CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:S/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
54.1%
A remote code execution vulnerability exists in the Lua interpreter of Cisco Firepower Threat Defense (FTD) software due to insufficient restrictions on the allowed Lua function calls within the context of user-supplied Lua scripts. An authenticated, remote attacker can exploit this to bypass authentication and execute arbitrary commands with root privileges on the underlying Linux operating system of an affected device.
Please see the included Cisco BIDs and Cisco Security Advisory for more information.
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(131229);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/15");
script_cve_id("CVE-2019-15992");
script_xref(name:"CISCO-BUG-ID", value:"CSCvr96680");
script_xref(name:"CISCO-SA", value:"cisco-sa-20191112-asa-ftd-lua-rce");
script_xref(name:"IAVA", value:"2019-A-0425-S");
script_name(english:"Cisco Firepower Threat Defense RCE (cisco-sa-20191112-asa-ftd-lua-rce)");
script_set_attribute(attribute:"synopsis", value:
"The remote device is missing a vendor-supplied security patch");
script_set_attribute(attribute:"description", value:
"A remote code execution vulnerability exists in the Lua interpreter of Cisco Firepower Threat Defense (FTD) software
due to insufficient restrictions on the allowed Lua function calls within the context of user-supplied Lua scripts. An
authenticated, remote attacker can exploit this to bypass authentication and execute arbitrary commands with root
privileges on the underlying Linux operating system of an affected device.
Please see the included Cisco BIDs and Cisco Security Advisory for more information.
Note that Nessus has not tested for 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-20191112-asa-ftd-lua-rce
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0e82478b");
script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvr96680");
script_set_attribute(attribute:"solution", value:
"Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvr96680.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/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: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-2019-15992");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"vuln_publication_date", value:"2019/11/12");
script_set_attribute(attribute:"patch_publication_date", value:"2019/11/12");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/11/22");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a: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) 2019-2020 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('misc_func.inc');
include('ccf.inc');
product_info = cisco::get_product_info(name:'Cisco Firepower Threat Defense');
# Check is on a VDB build number, not version of product
vdb_build = product_info['VDB Version'];
report = '';
fixed_version = '329';
if (ver_compare(ver:vdb_build, fix:fixed_version, strict:FALSE) < 0)
{
report += '\n Installed VDB build : ' + vdb_build +
'\n Fixed VDB build : ' + fixed_version +
'\n Cisco bug ID : CSCvr96680' +
'\n';
}
if (empty(report))
audit(AUDIT_HOST_NOT, 'affected');
security_report_v4(port:0, severity:SECURITY_HOLE, extra:report);
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:S/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
54.1%