SolarWinds Serv-U 15.0 < 15.3.1

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

include('compat.inc');

if (description)
{
  script_id(207860);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/09/27");

  script_cve_id("CVE-2021-35249");

  script_name(english:"SolarWinds Serv-U 15.0 < 15.3.1");

  script_set_attribute(attribute:"synopsis", value:
"SolarWinds Serv-U is affected by a vulnerability");
  script_set_attribute(attribute:"description", value:
"The version of SolarWinds Serv-U installed on the remote host is prior to 15.3.1. It is, therefore, affected by a
vulnerability as referenced in the serv-u_15_3_1 advisory.

  - This broken access control vulnerability pertains specifically to a domain admin who can access
    configuration & user data of other domains which they should not have access to. Please note the admin is
    unable to modify the data (read only operation). This UAC issue leads to a data leak to unauthorized users
    for a domain, with no log of them accessing the data unless they attempt to modify it. This read-only
    activity is logged to the original domain and does not specify which domain was accessed. (CVE-2021-35249)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35249
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a9a42f73");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Serv-U version 15.3.1 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/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:L/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-2021-35249");

  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:"2021/07/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/05/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/09/27");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:solarwinds:serv-u");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:solarwinds:serv-u_file_server");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:serv-u:serv-u");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"FTP");

  script_copyright(english:"This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("servu_version.nasl");
  script_require_keys("installed_sw/Serv-U");

  exit(0);
}

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

var port = get_ftp_port(default:21);

var app_info = vcf::get_app_info(app:'Serv-U', port:port);

var constraints = [
  { 'min_version' : '15.0', 'max_version' : '15.3', 'fixed_version' : '15.3.1' }
];
vcf::check_version_and_report(
    app_info:app_info,
    constraints:constraints,
    severity:SECURITY_WARNING
);