Cisco NX-OS Improper Input Validation (CVE-2013-6683)

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

include('compat.inc');

if (description)
{
  script_id(502721);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/03/23");

  script_cve_id("CVE-2013-6683");

  script_name(english:"Cisco NX-OS Improper Input Validation (CVE-2013-6683)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"The IPv6 implementation in Cisco NX-OS does not properly handle
neighbor-table adjacencies, which allows remote attackers to cause a
denial of service (NS processing outage) via a series of malformed
packets, aka Bug ID CSCtd15904.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
  # http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-6683
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b45fe69b");
  # http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-6683
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b45fe69b");
  script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2013-6683");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/11/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/11/13");
  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:nx-os:-");
  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) 2024-2026 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:-" :
        {"family" : "NXOS", "versionEndIncluding" : "4.1(2)E1(1j)"}
};

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