5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
0.002 Low
EPSS
Percentile
57.0%
Junos OS on EX4300 Series is prone to a Denial of Service vulnerability.
# SPDX-FileCopyrightText: 2016 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:juniper:junos";
if (description)
{
script_oid("1.3.6.1.4.1.25623.1.0.106058");
script_version("2023-07-20T05:05:17+0000");
script_tag(name:"last_modification", value:"2023-07-20 05:05:17 +0000 (Thu, 20 Jul 2023)");
script_tag(name:"creation_date", value:"2016-01-18 09:17:30 +0700 (Mon, 18 Jan 2016)");
script_tag(name:"cvss_base", value:"5.0");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2016-12-03 03:20:00 +0000 (Sat, 03 Dec 2016)");
script_tag(name:"qod_type", value:"package");
script_tag(name:"solution_type", value:"VendorFix");
script_cve_id("CVE-2016-1260");
script_name("Juniper Networks Junos OS EX4300 Series Network Topology DoS Vulnerability");
script_category(ACT_GATHER_INFO);
script_family("JunOS Local Security Checks");
script_copyright("Copyright (C) 2016 Greenbone AG");
script_dependencies("gb_juniper_junos_consolidation.nasl");
script_mandatory_keys("juniper/junos/detected", "juniper/junos/model");
script_tag(name:"summary", value:"Junos OS on EX4300 Series is prone to a Denial of Service vulnerability.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable OS build is present on the target host.");
script_tag(name:"insight", value:"A certain type of legitimate traffic which can be maliciously
crafted or may be valid traffic for networking requirements in customer sites received from ingress
interfaces through the EX-PFE leak out blocked Spanning Tree Protocol egress interfaces creating an
artificial loop in network topology. This can lead to a high bandwidth usage denial of service condition.
Continued packets can create a persistent denial of service condition.");
script_tag(name:"impact", value:"A network based attacker can create high network bandwidth
usage denial of service condition.");
script_tag(name:"affected", value:"Junos OS 13.2, 14.1 and 15.1");
script_tag(name:"solution", value:"New builds of Junos OS software are available from Juniper.");
script_xref(name:"URL", value:"http://kb.juniper.net/JSA10719");
exit(0);
}
include("host_details.inc");
include("revisions-lib.inc");
model = get_kb_item("juniper/junos/model");
if (!model || model !~ '^EX4300')
exit(99);
if (!version = get_app_version(cpe: CPE, nofork: TRUE))
exit(0);
if ((revcomp(a: version, b: "13.2X51-D36") < 0) &&
(revcomp(a: version, b: "13.2X51") >= 0)) {
security_message(port: 0, data: version);
exit(0);
}
else if ((revcomp(a: version, b: "14.1X53-D25") < 0) &&
(revcomp(a: version, b: "14.1X53") >= 0)) {
security_message(port: 0, data: version);
exit(0);
}
else if ((revcomp(a: version, b: "15.2R1") < 0) &&
(revcomp(a: version, b: "15.1") >= 0)) {
security_message(port: 0, data: version);
exit(0);
}
exit(99);
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
0.002 Low
EPSS
Percentile
57.0%