client for Windows and Zoom VDI
    Client may allow an unauthenticated user to conduct a disclosure of information via network access. 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-2023-39203)

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-23047
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?68e3267c");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Zoom Client for Meetings 5.16.0 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-39203");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2023/11/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/11/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/11/14");

  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_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 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");

  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);

var constraints = [
  { 'fixed_version' : '5.16.0' }
];

vcf::check_version_and_report(
    app_info:app_info,
    constraints:constraints,
    severity:SECURITY_HOLE
);
VendorProductVersionCPE
zoomzoomcpe:/a:zoom:zoom
zoommeetingscpe:/a:zoom:meetings

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7.6 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

20.7%

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