CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
5.1%
According to its self-reported version, Cisco Firepower Threat Defense Software is affected by a shell access vulnerability in the support tunnel feature due to improper configuration of that feature. An authenticated, local attacker can exploit this, by enabling the support tunnel, setting a key, and deriving the tunnel password, to allow the attacker to run any system command with root access.
Note that Nessus has not attempted to exploit this issue but has instead relied only on the application’s self-reported version number.
#TRUSTED 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
#TRUST-RSA-SHA256 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
#
# (C) Tenable Network Security, Inc.
#
include('compat.inc');
if (description)
{
script_id(136669);
script_version("1.11");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/03/31");
script_cve_id("CVE-2020-3253");
script_xref(name:"CISCO-BUG-ID", value:"CSCvp16933");
script_xref(name:"CISCO-SA", value:"cisco-sa-ftd-shell-9rhJF68K");
script_xref(name:"IAVA", value:"2020-A-0206-S");
script_xref(name:"IAVA", value:"2020-A-0205-S");
script_name(english:"Cisco Firepower Threat Defense Software Shell Access (cisco-sa-ftd-shell-9rhJF68K)");
script_set_attribute(attribute:"synopsis", value:
"The remote device is missing a vendor-supplied security patch.");
script_set_attribute(attribute:"description", value:
"According to its self-reported version, Cisco Firepower Threat Defense Software is affected by a shell access
vulnerability in the support tunnel feature due to improper configuration of that feature. An authenticated, local
attacker can exploit this, by enabling the support tunnel, setting a key, and deriving the tunnel password, to allow the
attacker to run any system command with root access.
Note that Nessus has not attempted to exploit this issue but has instead relied only on the application's self-reported
version number.");
# https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-shell-9rhJF68K
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?979c9bac");
script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvp16933");
script_set_attribute(attribute:"solution", value:
"Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvp16933");
script_set_cvss_base_vector("CVSS2#AV:L/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:L/AC:L/PR:H/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-2020-3253");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_cwe_id(284);
script_set_attribute(attribute:"vuln_publication_date", value:"2020/05/06");
script_set_attribute(attribute:"patch_publication_date", value:"2020/05/06");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/15");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:firepower_threat_defense");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"CISCO");
script_copyright(english:"This script is Copyright (C) 2020-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl", "os_fingerprint.nasl", "cisco_enumerate_firepower.nbin", "cisco_asa_firepower_version.nasl");
script_require_keys("installed_sw/Cisco Firepower Threat Defense");
exit(0);
}
include('cisco_workarounds.inc');
include('ccf.inc');
product_info = cisco::get_product_info(name:'Cisco Firepower Threat Defense');
vuln_ranges = [
{'min_ver' : '0.0', 'fix_ver': '6.5.0'}
];
workarounds = make_list(CISCO_WORKAROUNDS['no_workaround']);
workaround_params = make_list();
reporting = make_array(
'port' , 0,
'severity' , SECURITY_HOLE,
'version' , product_info['version'],
'bug_id' , 'CSCvp16933',
'disable_caveat', TRUE
);
cisco::check_and_report(
product_info:product_info,
workarounds:workarounds,
workaround_params:workaround_params,
reporting:reporting,
vuln_ranges:vuln_ranges
);
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
5.1%