Cisco NX-OS Command Injection (CVE-2017-12335)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(502785);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/10/16");

  script_cve_id("CVE-2017-12335");

  script_name(english:"Cisco NX-OS Command Injection (CVE-2017-12335)");

  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 NX-OS System Software 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 a vulnerable CLI command and
gain unauthorized access to the underlying operating system of the
device. An exploit could allow the attacker to execute arbitrary
commands at the user's privilege level. On products that support
multiple virtual device contexts (VDCs), this vulnerability could
allow an attacker to execute commands at the user's privilege level
outside the user's environment. This vulnerability affects the
following products running Cisco NX-OS System Software: Multilayer
Director Switches, Nexus 2000 Series Fabric Extenders, Nexus 3000
Series Switches, Nexus 5000 Series Switches, Nexus 5500 Platform
Switches, Nexus 5600 Platform Switches, Nexus 6000 Series Switches,
Nexus 7000 Series Switches, Nexus 7700 Series Switches, Nexus 9000
Series Switches in standalone NX-OS mode, Nexus 9500 R-Series Line
Cards and Fabric Modules, Unified Computing System Manager. Cisco Bug
IDs: CSCvf14923, CSCvf14926, CSCvg04095.

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/102165");
  script_set_attribute(attribute:"see_also", value:"http://www.securitytracker.com/id/1039935");
  # https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-nxos4
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?136c4be2");
  script_set_attribute(attribute:"see_also", value:"http://www.securityfocus.com/bid/102165");
  script_set_attribute(attribute:"see_also", value:"http://www.securitytracker.com/id/1039935");
  # https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-nxos4
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?136c4be2");
  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:C/C:L/I:L/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-12335");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_cwe_id(77);

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/11/30");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/11/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/12/04");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nexus_5000_series_switches");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nexus_7000_series_switches");
  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) 2024-2025 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:nexus_5000_series_switches" :
        {"versionEndExcluding" : "7.3%283%29N1%281%29", "family" : "NXOS"},
    "cpe:/o:cisco:nexus_7000_series_switches" :
        {"versionEndIncluding" : "8.1%281%29", "versionStartIncluding" : "8.1%281%29", "family" : "NXOS"}
};

tenable_ot::cve::compare_and_report(asset:asset, cpes:vuln_cpes, severity:SECURITY_WARNING);