Pulse Connect Secure < 9.1R11.5 (SA44800)

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

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

if (description)
{
  script_id(150869);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");

  script_cve_id("CVE-2021-22908");
  script_xref(name:"IAVA", value:"2021-A-0283-S");

  script_name(english:"Pulse Connect Secure < 9.1R11.5 (SA44800)");

  script_set_attribute(attribute:"synopsis", value:
"The remote device is affected by a buffer overflow vulnerability.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version, the version of Pulse Connect Secure running on the remote host is greater than
9.0Rx / 9.1Rx and prior to 9.1R11.5. It is, therefore, affected by a buffer overflow vulnerability on the Pulse Connect 
Secure gateway that allows a remote authenticated user with privileges to browse SMB shares to execute arbitrary code as 
the root user.

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://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44800");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Pulse Connect Secure version 9.1R11.5 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-2021-22908");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/05/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/06/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/06/21");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:pulsesecure:pulse_connect_secure");
  script_set_attribute(attribute:"stig_severity", value:"I");
  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) 2021-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("pulse_connect_secure_detect.nbin");
  script_require_keys("installed_sw/Pulse Connect Secure");

  exit(0);
}

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

var port = get_http_port(default:443, embedded:TRUE);
var app_info = vcf::pulse_connect_secure::get_app_info(app:'Pulse Connect Secure', port:port, full_version:TRUE, webapp:TRUE);

# from https://www-prev.pulsesecure.net/techpubs/pulse-connect-secure/pcs/9.1rx/
# 9.1R11.4 is 9.1.11.12319
# 9.1R11.5 is 9.1.11.13127
var constraints = [
 {'min_version':'9.0.0', 'max_version':'9.1.11.12319', 'fixed_display':'9.1R11.5 (9.1.11.13127)'}
];

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