CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
AI Score
Confidence
Low
The version of SolarWinds Serv-U installed on the remote host is prior to 15.3 HF1. It is, therefore, affected by a vulnerability as referenced in the serv-u_15_3_hf_1 advisory.
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##
include('compat.inc');
if (description)
{
script_id(207859);
script_version("1.1");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/09/27");
script_cve_id("CVE-2021-35250");
script_name(english:"SolarWinds Serv-U 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 HF1. It is, therefore, affected by a
vulnerability as referenced in the serv-u_15_3_hf_1 advisory.
- A researcher reported a Directory Transversal Vulnerability in Serv-U 15.3. This may allow access to files
relating to the Serv-U installation and server files. This issue has been resolved in Serv-U 15.3 Hotfix
1. (CVE-2021-35250)
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-2021-35250
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5c924ecb");
script_set_attribute(attribute:"solution", value:
"Upgrade to Serv-U version 15.3 HF1 or later.");
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:H/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-2021-35250");
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:"2022/03/02");
script_set_attribute(attribute:"patch_publication_date", value:"2022/03/02");
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 = [
{ 'fixed_version' : '15.3.1', 'equal' : '15.3', 'fixed_display' : '15.3 HF1' }
];
vcf::check_version_and_report(
app_info:app_info,
constraints:constraints,
require_paranoia:TRUE,
severity:SECURITY_WARNING
);
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
AI Score
Confidence
Low