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
AI Score
Confidence
High
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 Linux operating system with the privilege level of root. The vulnerability is due to insufficient validation of arguments passed to a specific CLI command on the affected device. 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 Linux operating system with elevated privileges. An attacker would need valid 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(501406);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/22");
script_cve_id("CVE-2019-1795");
script_name(english:"Cisco FXOS and NX-OS Software Command Injection Vulnerability (CVE-2019-1795)");
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 Linux operating system with the
privilege level of root. The vulnerability is due to insufficient
validation of arguments passed to a specific CLI command on the
affected device. 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 Linux operating system with elevated
privileges. An attacker would need valid 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.");
# https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-cmdinj-1795
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d9ac45f1");
script_set_attribute(attribute:"see_also", value:"http://www.securityfocus.com/bid/108479");
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-2019-1795");
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:3");
script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:4");
script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:5");
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) 2023-2024 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:8.2%283%29" :
{"versionEndExcluding" : "8.2%283%29", "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:7.0%283%29i4%288%29" :
{"versionEndExcluding" : "7.0%283%29i4%288%29", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:7.3%283%29i7%283%29" :
{"versionEndExcluding" : "7.3%283%29i7%283%29", "versionStartIncluding" : "7.0%283%29i7", "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:7.0%283%29f3%285%29" :
{"versionEndExcluding" : "7.0%283%29f3%285%29", "versionStartIncluding" : "7.0%283%29", "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:3.2%283a%29" :
{"versionEndExcluding" : "3.2%283a%29", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:4.0%281a%29" :
{"versionEndExcluding" : "4.0%281a%29", "versionStartIncluding" : "4.0", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:5.2%281%29sv3%284.1%29" :
{"versionEndExcluding" : "5.2%281%29sv3%284.1%29", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:5.2" :
{"versionEndExcluding" : "5.2", "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
AI Score
Confidence
High
EPSS
Percentile
5.1%