Tenable Nessus 8.x.x < 8.14.0 Privilege Escalation (TNS-2021-07)

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
##

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

if (description)
{
  script_id(149280);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/02/08");

  script_cve_id("CVE-2021-20079");

  script_name(english:"Tenable Nessus 8.x.x < 8.14.0 Privilege Escalation (TNS-2021-07)");

  script_set_attribute(attribute:"synopsis", value:
"Tenable Nessus running on the remote host is affected by a privilege escalation vulnerability.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version, the Tenable Nessus application running on the remote host is prior to
8.14.0. It is, therefore, affected by a privilege escalation vulnerability. An authenticated attacker can exploit
this, via file upload, to gain administrator privileges to the system.
 
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://www.tenable.com/security/tns-2021-07");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Tenable Nessus version 8.14.0 or later.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/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:L/AC:L/PR:H/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-2021-20079");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/03/19");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/04/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/05/05");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:tenable:nessus");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("nessus_detect.nasl", "nessus_installed_win.nbin", "nessus_installed_linux.nbin", "macos_nessus_installed.nbin");
  script_require_keys("installed_sw/Tenable Nessus");

  exit(0);
}

include('vcf_extras.inc');

var app_info, constraints;

app_info = vcf::combined_get_app_info(app:'Tenable Nessus');

vcf::check_granularity(app_info:app_info, sig_segments:3);

constraints = [
  { 'min_version' : '8.0.0', 'fixed_version' : '8.14.0' }
];

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