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Cisco IOS Software Layer 2 Tunneling Protocol Denial of Service Vulnerability (cisco-sa-20170322-l2tp)

🗓️ 23 Mar 2017 00:00:00Reported by Copyright (C) 2017 Greenbone AGType 
openvas
 openvas🔗 plugins.openvas.org👁 37 Views

The Cisco IOS Software Layer 2 Tunneling Protocol Denial of Service Vulnerability allows remote attackers to cause a device reload via a crafted L2TP packet

Related
Refs
Code
ReporterTitlePublishedViews
Family
bdu_fstec
BDU FSTEC		The vulnerability of the L2TP function in the Cisco IOS operating system allows a intruder to trigger a device reboot and a service failure.
18 May 201700:00
–bdu_fstec
cisco
Cisco		Cisco IOS and IOS XE Software Layer 2 Tunneling Protocol Denial of Service Vulnerability
22 Mar 201716:00
–cisco
nessus
Tenable Nessus		Cisco IOS L2TP Parsing DoS (cisco-sa-20170322-l2tp)
28 Mar 201700:00
–nessus
nessus
Tenable Nessus		Cisco IOS XE L2TP Parsing DoS (cisco-sa-20170322-l2tp)
28 Mar 201700:00
–nessus
cnvd
CNVD		Cisco IOS XE Software L2TP Message Denial of Service Vulnerability
23 Mar 201700:00
–cnvd
cve
CVE		CVE-2017-3857
22 Mar 201719:00
–cve
cvelist
Cvelist		CVE-2017-3857
22 Mar 201719:00
–cvelist
euvd
EUVD		EUVD-2017-12974
7 Oct 202500:30
–euvd
nvd
NVD		CVE-2017-3857
22 Mar 201719:59
–nvd
openvas
OpenVAS		Cisco IOS XE Software Layer 2 Tunneling Protocol Denial of Service Vulnerability
23 Mar 201700:00
–openvas
Rows per page
# SPDX-FileCopyrightText: 2017 Greenbone AG
# 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-only

CPE = "cpe:/o:cisco:ios";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.106686");
  script_version("2026-02-02T05:59:28+0000");
  script_tag(name:"last_modification", value:"2026-02-02 05:59:28 +0000 (Mon, 02 Feb 2026)");
  script_tag(name:"creation_date", value:"2017-03-23 10:02:11 +0700 (Thu, 23 Mar 2017)");
  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:3.1/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:"2020-07-27 16:59:00 +0000 (Mon, 27 Jul 2020)");

  script_cve_id("CVE-2017-3857");

  script_tag(name:"qod_type", value:"remote_banner");

  script_tag(name:"solution_type", value:"VendorFix");

  script_name("Cisco IOS Software Layer 2 Tunneling Protocol Denial of Service Vulnerability (cisco-sa-20170322-l2tp)");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_family("CISCO");
  script_dependencies("gb_cisco_ios_consolidation.nasl");
  script_mandatory_keys("cisco/ios/detected");

  script_tag(name:"summary", value:"A vulnerability in the Layer 2 Tunneling Protocol (L2TP)
  parsing function of Cisco IOS Software could allow an unauthenticated, remote attacker to cause
  an affected device to reload.");

  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 insufficient validation of L2TP
  packets. An attacker could exploit this vulnerability by sending a crafted L2TP packet to an
  affected device.");

  script_tag(name:"impact", value:"A successful exploit could allow the attacker to cause the
  affected device to reload, resulting in a denial of service (DoS) condition.");

  script_tag(name:"solution", value:"See the referenced vendor advisory for a solution.");

  script_xref(name:"URL", value:"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170322-l2tp");

  exit(0);
}

include("host_details.inc");
include("version_func.inc");

if( ! version = get_app_version( cpe:CPE, nofork:TRUE ) )
  exit( 0 );

affected = make_list(
  "12.0(33)S",
  "12.0(33)S1",
  "12.0(33)S10",
  "12.0(33)S11",
  "12.0(33)S2",
  "12.0(33)S3",
  "12.0(33)S4",
  "12.0(33)S5",
  "12.0(33)S6",
  "12.0(33)S7",
  "12.0(33)S8",
  "12.0(33)S9",
  "12.2(33)CX",
  "12.2(33)CY",
  "12.2(33)CY1",
  "12.2(33)IRA",
  "12.2(33)IRB",
  "12.2(33)IRC",
  "12.2(33)IRD",
  "12.2(33)IRE",
  "12.2(33)IRE1",
  "12.2(33)IRE2",
  "12.2(33)IRF",
  "12.2(33)IRG",
  "12.2(33)IRG1",
  "12.2(33)IRH",
  "12.2(33)IRH1",
  "12.2(33)IRI",
  "12.2(33)MRA",
  "12.2(33)MRB",
  "12.2(33)MRB1",
  "12.2(33)MRB2",
  "12.2(33)MRB3",
  "12.2(33)MRB4",
  "12.2(33)MRB5",
  "12.2(33)MRB6",
  "12.2(33)SB",
  "12.2(33)SB1",
  "12.2(33)SB10",
  "12.2(33)SB11",
  "12.2(33)SB12",
  "12.2(33)SB13",
  "12.2(33)SB14",
  "12.2(33)SB15",
  "12.2(33)SB16",
  "12.2(33)SB17",
  "12.2(33)SB2",
  "12.2(33)SB3",
  "12.2(33)SB4",
  "12.2(33)SB5",
  "12.2(33)SB6",
  "12.2(33)SB7",
  "12.2(33)SB8",
  "12.2(33)SB9",
  "12.2(33)SCA",
  "12.2(33)SCA1",
  "12.2(33)SCA2",
  "12.2(33)SCB",
  "12.2(33)SCB1",
  "12.2(33)SCB10",
  "12.2(33)SCB11",
  "12.2(33)SCB2",
  "12.2(33)SCB3",
  "12.2(33)SCB4",
  "12.2(33)SCB5",
  "12.2(33)SCB6",
  "12.2(33)SCB7",
  "12.2(33)SCB8",
  "12.2(33)SCB9",
  "12.2(33)SCC",
  "12.2(33)SCC1",
  "12.2(33)SCC2",
  "12.2(33)SCC3",
  "12.2(33)SCC4",
  "12.2(33)SCC5",
  "12.2(33)SCC6",
  "12.2(33)SCC7",
  "12.2(33)SCD",
  "12.2(33)SCD1",
  "12.2(33)SCD2",
  "12.2(33)SCD3",
  "12.2(33)SCD4",
  "12.2(33)SCD5",
  "12.2(33)SCD6",
  "12.2(33)SCD7",
  "12.2(33)SCD8",
  "12.2(33)SCE",
  "12.2(33)SCE1",
  "12.2(33)SCE2",
  "12.2(33)SCE3",
  "12.2(33)SCE4",
  "12.2(33)SCE5",
  "12.2(33)SCE6",
  "12.2(33)SCF",
  "12.2(33)SCF1",
  "12.2(33)SCF2",
  "12.2(33)SCF3",
  "12.2(33)SCF4",
  "12.2(33)SCF5",
  "12.2(33)SCG",
  "12.2(33)SCG1",
  "12.2(33)SCG2",
  "12.2(33)SCG3",
  "12.2(33)SCG4",
  "12.2(33)SCG5",
  "12.2(33)SCG6",
  "12.2(33)SCG7",
  "12.2(33)SCH",
  "12.2(33)SCH0a",
  "12.2(33)SCH1",
  "12.2(33)SCH2",
  "12.2(33)SCH2a",
  "12.2(33)SCH3",
  "12.2(33)SCH4",
  "12.2(33)SCH5",
  "12.2(33)SCH6",
  "12.2(33)SCI",
  "12.2(33)SCI1",
  "12.2(33)SCI1a",
  "12.2(33)SCI2",
  "12.2(33)SCI2a",
  "12.2(33)SCI3",
  "12.2(33)SCJ",
  "12.2(33)SCJ1a",
  "12.2(33)SCJ2",
  "12.2(33)SCJ2a",
  "12.2(33)SRB",
  "12.2(33)SRC",
  "12.2(33)SRC1",
  "12.2(33)SRC2",
  "12.2(33)SRC3",
  "12.2(33)SRC4",
  "12.2(33)SRC5",
  "12.2(33)SRC6",
  "12.2(33)SRD",
  "12.2(33)SRD1",
  "12.2(33)SRD2",
  "12.2(33)SRD2a",
  "12.2(33)SRD3",
  "12.2(33)SRD4",
  "12.2(33)SRD5",
  "12.2(33)SRD6",
  "12.2(33)SRD7",
  "12.2(33)SRD8",
  "12.2(33)SRE",
  "12.2(33)SRE0a",
  "12.2(33)SRE1",
  "12.2(33)SRE10",
  "12.2(33)SRE11",
  "12.2(33)SRE12",
  "12.2(33)SRE13",
  "12.2(33)SRE14",
  "12.2(33)SRE15",
  "12.2(33)SRE2",
  "12.2(33)SRE3",
  "12.2(33)SRE4",
  "12.2(33)SRE5",
  "12.2(33)SRE6",
  "12.2(33)SRE7",
  "12.2(33)SRE7a",
  "12.2(33)SRE8",
  "12.2(33)SRE9",
  "12.2(33)SRE9a",
  "12.2(33)XN1",
  "12.2(37)SE",
  "12.2(37)SE1",
  "12.2(37)SG1",
  "12.2(40)SE",
  "12.2(44)SE",
  "12.2(44)SE1",
  "12.2(44)SE2",
  "12.2(44)SE3",
  "12.2(44)SE5",
  "12.2(44)SE6",
  "12.2(46)SE",
  "12.2(50)SE",
  "12.2(50)SE1",
  "12.2(50)SE3",
  "12.2(50)SE4",
  "12.2(50)SE5",
  "12.2(50)SQ",
  "12.2(50)SQ1",
  "12.2(50)SQ2",
  "12.2(50)SQ3",
  "12.2(50)SQ4",
  "12.2(50)SQ5",
  "12.2(50)SQ6",
  "12.2(50)SQ7",
  "12.2(52)SE",
  "12.2(54)SE",
  "12.2(55)SE",
  "12.2(55)SE10",
  "12.2(55)SE11",
  "12.2(55)SE3",
  "12.2(55)SE4",
  "12.2(55)SE5",
  "12.2(55)SE6",
  "12.2(55)SE7",
  "12.2(55)SE8",
  "12.2(55)SE9",
  "12.2(58)EX",
  "12.2(58)EZ",
  "12.2(58)SE2",
  "12.2(60)EZ4",
  "12.2(60)EZ5",
  "12.4(11)MR",
  "12.4(11)SW",
  "12.4(11)SW1",
  "12.4(11)SW2",
  "12.4(11)SW3",
  "12.4(11)T",
  "12.4(11)T1",
  "12.4(11)T2",
  "12.4(11)T3",
  "12.4(11)T4",
  "12.4(11)XJ",
  "12.4(11)XJ2",
  "12.4(11)XJ3",
  "12.4(11)XJ4",
  "12.4(11)XV",
  "12.4(11)XV1",
  "12.4(11)XW",
  "12.4(11)XW1",
  "12.4(11)XW10",
  "12.4(11)XW2",
  "12.4(11)XW3",
  "12.4(11)XW4",
  "12.4(11)XW5",
  "12.4(11)XW6",
  "12.4(11)XW7",
  "12.4(11)XW8",
  "12.4(11)XW9",
  "12.4(12)MR",
  "12.4(12)MR1",
  "12.4(12)MR2",
  "12.4(14)XK",
  "12.4(15)SW",
  "12.4(15)SW1",
  "12.4(15)SW2",
  "12.4(15)SW3",
  "12.4(15)SW4",
  "12.4(15)SW5",
  "12.4(15)SW6",
  "12.4(15)SW7",
  "12.4(15)SW8",
  "12.4(15)SW8a",
  "12.4(15)SW9",
  "12.4(15)T",
  "12.4(15)T1",
  "12.4(15)T10",
  "12.4(15)T11",
  "12.4(15)T12",
  "12.4(15)T13",
  "12.4(15)T14",
  "12.4(15)T15",
  "12.4(15)T16",
  "12.4(15)T17",
  "12.4(15)T2",
  "12.4(15)T3",
  "12.4(15)T4",
  "12.4(15)T5",
  "12.4(15)T6",
  "12.4(15)T7",
  "12.4(15)T8",
  "12.4(15)T9",
  "12.4(15)XF",
  "12.4(15)XL",
  "12.4(15)XL1",
  "12.4(15)XL2",
  "12.4(15)XL3",
  "12.4(15)XL4",
  "12.4(15)XL5",
  "12.4(15)XM",
  "12.4(15)XM1",
  "12.4(15)XM2",
  "12.4(15)XM3",
  "12.4(15)XN",
  "12.4(15)XQ",
  "12.4(15)XQ1",
  "12.4(15)XQ2",
  "12.4(15)XQ2a",
  "12.4(15)XQ2b",
  "12.4(15)XQ3",
  "12.4(15)XQ4",
  "12.4(15)XQ5",
  "12.4(15)XQ6",
  "12.4(15)XQ7",
  "12.4(15)XQ8",
  "12.4(15)XR",
  "12.4(15)XR1",
  "12.4(15)XR10",
  "12.4(15)XR2",
  "12.4(15)XR3",
  "12.4(15)XR4",
  "12.4(15)XR5",
  "12.4(15)XR6",
  "12.4(15)XR7",
  "12.4(15)XR8",
  "12.4(15)XR9",
  "12.4(15)XY",
  "12.4(15)XY1",
  "12.4(15)XY2",
  "12.4(15)XY3",
  "12.4(15)XY4",
  "12.4(15)XY5",
  "12.4(15)XZ",
  "12.4(15)XZ1",
  "12.4(15)XZ2",
  "12.4(16)MR",
  "12.4(16)MR1",
  "12.4(16)MR2",
  "12.4(19)MR",
  "12.4(19)MR1",
  "12.4(19)MR2",
  "12.4(19)MR3",
  "12.4(20)MR",
  "12.4(20)MR2",
  "12.4(20)MRB",
  "12.4(20)MRB1",
  "12.4(20)T",
  "12.4(20)T1",
  "12.4(20)T2",
  "12.4(20)T3",
  "12.4(20)T4",
  "12.4(20)T5",
  "12.4(20)T6",
  "12.4(20)YA",
  "12.4(20)YA1",
  "12.4(20)YA2",
  "12.4(20)YA3",
  "12.4(22)GC1",
  "12.4(22)T",
  "12.4(22)T1",
  "12.4(22)T2",
  "12.4(22)T3",
  "12.4(22)T4",
  "12.4(22)T5",
  "12.4(22)XR1",
  "12.4(22)XR10",
  "12.4(22)XR11",
  "12.4(22)XR12",
  "12.4(22)XR2",
  "12.4(22)XR3",
  "12.4(22)XR4",
  "12.4(22)XR5",
  "12.4(22)XR6",
  "12.4(22)XR7",
  "12.4(22)XR8",
  "12.4(22)XR9",
  "12.4(22)YB",
  "12.4(22)YB1",
  "12.4(22)YB2",
  "12.4(22)YB3",
  "12.4(22)YB4",
  "12.4(22)YB5",
  "12.4(22)YB6",
  "12.4(22)YB7",
  "12.4(22)YB8",
  "12.4(22)YD",
  "12.4(22)YD1",
  "12.4(22)YD2",
  "12.4(22)YD3",
  "12.4(22)YD4",
  "12.4(22)YE",
  "12.4(22)YE1",
  "12.4(22)YE2",
  "12.4(22)YE3",
  "12.4(22)YE4",
  "12.4(22)YE5",
  "12.4(22)YE6",
  "12.4(24)GC1",
  "12.4(24)GC3",
  "12.4(24)GC3a",
  "12.4(24)GC4",
  "12.4(24)GC5",
  "12.4(24)T",
  "12.4(24)T1",
  "12.4(24)T2",
  "12.4(24)T3",
  "12.4(24)T3e",
  "12.4(24)T3f",
  "12.4(24)T4",
  "12.4(24)T4a",
  "12.4(24)T4b",
  "12.4(24)T4c",
  "12.4(24)T4d",
  "12.4(24)T4e",
  "12.4(24)T4f",
  "12.4(24)T4l",
  "12.4(24)T5",
  "12.4(24)T6",
  "12.4(24)T7",
  "12.4(24)T8",
  "12.4(24)YE",
  "12.4(24)YE1",
  "12.4(24)YE2",
  "12.4(24)YE3",
  "12.4(24)YE3a",
  "12.4(24)YE3b",
  "12.4(24)YE3c",
  "12.4(24)YE3d",
  "12.4(24)YE3e",
  "12.4(24)YE4",
  "12.4(24)YE5",
  "12.4(24)YE6",
  "12.4(24)YE7",
  "12.4(24)YG1",
  "12.4(24)YG2",
  "12.4(24)YG3",
  "12.4(24)YG4",
  "15.0(1)EX",
  "15.0(1)M",
  "15.0(1)M1",
  "15.0(1)M10",
  "15.0(1)M2",
  "15.0(1)M3",
  "15.0(1)M4",
  "15.0(1)M5",
  "15.0(1)M6",
  "15.0(1)M7",
  "15.0(1)M8",
  "15.0(1)M9",
  "15.0(1)MR",
  "15.0(1)S",
  "15.0(1)S1",
  "15.0(1)S2",
  "15.0(1)S3a",
  "15.0(1)S4",
  "15.0(1)S4a",
  "15.0(1)S5",
  "15.0(1)S6",
  "15.0(1)XA",
  "15.0(1)XA1",
  "15.0(1)XA2",
  "15.0(1)XA3",
  "15.0(1)XA4",
  "15.0(1)XA5",
  "15.0(2)MR",
  "15.0(2)SQD",
  "15.0(2)SQD1",
  "15.0(2)SQD2",
  "15.0(2)SQD3",
  "15.0(2)SQD4",
  "15.1(1)MR",
  "15.1(1)MR1",
  "15.1(1)MR2",
  "15.1(1)MR3",
  "15.1(1)MR4",
  "15.1(1)S",
  "15.1(1)S1",
  "15.1(1)S2",
  "15.1(1)T",
  "15.1(1)T1",
  "15.1(1)T2",
  "15.1(1)T3",
  "15.1(1)T4",
  "15.1(1)T5",
  "15.1(1)XB",
  "15.1(2)EY",
  "15.1(2)EY1a",
  "15.1(2)EY2",
  "15.1(2)EY2a",
  "15.1(2)EY3",
  "15.1(2)EY4",
  "15.1(2)GC",
  "15.1(2)GC1",
  "15.1(2)GC2",
  "15.1(2)S",
  "15.1(2)S1",
  "15.1(2)S2",
  "15.1(2)SNG",
  "15.1(2)SNH",
  "15.1(2)SNI",
  "15.1(2)SNI1",
  "15.1(2)SY",
  "15.1(2)T",
  "15.1(2)T0a",
  "15.1(2)T1",
  "15.1(2)T2",
  "15.1(2)T2a",
  "15.1(2)T3",
  "15.1(2)T4",
  "15.1(2)T5",
  "15.1(3)MR",
  "15.1(3)MRA",
  "15.1(3)MRA1",
  "15.1(3)MRA2",
  "15.1(3)S",
  "15.1(3)S0a",
  "15.1(3)S1",
  "15.1(3)S2",
  "15.1(3)S3",
  "15.1(3)S4",
  "15.1(3)S5",
  "15.1(3)S5a",
  "15.1(3)S6",
  "15.1(3)T",
  "15.1(3)T1",
  "15.1(3)T2",
  "15.1(3)T3",
  "15.1(3)T4",
  "15.1(4)GC",
  "15.1(4)GC1",
  "15.1(4)GC2",
  "15.1(4)M",
  "15.1(4)M1",
  "15.1(4)M10",
  "15.1(4)M2",
  "15.1(4)M3",
  "15.1(4)M3a",
  "15.1(4)M4",
  "15.1(4)M5",
  "15.1(4)M6",
  "15.1(4)M7",
  "15.1(4)M8",
  "15.1(4)M9",
  "15.2(1)GC",
  "15.2(1)GC1",
  "15.2(1)GC2",
  "15.2(1)S",
  "15.2(1)S1",
  "15.2(1)S2",
  "15.2(1)T",
  "15.2(1)T1",
  "15.2(1)T2",
  "15.2(1)T3",
  "15.2(1)T3a",
  "15.2(1)T4",
  "15.2(2)GC",
  "15.2(2)JB",
  "15.2(2)JB2",
  "15.2(2)JB3",
  "15.2(2)JB4",
  "15.2(2)JB5",
  "15.2(2)JB6",
  "15.2(2)S",
  "15.2(2)S0a",
  "15.2(2)S0c",
  "15.2(2)S1",
  "15.2(2)S2",
  "15.2(2)SNG",
  "15.2(2)SNH1",
  "15.2(2)SNI",
  "15.2(2)T",
  "15.2(2)T1",
  "15.2(2)T2",
  "15.2(2)T3",
  "15.2(2)T4",
  "15.2(3)GC",
  "15.2(3)GC1",
  "15.2(3)T",
  "15.2(3)T1",
  "15.2(3)T2",
  "15.2(3)T3",
  "15.2(3)T4",
  "15.2(4)GC",
  "15.2(4)GC1",
  "15.2(4)GC2",
  "15.2(4)GC3",
  "15.2(4)JA",
  "15.2(4)JA1",
  "15.2(4)JB",
  "15.2(4)JB1",
  "15.2(4)JB2",
  "15.2(4)JB3",
  "15.2(4)JB3a",
  "15.2(4)JB3b",
  "15.2(4)JB3h",
  "15.2(4)JB3s",
  "15.2(4)JB4",
  "15.2(4)JB5",
  "15.2(4)JB50",
  "15.2(4)JB5h",
  "15.2(4)JB5m",
  "15.2(4)JB6",
  "15.2(4)JB7",
  "15.2(4)JN",
  "15.2(4)M",
  "15.2(4)M1",
  "15.2(4)M10",
  "15.2(4)M11",
  "15.2(4)M2",
  "15.2(4)M3",
  "15.2(4)M4",
  "15.2(4)M5",
  "15.2(4)M6",
  "15.2(4)M6a",
  "15.2(4)M7",
  "15.2(4)M8",
  "15.2(4)M9",
  "15.2(4)S",
  "15.2(4)S1",
  "15.2(4)S2",
  "15.2(4)S3",
  "15.2(4)S3a",
  "15.2(4)S4",
  "15.2(4)S4a",
  "15.2(4)S5",
  "15.2(4)S6",
  "15.2(4)S7",
  "15.3(1)S",
  "15.3(1)S1",
  "15.3(1)S2",
  "15.3(1)T",
  "15.3(1)T1",
  "15.3(1)T2",
  "15.3(1)T3",
  "15.3(1)T4",
  "15.3(2)S",
  "15.3(2)S1",
  "15.3(2)S2",
  "15.3(2)T",
  "15.3(2)T1",
  "15.3(2)T2",
  "15.3(2)T3",
  "15.3(2)T4",
  "15.3(3)JA",
  "15.3(3)JA1",
  "15.3(3)JA10",
  "15.3(3)JA1m",
  "15.3(3)JA1n",
  "15.3(3)JA4",
  "15.3(3)JA5",
  "15.3(3)JA6",
  "15.3(3)JA7",
  "15.3(3)JA77",
  "15.3(3)JA8",
  "15.3(3)JA9",
  "15.3(3)JAA",
  "15.3(3)JAB",
  "15.3(3)JAX",
  "15.3(3)JAX1",
  "15.3(3)JAX2",
  "15.3(3)JB",
  "15.3(3)JB75",
  "15.3(3)JBB",
  "15.3(3)JBB1",
  "15.3(3)JBB2",
  "15.3(3)JBB4",
  "15.3(3)JBB5",
  "15.3(3)JBB50",
  "15.3(3)JBB6",
  "15.3(3)JBB6a",
  "15.3(3)JBB8",
  "15.3(3)JC",
  "15.3(3)JC1",
  "15.3(3)JC2",
  "15.3(3)JC3",
  "15.3(3)JC4",
  "15.3(3)JD",
  "15.3(3)JD2",
  "15.3(3)JN3",
  "15.3(3)JN4",
  "15.3(3)JN7",
  "15.3(3)JN8",
  "15.3(3)JNB",
  "15.3(3)JNB1",
  "15.3(3)JNB2",
  "15.3(3)JNB3",
  "15.3(3)JNC",
  "15.3(3)JNC1",
  "15.3(3)JNP",
  "15.3(3)JNP1",
  "15.3(3)JNP2",
  "15.3(3)JPB",
  "15.3(3)M",
  "15.3(3)M1",
  "15.3(3)M2",
  "15.3(3)M3",
  "15.3(3)M4",
  "15.3(3)M5",
  "15.3(3)M6",
  "15.3(3)M7",
  "15.3(3)M8",
  "15.3(3)M8a",
  "15.3(3)S",
  "15.3(3)S1",
  "15.3(3)S1a",
  "15.3(3)S2",
  "15.3(3)S3",
  "15.3(3)S4",
  "15.3(3)S5",
  "15.3(3)S6",
  "15.3(3)S7",
  "15.3(3)S8",
  "15.3(3)S8a",
  "15.4(1)CG",
  "15.4(1)CG1",
  "15.4(1)S",
  "15.4(1)S1",
  "15.4(1)S2",
  "15.4(1)S3",
  "15.4(1)S4",
  "15.4(1)T",
  "15.4(1)T1",
  "15.4(1)T2",
  "15.4(1)T3",
  "15.4(1)T4",
  "15.4(2)CG",
  "15.4(2)S1",
  "15.4(2)S2",
  "15.4(2)S3",
  "15.4(2)S4",
  "15.4(2)T",
  "15.4(2)T1",
  "15.4(2)T2",
  "15.4(2)T3",
  "15.4(2)T4",
  "15.4(3)M",
  "15.4(3)M1",
  "15.4(3)M2",
  "15.4(3)M3",
  "15.4(3)M4",
  "15.4(3)M5",
  "15.4(3)M6",
  "15.4(3)M6a",
  "15.4(3)S",
  "15.4(3)S1",
  "15.4(3)S2",
  "15.4(3)S3",
  "15.4(3)S4",
  "15.4(3)S5",
  "15.5(1)S",
  "15.5(1)S1",
  "15.5(1)S2",
  "15.5(1)S3",
  "15.5(1)S4",
  "15.5(1)T",
  "15.5(1)T1",
  "15.5(1)T2",
  "15.5(1)T3",
  "15.5(1)T4",
  "15.5(2)S",
  "15.5(2)S1",
  "15.5(2)S2",
  "15.5(2)S3",
  "15.5(2)S4",
  "15.5(2)T",
  "15.5(2)T1",
  "15.5(2)T2",
  "15.5(2)T3",
  "15.5(2)T4",
  "15.5(3)M",
  "15.5(3)M0a",
  "15.5(3)M1",
  "15.5(3)M2",
  "15.5(3)M3",
  "15.5(3)M4",
  "15.5(3)M4a",
  "15.5(3)S",
  "15.5(3)S0a",
  "15.5(3)S1",
  "15.5(3)S1a",
  "15.5(3)S2",
  "15.5(3)SN",
  "15.6(1)S",
  "15.6(1)S1",
  "15.6(1)T",
  "15.6(1)T0a",
  "15.6(1)T1",
  "15.6(1)T2",
  "15.6(2)S",
  "15.6(2)T" );

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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02 Feb 2026 00:00Current
7.3High risk
Vulners AI Score7.3
CVSS 3.17.5
CVSS 27.8
EPSS0.02593
cisco ios softwarelayer 2 tunneling protocoldenial of servicevulnerabilityremote attackerdevice reloadcrafted l2tp packet
37