Palo Alto Networks PAN-OS 8.1.x < 8.1.17 / 9.0.x < 9.0.11 / 9.1.x < 9.1.5 Vulnerability

##
# (C) Tenable Network Security, Inc.
##

include('compat.inc');

if (description)
{
  script_id(142876);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/02/19");

  script_cve_id("CVE-2020-2022");
  script_xref(name:"IAVA", value:"2020-A-0522-S");

  script_name(english:"Palo Alto Networks PAN-OS 8.1.x < 8.1.17 / 9.0.x < 9.0.11 / 9.1.x < 9.1.5 Vulnerability");

  script_set_attribute(attribute:"synopsis", value:
"The remote PAN-OS host is affected by a vulnerability");
  script_set_attribute(attribute:"description", value:
"The version of Palo Alto Networks PAN-OS running on the remote host is 8.1.x prior to 8.1.17 or 9.0.x prior to 9.0.11 or
9.1.x prior to 9.1.5. It is, therefore, affected by a vulnerability.

  - An information exposure vulnerability exists in Palo Alto Networks Panorama software that discloses the
    token for the Panorama web interface administrator's session to a managed device when the Panorama
    administrator performs a context switch into that device. This vulnerability allows an attacker to gain
    privileged access to the Panorama web interface. An attacker requires some knowledge of managed firewalls
    to exploit this issue. (CVE-2020-2022)

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://security.paloaltonetworks.com/CVE-2020-2022");
  script_set_attribute(attribute:"see_also", value:"https://cwe.mitre.org/data/definitions/200.html");
  script_set_attribute(attribute:"solution", value:
"Upgrade to PAN-OS 8.1.17 / 9.0.11 / 9.1.5 or later");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:R/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-2020-2022");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_cwe_id(200);

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/11/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/11/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/11/13");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:paloaltonetworks:pan-os");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Palo Alto Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2020-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("palo_alto_version.nbin");
  script_require_keys("Host/Palo_Alto/Firewall/Version", "Host/Palo_Alto/Firewall/Full_Version", "Host/Palo_Alto/Firewall/Source");

  exit(0);
}

include('vcf.inc');
include('vcf_extras.inc');

vcf::palo_alto::initialize();

app_name = 'Palo Alto Networks PAN-OS';

app_info = vcf::get_app_info(app:app_name, kb_ver:'Host/Palo_Alto/Firewall/Full_Version', kb_source:'Host/Palo_Alto/Firewall/Source');

constraints = [
  { 'min_version' : '8.1.0', 'fixed_version' : '8.1.17' },
  { 'min_version' : '9.0.0', 'fixed_version' : '9.0.11' },
  { 'min_version' : '9.1.0', 'fixed_version' : '9.1.5' }
];

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