6.1 Medium
CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
COMPLETE
Availability Impact
NONE
AV:A/AC:L/Au:N/C:N/I:C/A:N
6.5 Medium
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
0.001 Low
EPSS
Percentile
29.8%
According to its self-reported version, Cisco Firepower Threat Defense Software is affected by a vulnerability in the detection engine of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, adjacent attacker to send data directly to the kernel of an affected device. The vulnerability exists because the software improperly filters Ethernet frames sent to an affected device. An attacker could exploit this vulnerability by sending crafted packets to the management interface of an affected device. A successful exploit could allow the attacker to bypass the Layer 2 (L2) filters and send data directly to the kernel of the affected device. A malicious frame successfully delivered would make the target device generate a specific syslog entry.
Please see the included Cisco BIDs and Cisco Security Advisory for more information
#TRUSTED 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
#
# (C) Tenable Network Security, Inc.
#
include('compat.inc');
if (description)
{
script_id(137235);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/10");
script_cve_id("CVE-2019-1695");
script_xref(name:"CISCO-BUG-ID", value:"CSCvm75358");
script_xref(name:"CISCO-SA", value:"cisco-sa-20190501-asa-ftd-bypass");
script_name(english:"Cisco Firepower Threat Defense Software Layer 2 Filtering Bypass (cisco-sa-20190501-asa-ftd-bypass)");
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 vulnerability in the
detection engine of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software
could allow an unauthenticated, adjacent attacker to send data directly to the kernel of an affected device. The
vulnerability exists because the software improperly filters Ethernet frames sent to an affected device. An attacker
could exploit this vulnerability by sending crafted packets to the management interface of an affected device. A
successful exploit could allow the attacker to bypass the Layer 2 (L2) filters and send data directly to the kernel of
the affected device. A malicious frame successfully delivered would make the target device generate a specific syslog entry.
Please see the included Cisco BIDs and Cisco Security Advisory for
more information");
# https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-asa-ftd-bypass
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5f0a37bb");
script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvm75358");
script_set_attribute(attribute:"solution", value:
"Upgrade to the relevant fixed version referenced in Cisco bug ID
CSCvm75358");
script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:N/C:N/I:C/A:N");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/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-2019-1695");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_cwe_id(284);
script_set_attribute(attribute:"vuln_publication_date", value:"2019/05/01");
script_set_attribute(attribute:"patch_publication_date", value:"2019/05/01");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/06/08");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:firepower_threat_defense");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"CISCO");
script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("cisco_enumerate_firepower.nbin");
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 Software');
vuln_ranges = [
{'min_ver' : '6.2.1', 'fix_ver': '6.2.3.12'},
{'min_ver' : '6.3.0', 'fix_ver' : '6.3.0.3'}
];
reporting = make_array(
'port' , 0,
'severity' , SECURITY_WARNING,
'version' , product_info['version'],
'bug_id' , 'CSCvm75358'
);
cisco::check_and_report(
product_info:product_info,
reporting:reporting,
vuln_ranges:vuln_ranges
);
Vendor | Product | Version | CPE |
---|---|---|---|
cisco | firepower_threat_defense | cpe:/o:cisco:firepower_threat_defense |
6.1 Medium
CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
COMPLETE
Availability Impact
NONE
AV:A/AC:L/Au:N/C:N/I:C/A:N
6.5 Medium
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
0.001 Low
EPSS
Percentile
29.8%