Cisco FXOS and NX-OS Software Command Injection Vulnerability (CVE-2019-1795)

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

include('compat.inc');

if (description)
{
  script_id(501406);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/22");

  script_cve_id("CVE-2019-1795");

  script_name(english:"Cisco FXOS and NX-OS Software Command Injection Vulnerability (CVE-2019-1795)");

  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 Linux operating system with the
privilege level of root. The vulnerability is due to insufficient
validation of arguments passed to a specific CLI command on the
affected device. 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 Linux operating system with elevated
privileges. An attacker would need valid administrator 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-cmdinj-1795
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d9ac45f1");
  script_set_attribute(attribute:"see_also", value:"http://www.securityfocus.com/bid/108479");
  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-2019-1795");

  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:3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:4");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:5");
  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:8.2%283%29" :
        {"versionEndExcluding" : "8.2%283%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:8.3%281%29" :
        {"versionEndExcluding" : "8.3%281%29", "versionStartIncluding" : "8.3", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:7.0%283%29i4%288%29" :
        {"versionEndExcluding" : "7.0%283%29i4%288%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:7.3%283%29i7%283%29" :
        {"versionEndExcluding" : "7.3%283%29i7%283%29", "versionStartIncluding" : "7.0%283%29i7", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:6.0%282%29a8%2811%29" :
        {"versionEndExcluding" : "6.0%282%29a8%2811%29", "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"},
    "cpe:/o:cisco:nx-os:3.2%283a%29" :
        {"versionEndExcluding" : "3.2%283a%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:4.0%281a%29" :
        {"versionEndExcluding" : "4.0%281a%29", "versionStartIncluding" : "4.0", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:5.2%281%29sv3%284.1%29" :
        {"versionEndExcluding" : "5.2%281%29sv3%284.1%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:5.2" :
        {"versionEndExcluding" : "5.2", "family" : "NXOS"}
};

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