Zoom Client for Meetings < 5.6.3 Vulnerability (ZSB-21002)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(168816);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/09/15");

  script_cve_id("CVE-2021-30480");

  script_name(english:"Zoom Client for Meetings < 5.6.3 Vulnerability (ZSB-21002)");

  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 5.6.3. It is, therefore, affected by a
vulnerability as referenced in the ZSB-21002 advisory.

  - A heap based buffer overflow exists in all desktop versions of the Zoom Client for Meetings before version
    5.6.3. This Finding was reported to Zoom as a part of 2021 Pwn20wn Vancouver. The attack chain
    demonstrated during Pwn20wn was mitigated in a server-side change in Zoom's infrastructure on 2021-04-09.
    When combined with two other issues reported during Pwn20wn - improper URL validation when sending an XMPP
    message to access a Zoom Marketplace app URL and incorrect URL validation when displaying a  GIPHY image -
    a malicious user can achieve remote code execution on a target's computer. The target must have previously
    accepted a Connection Request  from the malicious user or be in a multi-user chat with the malicious user
    for this attack to succeed. The attack chain demonstrated in Pwn20wn can be highly visible to targets,
    causing multiple client notifications to occur. 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-2021-30480)

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-21002
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9d973346");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Zoom Client for Meetings 5.6.3 or later.");
  script_set_attribute(attribute:"agent", value:"all");
  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:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-30480");

  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:"2021/08/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/08/13");
  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:"Misc.");

  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", "macosx_zoom_installed.nbin", "zoom_nix_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' : '5.6.3' }
];

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE);