Cisco NX-OS Improper Input Validation (CVE-2017-12334)

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

include('compat.inc');

if (description)
{
  script_id(502726);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/10/16");

  script_cve_id("CVE-2017-12334");

  script_name(english:"Cisco NX-OS Improper Input Validation (CVE-2017-12334)");

  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. An attacker would need valid administrator credentials to
perform this exploit. 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. An exploit could allow the attacker to execute arbitrary
commands as root. 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
3500 Platform 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: CSCvf15113, CSCvf15122, CSCvf15125,
CSCvf15131, CSCvf15143, CSCvg04088.

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/102162");
  script_set_attribute(attribute:"see_also", value:"http://www.securitytracker.com/id/1039934");
  # https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-nxos3
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?98672771");
  script_set_attribute(attribute:"see_also", value:"http://www.securityfocus.com/bid/102162");
  script_set_attribute(attribute:"see_also", value:"http://www.securitytracker.com/id/1039934");
  # https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-nxos3
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?98672771");
  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-2017-12334");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_cwe_id(20);

  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_3000_series_switches");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nexus_7000_series_switches");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nexus_9000_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_3000_series_switches" :
        {"versionEndIncluding" : "6.0%282%29A8%283%29", "versionStartIncluding" : "6.0%282%29A8%283%29", "family" : "NXOS"},
    "cpe:/o:cisco:nexus_9000_series_switches:7.0%283%29I7%281%29" :
        {"versionEndIncluding" : "7.0%283%29I7%281%29", "versionStartIncluding" : "7.0%283%29I7%281%29", "family" : "NXOS"},
    "cpe:/o:cisco:nexus_7000_series_switches:7.3%283%29D1%281%29" :
        {"versionEndExcluding" : "7.3%283%29D1%281%29", "family" : "NXOS"},
    "cpe:/o:cisco:nexus_9000_series_switches:7.0%283%29F3%281%29" :
        {"versionEndExcluding" : "7.0%283%29F3%281%29", "family" : "NXOS"},
    "cpe:/o:cisco:nexus_7000_series_switches:8.1%281%29" :
        {"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_HOLE);