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nessusThis script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.ZOOM_CLIENT_ZSB-23013.NASL
HistoryJun 13, 2023 - 12:00 a.m.

Zoom Client for Meetings < 5.14.0 Vulnerability (ZSB-23013)

2023-06-1300:00:00
This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
20
zoom client
meetings
vulnerability
zsb-23013
input validation
privilege escalation
network access
security updates
cve-2023-34121

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.1 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

40.6%

The version of Zoom Client for Meetings installed on the remote host is prior to 5.14.0. It is, therefore, affected by a vulnerability as referenced in the ZSB-23013 advisory.

  • Improper input validation in the Zoom for Windows, Zoom Rooms, Zoom VDI Windows Meeting clients before 5.14.0 may allow an authenticated user to potentially enable an escalation of privilege 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-2023-34121)

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(177219);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/03");

  script_cve_id("CVE-2023-34121");

  script_name(english:"Zoom Client for Meetings < 5.14.0 Vulnerability (ZSB-23013)");

  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 5.14.0. It is, therefore, affected by a
vulnerability as referenced in the ZSB-23013 advisory.

  - Improper input validation in the Zoom for Windows, Zoom Rooms, Zoom VDI Windows Meeting clients before
    5.14.0 may allow an authenticated user to potentially enable an escalation of privilege 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-2023-34121)

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-23013
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3d619b96");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Zoom Client for Meetings 5.14.0 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/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:L/UI:N/S:U/C:H/I:H/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-2023-34121");

  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:"2023/06/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/06/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/06/13");

  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' : '5.14.0' }
];

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

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.1 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

40.6%

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