CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
5.1%
A vulnerability in the Telnet CLI command of Cisco NX-OS System Software 7.1 through 7.3 running on Cisco Nexus Series Switches could allow an authenticated, local attacker to perform a command injection attack. The vulnerability is due to insufficient input validation of command arguments. An attacker could exploit this vulnerability by injecting crafted command arguments into the Telnet CLI command. An exploit could allow the attacker to read or write arbitrary files at the user’s privilege level outside of the user’s path. Cisco Bug IDs:
CSCvb86771.
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(501254);
script_version("1.1");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/26");
script_cve_id("CVE-2017-6650");
script_name(english:"Cisco Nexus Series Switches Telnet CLI Command Injection (CVE-2017-6650)");
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 Telnet CLI command of Cisco NX-OS System
Software 7.1 through 7.3 running on Cisco Nexus Series Switches could
allow an authenticated, local attacker to perform a command injection
attack. The vulnerability is due to insufficient input validation of
command arguments. An attacker could exploit this vulnerability by
injecting crafted command arguments into the Telnet CLI command. An
exploit could allow the attacker to read or write arbitrary files at
the user's privilege level outside of the user's path. Cisco Bug IDs:
CSCvb86771.
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/98528");
script_set_attribute(attribute:"see_also", value:"http://www.securitytracker.com/id/1038518");
# https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170517-nss1
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?682858d2");
script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P");
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:L/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-2017-6650");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_cwe_id(20, 77);
script_set_attribute(attribute:"vuln_publication_date", value:"2017/05/22");
script_set_attribute(attribute:"patch_publication_date", value:"2017/05/22");
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:7.1%281%29n1%281%29");
script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:7.1%282%29n1%281%29");
script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:7.1%283%29n1%281%29");
script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:7.1%283%29n1%282%29");
script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:7.1%283%29n1%282.1%29");
script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:7.1%283%29n1%283.12%29");
script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:7.1%284%29n1%281%29");
script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:7.2%280%29d1%280.437%29");
script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:7.2%280%29n1%281%29");
script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:7.2%280%29zz%2899.1%29");
script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:7.2%281%29n1%281%29");
script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:7.3%280%29n1%281%29");
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:7.1%281%29n1%281%29" :
{"versionEndIncluding" : "7.1%281%29n1%281%29", "versionStartIncluding" : "7.1%281%29n1%281%29", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:7.1%282%29n1%281%29" :
{"versionEndIncluding" : "7.1%282%29n1%281%29", "versionStartIncluding" : "7.1%282%29n1%281%29", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:7.1%283%29n1%281%29" :
{"versionEndIncluding" : "7.1%283%29n1%281%29", "versionStartIncluding" : "7.1%283%29n1%281%29", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:7.1%283%29n1%282%29" :
{"versionEndIncluding" : "7.1%283%29n1%282%29", "versionStartIncluding" : "7.1%283%29n1%282%29", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:7.1%283%29n1%282.1%29" :
{"versionEndIncluding" : "7.1%283%29n1%282.1%29", "versionStartIncluding" : "7.1%283%29n1%282.1%29", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:7.1%283%29n1%283.12%29" :
{"versionEndIncluding" : "7.1%283%29n1%283.12%29", "versionStartIncluding" : "7.1%283%29n1%283.12%29", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:7.1%284%29n1%281%29" :
{"versionEndIncluding" : "7.1%284%29n1%281%29", "versionStartIncluding" : "7.1%284%29n1%281%29", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:7.2%280%29d1%280.437%29" :
{"versionEndIncluding" : "7.2%280%29d1%280.437%29", "versionStartIncluding" : "7.2%280%29d1%280.437%29", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:7.2%280%29n1%281%29" :
{"versionEndIncluding" : "7.2%280%29n1%281%29", "versionStartIncluding" : "7.2%280%29n1%281%29", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:7.2%280%29zz%2899.1%29" :
{"versionEndIncluding" : "7.2%280%29zz%2899.1%29", "versionStartIncluding" : "7.2%280%29zz%2899.1%29", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:7.2%281%29n1%281%29" :
{"versionEndIncluding" : "7.2%281%29n1%281%29", "versionStartIncluding" : "7.2%281%29n1%281%29", "family" : "NXOS"},
"cpe:/o:cisco:nx-os:7.3%280%29n1%281%29" :
{"versionEndIncluding" : "7.3%280%29n1%281%29", "versionStartIncluding" : "7.3%280%29n1%281%29", "family" : "NXOS"}
};
tenable_ot::cve::compare_and_report(asset:asset, cpes:vuln_cpes, severity:SECURITY_WARNING);
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
5.1%