Palo Alto Networks PAN-OS 8.1.x < 8.1.19 / 9.0.x < 9.0.14 / 9.1.x < 9.1.10 / 10.0.x < 10.0.4 Vulnerability

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

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

if (description)
{
  script_id(152507);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/09/10");

  script_cve_id("CVE-2021-3047");
  script_xref(name:"IAVA", value:"2021-A-0390-S");

  script_name(english:"Palo Alto Networks PAN-OS 8.1.x < 8.1.19 / 9.0.x < 9.0.14 / 9.1.x < 9.1.10 / 10.0.x < 10.0.4 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 8.1.19 or 9.0.x prior to 9.0.14 or
9.1.x prior to 9.1.10 or 10.0.x prior to 10.0.4. It is, therefore, affected by a vulnerability.

  - A cryptographically weak pseudo-random number generator (PRNG) is used during authentication to the Palo
    Alto Networks PAN-OS web interface. This enables an authenticated attacker, with the capability to observe
    their own authentication secrets over a long duration on the PAN-OS appliance, to impersonate another
    authenticated web interface administrator's session. (CVE-2021-3047)

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-2021-3047");
  script_set_attribute(attribute:"see_also", value:"https://cwe.mitre.org/data/definitions/338.html");
  script_set_attribute(attribute:"solution", value:
"Upgrade to PAN-OS 8.1.19 / 9.0.14 / 9.1.10 / 10.0.4 or later");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:S/C:N/I:P/A:N");
  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:L/UI:N/S:U/C:N/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-3047");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(338);

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/08/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/08/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/08/12");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  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) 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", "Settings/ParanoidReport");

  exit(0);
}

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

vcf::palo_alto::initialize();

var app_name = 'Palo Alto Networks PAN-OS';

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

if (report_paranoia < 2) audit(AUDIT_PARANOID);

var constraints = [
  { 'min_version' : '8.1.0', 'fixed_version' : '8.1.19' },
  { 'min_version' : '9.0.0', 'fixed_version' : '9.0.14' },
  { 'min_version' : '9.1.0', 'fixed_version' : '9.1.10' },
  { 'min_version' : '10.0.0', 'fixed_version' : '10.0.4' }
];

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