Splunk Enterprise 8.2.0 < 8.2.12, 9.0.0 < 9.0.6 (SVD-2023-0802)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(180289);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/26");

  script_cve_id("CVE-2023-40593");
  script_xref(name:"IAVA", value:"2023-A-0448-S");

  script_name(english:"Splunk Enterprise 8.2.0 < 8.2.12, 9.0.0 < 9.0.6 (SVD-2023-0802)");

  script_set_attribute(attribute:"synopsis", value:
"An application running on a remote web server host is affected by a vulnerability");
  script_set_attribute(attribute:"description", value:
"The version of Splunk installed on the remote host is prior to tested version. It is, therefore, affected by a
vulnerability as referenced in the SVD-2023-0802 advisory.

  - In Splunk Enterprise versions lower than 9.0.6 and 8.2.12, a malicious actor can send a malformed security
    assertion markup language (SAML) request to the `/saml/acs` REST endpoint which can cause a denial of
    service through a crash or hang of the Splunk daemon. (CVE-2023-40593)

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://advisory.splunk.com/advisories/SVD-2023-0802.html");
  script_set_attribute(attribute:"solution", value:
"Upgrade Splunk Enterprise to versions 8.2.12 and 9.0.6. This vulnerability does not affect Splunk Enterprise versions
9.1.0 and higher. Splunk is actively monitoring and patching Splunk Cloud Platform instances.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/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:N/UI:N/S:U/C:N/I:N/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-2023-40593");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(400);

  script_set_attribute(attribute:"vuln_publication_date", value:"2023/08/30");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/08/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/08/30");

  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:"generated_plugin", value:"current");
  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) 2023-2024 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", "splunk_nix_installed.nbin");
  script_require_keys("installed_sw/Splunk", "Settings/ParanoidReport");

  exit(0);
}

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

if (report_paranoia < 2) audit(AUDIT_PARANOID);

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

var constraints = [
  { 'min_version' : '8.2.0', 'fixed_version' : '8.2.12', 'license' : 'Enterprise' },
  { 'min_version' : '9.0.0', 'fixed_version' : '9.0.6', 'license' : 'Enterprise' }
];
vcf::splunk::check_version_and_report(
    app_info:app_info,
    constraints:constraints,
    severity:SECURITY_HOLE
);