Cisco FXOS and NX-OS Software Command Injection Vulnerability (CVE-2019-1779)

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

include('compat.inc');

if (description)
{
  script_id(501291);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/22");

  script_cve_id("CVE-2019-1779");

  script_name(english:"Cisco FXOS and NX-OS Software Command Injection Vulnerability (CVE-2019-1779)");

  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 FXOS Software and Cisco NX-OS
Software could allow an authenticated, local attacker to execute
arbitrary commands on the underlying operating system of an affected
device with elevated privileges. The vulnerability is due to
insufficient validation of arguments passed to certain CLI commands.
An attacker could exploit this vulnerability by including malicious
input as the argument of an affected command. A successful exploit
could allow the attacker to execute arbitrary commands on the
underlying operating system with elevated privileges. An attacker
would need valid device credentials to exploit this vulnerability.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
  # https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-fxos-cmdinj-1779
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?29bf8784");
  script_set_attribute(attribute:"see_also", value:"http://www.securityfocus.com/bid/108394");
  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-2019-1779");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_cwe_id(88);

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/05/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/05/15");
  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:6");
  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:"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) 2023-2024 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:6.2%2825%29" :
        {"versionEndExcluding" : "6.2%2825%29", "versionStartIncluding" : "5.2", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:8.1%281b%29" :
        {"versionEndExcluding" : "8.1%281b%29", "versionStartIncluding" : "7.3", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:8.3%281%29" :
        {"versionEndExcluding" : "8.3%281%29", "versionStartIncluding" : "8.0", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:7.0%283%29i4%289%29" :
        {"versionEndExcluding" : "7.0%283%29i4%289%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:7.0%283%29i7%284%29" :
        {"versionEndExcluding" : "7.0%283%29i7%284%29", "versionStartIncluding" : "7.0%283%29i7", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:7.0%283%29f3%285%29" :
        {"versionEndExcluding" : "7.0%283%29f3%285%29", "versionStartIncluding" : "7.0%283%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:7.3%284%29n1%281%29" :
        {"versionEndExcluding" : "7.3%284%29n1%281%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:6.2%2822%29" :
        {"versionEndExcluding" : "6.2%2822%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:7.3%283%29d1%281%29" :
        {"versionEndExcluding" : "7.3%283%29d1%281%29", "versionStartIncluding" : "7.2", "family" : "NXOS"}
};

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