Dell EMC iDRAC9 < 5.00.10.00 (DSA-2021-177)

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

include('compat.inc');

if (description)
{
  script_id(161797);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/01/05");

  script_cve_id("CVE-2021-20235");
  script_xref(name:"IAVA", value:"2022-A-0225-S");

  script_name(english:"Dell EMC iDRAC9 < 5.00.10.00 (DSA-2021-177)");

  script_set_attribute(attribute:"synopsis", value:
"Dell EMC iDRAC9 installed on the remote host is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Dell EMC iDRAC9 installed on the remote host is prior to 5.00.10.00. It is, therefore, affected by a
vulnerability as referenced in the DSA-2021-177 advisory.

  - There's a flaw in the zeromq server in versions before 4.3.3 in src/decoder_allocators.hpp. The decoder
    static allocator could have its sized changed, but the buffer would remain the same as it is a static
    buffer. A remote, unauthenticated attacker who sends a crafted request to the zeromq server could trigger
    a buffer overflow WRITE of arbitrary data if CURVE/ZAP authentication is not enabled. The greatest impact
    of this flaw is to application availability, data integrity, and confidentiality. (CVE-2021-20235)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://www.dell.com/support/kbdoc/en-us/000191229/dsa-2021-177-dell-emc-idrac-security-update-for-multiple-security-vulnerabilities
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?13d440ac");
  script_set_attribute(attribute:"solution", value:
"See vendor advisory");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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: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-2021-20235");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/09/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/09/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/06/03");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/h:dell:emc_idrac9");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/a:dell:emc_idrac9");
  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("drac_detect.nasl");
  script_require_keys("installed_sw/iDRAC", "Settings/ParanoidReport");

  exit(0);
}

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

# Not checking mitigation
if (report_paranoia < 2) audit(AUDIT_PARANOID);

var port = get_http_port(default:443, embedded:TRUE);
var app_info = vcf::idrac::get_app_info(port:port);
var constraints = [
{ 'fixed_version' : '5.00.10.00', 'idrac' : '9' }
];
vcf::idrac::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);