Cisco NX-OS Software TCP Netstack Denial of Service Vulnerability (cisco-sa-20160302-netstack)
🗓️ 04 May 2016 00:00:00Reported by Copyright (C) 2016 Greenbone Networks GmbHType 
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| Reporter | Title | Published | Views | Family All 10 |
|---|---|---|---|---|
 | The vulnerability of the NX-OS network operating system allows a hacker to induce a maintenance failure. | 31 Mar 201600:00 | – | bdu_fstec |
 | Cisco NX-OS Software TCP Netstack Denial of Service Vulnerability | 2 Mar 201616:00 | – | cisco |
 | Cisco Nexus TCP Packet TIME_WAIT State Handling DoS (cisco-sa-20160302-netstack) | 9 Mar 201600:00 | – | nessus |
| Cisco Unified Computing System Resource Management Errors (CVE-2015-0718) | 4 Dec 202400:00 | – | nessus |
 | Cisco NX-OS Software Denial of Service Vulnerability (CNVD-2016-01460) | 4 Mar 201600:00 | – | cnvd |
 | CVE-2015-0718 | 3 Mar 201622:00 | – | cve |
 | CVE-2015-0718 | 3 Mar 201622:00 | – | cvelist |
 | EUVD-2015-0731 | 7 Oct 202500:30 | – | euvd |
 | CVE-2015-0718 | 3 Mar 201622:59 | – | nvd |
 | Code injection | 3 Mar 201622:59 | – | prion |
# Copyright (C) 2016 Greenbone Networks GmbH
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
CPE = "cpe:/o:cisco:nx-os";
if (description)
{
script_oid("1.3.6.1.4.1.25623.1.0.105645");
script_version("2022-12-26T10:12:01+0000");
script_tag(name:"last_modification", value:"2022-12-26 10:12:01 +0000 (Mon, 26 Dec 2022)");
script_tag(name:"creation_date", value:"2016-05-04 14:16:24 +0200 (Wed, 04 May 2016)");
script_tag(name:"cvss_base", value:"7.8");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:C");
script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2016-12-03 03:02:00 +0000 (Sat, 03 Dec 2016)");
script_cve_id("CVE-2015-0718");
script_tag(name:"qod_type", value:"remote_banner");
script_tag(name:"solution_type", value:"VendorFix");
script_name("Cisco NX-OS Software TCP Netstack Denial of Service Vulnerability (cisco-sa-20160302-netstack)");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2016 Greenbone Networks GmbH");
script_family("CISCO");
script_dependencies("gb_cisco_nx_os_consolidation.nasl");
script_mandatory_keys("cisco/nx_os/detected", "cisco/nx_os/device", "cisco/nx_os/model");
script_tag(name:"summary", value:"A vulnerability in the TCP stack of Cisco NX-OS Software could
allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"insight", value:"The vulnerability is due to improper processing of certain TCP
packets in the closing sequence of a TCP session while the affected device is in a TIME_WAIT
state. An attacker could exploit this vulnerability by sending a specific TCP packet to an
affected device on a TCP session that is already in a TIME_WAIT state.");
script_tag(name:"impact", value:"An exploit could allow the attacker to cause a reload of the TCP
stack on the affected device, resulting in a DoS condition.");
script_tag(name:"solution", value:"See the referenced vendor advisory for a solution.");
script_xref(name:"URL", value:"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160302-netstack");
exit(0);
}
include("host_details.inc");
include("version_func.inc");
if( ! device = get_kb_item( "cisco/nx_os/device" ) )
exit( 0 );
if( "Nexus" >!< device )
exit( 0 );
if ( ! nx_model = get_kb_item( "cisco/nx_os/model" ) )
exit( 0 );
if( ! version = get_app_version( cpe:CPE, nofork:TRUE ) )
exit( 0 );
if( nx_model =~ "^C?3[0-9]+" ) {
affected = make_list("5.0(3)U1(1)",
"5.0(3)U1(1a)",
"5.0(3)U1(1b)",
"5.0(3)U1(1d)",
"5.0(3)U1(2)",
"5.0(3)U1(2a)",
"5.0(3)U2(1)",
"5.0(3)U2(2)",
"5.0(3)U2(2a)",
"5.0(3)U2(2b)",
"5.0(3)U2(2c)",
"5.0(3)U2(2d)",
"5.0(3)U3(1)",
"5.0(3)U3(2)",
"5.0(3)U3(2a)",
"5.0(3)U3(2b)",
"5.0(3)U4(1)",
"5.0(3)U5(1)",
"5.0(3)U5(1a)",
"5.0(3)U5(1b)",
"5.0(3)U5(1c)",
"5.0(3)U5(1d)",
"5.0(3)U5(1e)",
"5.0(3)U5(1f)",
"5.0(3)U5(1g)",
"5.0(3)U5(1h)",
"6.0(2)U1(1)",
"6.0(2)U1(1a)",
"6.0(2)U1(2)",
"6.0(2)U1(3)",
"6.0(2)U1(4)",
"6.0(2)U2(1)",
"6.0(2)U2(2)");
}
if( nx_model =~ "^C?4[0-9]+" ) {
affected = make_list("4.1(2)E1(1)",
"4.1(2)E1(1b)",
"4.1(2)E1(1c)",
"4.1(2)E1(1d)",
"4.1(2)E1(1e)",
"4.1(2)E1(1f)",
"4.1(2)E1(1g)",
"4.1(2)E1(1h)",
"4.1(2)E1(1i)",
"4.1(2)E1(1j)",
"4.1(2)E1(1k)",
"4.1(2)E1(1m)");
}
if( nx_model =~ "^C?5[0-9]+" ) {
affected = make_list("4.0(0)N1(1a)",
"4.0(0)N1(2)",
"4.0(0)N1(2a)",
"4.0(1a)N1(1)",
"4.0(1a)N1(1a)",
"4.0(1a)N2(1)",
"4.0(1a)N2(1a)",
"4.1(3)N1(1)",
"4.1(3)N1(1a)",
"4.1(3)N2(1)",
"4.1(3)N2(1a)",
"4.2(1)N1(1)",
"4.2(1)N2(1)",
"4.2(1)N2(1a)",
"5.0(2)N1(1)",
"5.0(3)N1(1c)",
"5.0(2)N2(1)",
"5.0(2)N2(1a)",
"5.0(3)N2(1)",
"5.0(3)N2(2)",
"5.0(3)N2(2a)",
"5.0(3)N2(2b)",
"5.1(3)N1(1)",
"5.1(3)N1(1a)",
"5.1(3)N2(1)",
"5.1(3)N2(1a)",
"5.1(3)N2(1b)",
"5.1(3)N2(1c)",
"5.2(1)N1(1)",
"5.2(1)N1(1a)",
"5.2(1)N1(1b)",
"5.2(1)N1(2)",
"5.2(1)N1(2a)",
"5.2(1)N1(3)",
"5.2(1)N1(4)",
"5.2(1)N1(5)",
"5.2(1)N1(6)",
"5.2(1)N1(7)",
"5.2(1)N1(8)",
"5.2(1)N1(8a)");
}
if( nx_model =~ "^C?6[0-9]+" ) {
affected = make_list("6.0(2)N1(2)",
"6.0(2)N1(2a)",
"6.0(2)N2(1)",
"6.0(2)N2(1b)",
"6.0(2)N2(2)",
"6.0(2)N2(3)",
"6.0(2)N2(4)",
"6.0(2)N2(5)",
"6.0(2)N2(5a)",
"6.0(2)N2(6)");
}
if( nx_model =~ "^C?7[0-9]+" ) {
affected = make_list("4.1.(2)",
"4.1.(3)",
"4.1.(4)",
"4.1.(5)",
"4.2.(2a)",
"4.2(3)",
"4.2(4)",
"4.2(6)",
"4.2(8)",
"5.0(2a)",
"5.0(3)",
"5.0(5)",
"5.1(1)",
"5.1(1a)",
"5.1(3)",
"5.1(4)",
"5.1(5)",
"5.1(6)",
"5.2(1)",
"5.2(3a)",
"5.2(4)",
"5.2(5)",
"5.2(7)",
"6.0(1)",
"6.0(2)",
"6.0(3)",
"6.0(4)",
"6.1(1)",
"6.1(2)",
"6.1(3)");
}
if( "1000V" >< nx_model ) {
affected = make_list("4.0(4)SV1(1)",
"4.0(4)SV1(2)",
"4.0(4)SV1(3)",
"4.0(4)SV1(3a)",
"4.0(4)SV1(3b)",
"4.0(4)SV1(3c)",
"4.0(4)SV1(3d)");
}
if( affected ) {
foreach af ( affected ) {
if( version == af ) {
report = report_fixed_ver( installed_version:version, fixed_version:"See advisory" );
security_message( port:0, data:report );
exit( 0 );
}
}
}
exit( 99 );
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26 Dec 2022 00:00Current
7.5High risk
Vulners AI Score7.5
CVSS 37.5
CVSS 27.8
EPSS0.03944