Lucene search

K
nessusThis script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.TENABLE_OT_CISCO_CVE-2019-1599.NASL
HistoryJul 25, 2023 - 12:00 a.m.

Cisco NX-OS Software Netstack Denial of Service (CVE-2019-1599)

2023-07-2500:00:00
This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
11
cisco
nx-os
dos
vulnerability
network stack
memory buffers
tcp streams
nexus
switches
fabric interconnect
tenable.ot

CVSS2

7.8

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS3

8.6

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

EPSS

0.002

Percentile

52.3%

A vulnerability in the network stack of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on the affected device. The vulnerability is due to an issue with allocating and freeing memory buffers in the network stack.
An attacker could exploit this vulnerability by sending crafted TCP streams to an affected device in a sustained way. A successful exploit could cause the network stack of an affected device to run out of available buffers, impairing operations of control plane and management plane protocols, resulting in a DoS condition. Note: This vulnerability can be triggered only by traffic that is destined to an affected device and cannot be exploited using traffic that transits an affected device. Nexus 1000V Switch for Microsoft Hyper-V is affected in versions prior to 5.2(1)SM3(2.1). Nexus 1000V Switch for VMware vSphere is affected in versions prior to 5.2(1)SV3(4.1a). Nexus 3000 Series Switches are affected in versions prior to 7.0(3)I7(6) and 9.2(2). Nexus 3500 Platform Switches are affected in versions prior to 6.0(2)A8(11), 7.0(3)I7(6), and 9.2(2). Nexus 3600 Platform Switches are affected in versions prior to 7.0(3)F3(5) and 9.2(2). Nexus 5500, 5600, and 6000 Series Switches are affected in versions prior to 7.1(5)N1(1b) and 7.3(5)N1(1). Nexus 7000 and 7700 Series Switches are affected in versions prior to 6.2(22. Nexus 9500 R-Series Line Cards and Fabric Modules are affected in versions prior to 7.0(3)F3(5) and 9.2(2). UCS 6200 and 6300 Series Fabric Interconnect are affected in versions prior to 3.2(3j) and 4.0(2a). UCS 6400 Series Fabric Interconnect are affected in versions prior to 4.0(2a).

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

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

include('compat.inc');

if (description)
{
  script_id(501396);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/26");

  script_cve_id("CVE-2019-1599");

  script_name(english:"Cisco NX-OS Software Netstack Denial of Service (CVE-2019-1599)");

  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 network stack of Cisco NX-OS Software could
allow an unauthenticated, remote attacker to cause a denial of service
(DoS) condition on the affected device. The vulnerability is due to an
issue with allocating and freeing memory buffers in the network stack.
An attacker could exploit this vulnerability by sending crafted TCP
streams to an affected device in a sustained way. A successful exploit
could cause the network stack of an affected device to run out of
available buffers, impairing operations of control plane and
management plane protocols, resulting in a DoS condition. Note: This
vulnerability can be triggered only by traffic that is destined to an
affected device and cannot be exploited using traffic that transits an
affected device. Nexus 1000V Switch for Microsoft Hyper-V is affected
in versions prior to 5.2(1)SM3(2.1). Nexus 1000V Switch for VMware
vSphere is affected in versions prior to 5.2(1)SV3(4.1a). Nexus 3000
Series Switches are affected in versions prior to 7.0(3)I7(6) and
9.2(2). Nexus 3500 Platform Switches are affected in versions prior to
6.0(2)A8(11), 7.0(3)I7(6), and 9.2(2). Nexus 3600 Platform Switches
are affected in versions prior to 7.0(3)F3(5) and 9.2(2). Nexus 5500,
5600, and 6000 Series Switches are affected in versions prior to
7.1(5)N1(1b) and 7.3(5)N1(1). Nexus 7000 and 7700 Series Switches are
affected in versions prior to 6.2(22. Nexus 9500 R-Series Line Cards
and Fabric Modules are affected in versions prior to 7.0(3)F3(5) and
9.2(2). UCS 6200 and 6300 Series Fabric Interconnect are affected in
versions prior to 3.2(3j) and 4.0(2a). UCS 6400 Series Fabric
Interconnect are affected in versions prior to 4.0(2a).

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/107342");
  # https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxos-netstack
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?afa8810a");
  script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-1599");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(770);

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/03/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/03/07");
  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:"cpe", value:"cpe:/o:cisco:nx-os:9");
  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:9.2%282%29" :
        {"versionEndExcluding" : "9.2%282%29", "versionStartIncluding" : "9.2", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:7.0%283%29i7%285%29" :
        {"versionEndExcluding" : "7.0%283%29i7%285%29", "versionStartIncluding" : "7.0%283%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%285%29n1%281%29" :
        {"versionEndExcluding" : "7.3%285%29n1%281%29", "versionStartIncluding" : "7.2", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:8.3%282%29" :
        {"versionEndExcluding" : "8.3%282%29", "versionStartIncluding" : "8.3", "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:6.2%2822%29" :
        {"versionEndExcluding" : "6.2%2822%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:7.0%283%29i7%286%29" :
        {"versionEndExcluding" : "7.0%283%29i7%286%29", "versionStartIncluding" : "7.0%283%29i5", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:5.2%281%29sm3%282.1%29" :
        {"versionEndExcluding" : "5.2%281%29sm3%282.1%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:5.2%281%29sv3%284.1a%29" :
        {"versionEndExcluding" : "5.2%281%29sv3%284.1a%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:4.0%282a%29" :
        {"versionEndExcluding" : "4.0%282a%29", "versionStartIncluding" : "4.0", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:3.2%283j%29" :
        {"versionEndExcluding" : "3.2%283j%29", "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:7.1%285%29n1%281b%29" :
        {"versionEndExcluding" : "7.1%285%29n1%281b%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:8.2%283%29" :
        {"versionEndExcluding" : "8.2%283%29", "versionStartIncluding" : "8.0", "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);
VendorProductVersionCPE
cisconx-os3cpe:/o:cisco:nx-os:3
cisconx-os4cpe:/o:cisco:nx-os:4
cisconx-os5cpe:/o:cisco:nx-os:5
cisconx-os6cpe:/o:cisco:nx-os:6
cisconx-os7cpe:/o:cisco:nx-os:7
cisconx-os8cpe:/o:cisco:nx-os:8
cisconx-os9cpe:/o:cisco:nx-os:9

CVSS2

7.8

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS3

8.6

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

EPSS

0.002

Percentile

52.3%

Related for TENABLE_OT_CISCO_CVE-2019-1599.NASL