CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
79.1%
The remote Citrix SD-WAN Center is version 10.2.x prior to 10.2.8, 11.1.x prior to 11.1.2b, 11.2.x prior to 11.2.2. It is, therefore, affected by multiple vulnerabilities:
An unauthenticated remote code execution with root privileges. (CVE-2020-8271)
A authentication bypass resulting in exposure of SD-WAN functionality. (CVE-2020-8272)
A privilege escalation of an authenticated user to root. (CVE-2020-8273)
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
##
# (C) Tenable Network Security, Inc.
##
include('compat.inc');
if (description)
{
script_id(142894);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/08");
script_cve_id("CVE-2020-8271", "CVE-2020-8272", "CVE-2020-8273");
script_xref(name:"IAVA", value:"2020-A-0524-S");
script_name(english:"Citrix SD-WAN Center 10.2.x < 10.2.8 / 11.1.x < 11.1.2b / 11.2.x < 11.2.2 Multiple Vulnerabilities (CTX285061)");
script_set_attribute(attribute:"synopsis", value:
"The remote device is affected by multiple vulnerabilities.");
script_set_attribute(attribute:"description", value:
"The remote Citrix SD-WAN Center is version 10.2.x prior to 10.2.8, 11.1.x prior to 11.1.2b, 11.2.x prior to
11.2.2. It is, therefore, affected by multiple vulnerabilities:
- An unauthenticated remote code execution with root privileges. (CVE-2020-8271)
- A authentication bypass resulting in exposure of SD-WAN functionality. (CVE-2020-8272)
- A privilege escalation of an authenticated user to root. (CVE-2020-8273)
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://support.citrix.com/article/CTX285061");
script_set_attribute(attribute:"solution", value:
"Upgrade Citrix SD-WAN Center to version 10.2.8, 11.1.2b, 11.2.2 or later.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/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: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-2020-8271");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_cwe_id(23, 78, 287);
script_set_attribute(attribute:"vuln_publication_date", value:"2020/11/10");
script_set_attribute(attribute:"patch_publication_date", value:"2020/11/10");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/11/13");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value:"cpe:/a:citrix:sd-wan");
script_set_attribute(attribute:"stig_severity", value:"II");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"CGI abuses");
script_copyright(english:"This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("citrix_sdwan_detect.nbin");
script_require_keys("installed_sw/Citrix SD-WAN");
exit(0);
}
include('vcf.inc');
include('http.inc');
app_name = 'Citrix SD-WAN';
port = get_http_port(default:443);
app_info = vcf::get_app_info(app:app_name, port:port, webapp:TRUE);
edition = app_info['Edition'];
if (report_paranoia < 2 && empty_or_null(edition))
audit(AUDIT_PARANOID);
if (!empty_or_null(edition) && 'center' >!< tolower(edition))
audit(AUDIT_HOST_NOT, 'affected');
constraints = [
{ 'min_version' : '10.2.0', 'fixed_version' : '10.2.8' },
{ 'min_version' : '11.1.0', 'fixed_version' : '11.1.2b' },
{ 'min_version' : '11.2.0', 'fixed_version' : '11.2.2' }
];
vcf::check_version_and_report(
app_info:app_info,
constraints:constraints,
severity:SECURITY_HOLE
);
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
79.1%