Cisco NX-OS Software Role-Based Access Control Elevated Privileges (CVE-2018-0293)

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

include('compat.inc');

if (description)
{
  script_id(501312);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/26");

  script_cve_id("CVE-2018-0293");

  script_name(english:"Cisco NX-OS Software Role-Based Access Control Elevated Privileges (CVE-2018-0293)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"A vulnerability in role-based access control (RBAC) for Cisco NX-OS
Software could allow an authenticated, remote attacker to execute CLI
commands that should be restricted for a nonadministrative user. The
attacker would have to possess valid user credentials for the device.
The vulnerability is due to incorrect RBAC privilege assignment for
certain CLI commands. An attacker could exploit this vulnerability by
authenticating to a device as a nonadministrative user and executing
specific commands from the CLI. An exploit could allow the attacker to
run commands that should be restricted to administrative users. These
commands could modify the configuration or boot image on the device.
This vulnerability affects MDS 9000 Series Multilayer Switches, Nexus
2000 Series Switches, 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: CSCvd77904.

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/104520");
  script_set_attribute(attribute:"see_also", value:"http://www.securitytracker.com/id/1041169");
  # https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180620-nxosrbac
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c61ac8ae");
  script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/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:N/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-2018-0293");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/06/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/06/20");
  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");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:7.3%282%29n1%280.395%29");
  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%280.112%29s0");
  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", "versionStartIncluding" : "6.0", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:7.3%282%29n1%280.395%29" :
        {"versionEndIncluding" : "7.3%282%29n1%280.395%29", "versionStartIncluding" : "7.3%282%29n1%280.395%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:8.1%280.112%29s0" :
        {"versionEndIncluding" : "8.1%280.112%29s0", "versionStartIncluding" : "8.1%280.112%29s0", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:7.0%283%29i7%281%29" :
        {"versionEndExcluding" : "7.0%283%29i7%281%29", "versionStartIncluding" : "7.0%283%29i4", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:7.0%283%29i7%282%29" :
        {"versionEndExcluding" : "7.0%283%29i7%282%29", "versionStartIncluding" : "6.0", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:8.1%281%29" :
        {"versionEndExcluding" : "8.1%281%29", "versionStartIncluding" : "5.2", "family" : "NXOS"}
};

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