Cisco NX-OS Software CLI Arbitrary Command Execution (CVE-2018-0306)

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

include('compat.inc');

if (description)
{
  script_id(501415);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/26");

  script_cve_id("CVE-2018-0306");

  script_name(english:"Cisco NX-OS Software CLI Arbitrary Command Execution (CVE-2018-0306)");

  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 parser of Cisco NX-OS Software could allow
an authenticated, local attacker to perform a command-injection attack
on an affected device. The vulnerability is due to insufficient input
validation of command arguments. An attacker could exploit this
vulnerability by injecting malicious command arguments into a
vulnerable CLI command. A successful exploit could allow the attacker
to execute arbitrary commands with root privileges on the affected
device. Note: This vulnerability requires that any feature license is
uploaded to the device. The vulnerability does not require that the
license be used. This vulnerability affects MDS 9000 Series Multilayer
Switches, Nexus 1000V Series Switches, Nexus 1100 Series Cloud
Services Platforms, Nexus 2000 Series Fabric Extenders, Nexus 3000
Series Switches, Nexus 3500 Platform Switches, Nexus 3600 Platform
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. Cisco Bug IDs:
CSCve51693, CSCve91634, CSCve91659, CSCve91663.

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.securitytracker.com/id/1041169");
  # https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180620-nx-os-cli-execution
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?ea7fd148");
  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: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-2018-0306");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_cwe_id(78);

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/06/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/06/21");
  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:5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:6.0%282%29a8%283%29");
  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:"cpe", value:"cpe:/o:cisco:nx-os:8.1%280%29bd%280.20%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:8.1%280.2%29s0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:8.1%280.59%29s0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:8.1%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:7.3%283%29n1%281%29" :
        {"versionEndExcluding" : "7.3%283%29n1%281%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:8.1%280.2%29s0" :
        {"versionEndIncluding" : "8.1%280.2%29s0", "versionStartIncluding" : "8.1%280.2%29s0", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:8.1%280%29bd%280.20%29" :
        {"versionEndIncluding" : "8.1%280%29bd%280.20%29", "versionStartIncluding" : "8.1%280%29bd%280.20%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:8.1%280.59%29s0" :
        {"versionEndIncluding" : "8.1%280.59%29s0", "versionStartIncluding" : "8.1%280.59%29s0", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:8.1%281%29" :
        {"versionEndIncluding" : "8.1%281%29", "versionStartIncluding" : "8.1%281%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:6.0%282%29a8%283%29" :
        {"versionEndIncluding" : "6.0%282%29a8%283%29", "versionStartIncluding" : "6.0%282%29a8%283%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:5.2%281%29sv3%283.15%29" :
        {"versionEndExcluding" : "5.2%281%29sv3%283.15%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:8.1%281a%29" :
        {"versionEndExcluding" : "8.1%281a%29", "family" : "NXOS"}
};

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