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%
A vulnerability in the CLI of Cisco FXOS Software and Cisco NX-OS Software could allow an authenticated, local attacker to execute arbitrary commands on the underlying operating system of an affected device. This vulnerability is due to insufficient validation of arguments passed to certain CLI commands. An attacker could exploit this vulnerability by including malicious input as the argument of an affected command. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system with elevated privileges. An attacker would need administrator credentials to exploit this vulnerability.
This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##
include('compat.inc');
if (description)
{
script_id(501342);
script_version("1.1");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/26");
script_cve_id("CVE-2019-1781");
script_name(english:"Cisco FXOS and NX-OS Software Command Injection (CVE-2019-1781)");
script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
script_set_attribute(attribute:"description", value:
"A vulnerability in the CLI of Cisco FXOS Software and Cisco NX-OS
Software could allow an authenticated, local attacker to execute
arbitrary commands on the underlying operating system of an affected
device. This vulnerability is due to insufficient validation of
arguments passed to certain CLI commands. An attacker could exploit
this vulnerability by including malicious input as the argument of an
affected command. A successful exploit could allow the attacker to
execute arbitrary commands on the underlying operating system with
elevated privileges. An attacker would need administrator credentials
to exploit this vulnerability.
This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
script_set_attribute(attribute:"see_also", value:"http://www.securityfocus.com/bid/108407");
# https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-fxos-nxos-cmdinj-1781-1782
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9d66d198");
script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
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-2019-1781");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_cwe_id(88);
script_set_attribute(attribute:"vuln_publication_date", value:"2019/05/15");
script_set_attribute(attribute:"patch_publication_date", value:"2019/05/15");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/07/25");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:4");
script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:6");
script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:7");
script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:8");
script_set_attribute(attribute:"generated_plugin", value:"former");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Tenable.ot");
script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("tenable_ot_api_integration.nasl");
script_require_keys("Tenable.ot/Cisco");
exit(0);
}
include('tenable_ot_cve_funcs.inc');
get_kb_item_or_exit('Tenable.ot/Cisco');
var asset = tenable_ot::assets::get(vendor:'Cisco');
var vuln_cpes = {
"cpe:/o:cisco:nx-os:6.2%2825%29" :
{"versionEndExcluding" : "6.2%2825%29", "versionStartIncluding" : "5.2", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:8.3%282%29" :
{"versionEndExcluding" : "8.3%282%29", "versionStartIncluding" : "7.3", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:7.0%283%29i4%289%29" :
{"versionEndExcluding" : "7.0%283%29i4%289%29", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:7.0%283%29i7%284%29" :
{"versionEndExcluding" : "7.0%283%29i7%284%29", "versionStartIncluding" : "7.0%283%29i7", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:7.3%284%29n1%281%29" :
{"versionEndExcluding" : "7.3%284%29n1%281%29", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:6.2%2822%29" :
{"versionEndExcluding" : "6.2%2822%29", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:7.3%283%29d1%281%29" :
{"versionEndExcluding" : "7.3%283%29d1%281%29", "versionStartIncluding" : "7.2", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:8.2%283%29" :
{"versionEndExcluding" : "8.2%283%29", "versionStartIncluding" : "8.0", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:8.3%281%29" :
{"versionEndExcluding" : "8.3%281%29", "versionStartIncluding" : "8.3", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:6.0%282%29a8%2811%29" :
{"versionEndExcluding" : "6.0%282%29a8%2811%29", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:4.0%281a%29" :
{"versionEndExcluding" : "4.0%281a%29", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:7.0%283%29f3%285%29" :
{"versionEndExcluding" : "7.0%283%29f3%285%29", "versionStartIncluding" : "7.0%283%29", "family" : "NXOS"}
};
tenable_ot::cve::compare_and_report(asset:asset, cpes:vuln_cpes, severity:SECURITY_HOLE);
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%