Splunk Enterprise 8.1.x < 8.1.7 Information Disclosure

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

include('compat.inc');

if (description)
{
  script_id(163933);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/03/23");

  script_cve_id("CVE-2021-33845");
  script_xref(name:"IAVA", value:"2022-A-0219-S");

  script_name(english:"Splunk Enterprise 8.1.x < 8.1.7 Information Disclosure");

  script_set_attribute(attribute:"synopsis", value:
"An application running on a remote web server host may be affected by an information disclosure vulnerability.");
  script_set_attribute(attribute:"description", value:
"The Splunk Enterprise REST API allows enumeration of usernames via the lockout error message. The potential
vulnerability impacts Splunk Enterprise instances before 8.1.7 when configured to return verbose login errors.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://www.splunk.com/en_us/product-security/announcements/svd-2022-0502.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6ba35eb6");
  script_set_attribute(attribute:"solution", value:
"Upgrade Splunk Enterprise to version 8.1.7, or later.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/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:L/PR:N/UI:N/S:U/C:L/I:N/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-2021-33845");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2022/05/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/05/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/08/09");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:splunk:splunk");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("splunkd_detect.nasl", "splunk_web_detect.nasl", "macos_splunk_installed.nbin", "splunk_win_installed.nbin");
  script_require_keys("installed_sw/Splunk", "Settings/ParanoidReport");

  exit(0);
}

# Default config is not vulnerable so paranoid
if (report_paranoia < 2) audit(AUDIT_PARANOID);

include('vcf_extras_splunk.inc');

var app_info = vcf::splunk::get_app_info();

var constraints = [
  { 'min_version' : '8.1', 'fixed_version' : '8.1.7', 'license': 'Enterprise' }
];

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