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
65.0%
Junos OS is prone to a denial of service vulnerability while handling IPv6
ND advertisements.
# 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:juniper:junos";
if (description)
{
script_oid("1.3.6.1.4.1.25623.1.0.106749");
script_version("2023-07-14T16:09:27+0000");
script_tag(name:"last_modification", value:"2023-07-14 16:09:27 +0000 (Fri, 14 Jul 2023)");
script_tag(name:"creation_date", value:"2017-04-13 08:24:49 +0200 (Thu, 13 Apr 2017)");
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:"2017-07-11 01:33:00 +0000 (Tue, 11 Jul 2017)");
script_cve_id("CVE-2017-2340");
script_tag(name:"qod_type", value:"package");
script_tag(name:"solution_type", value:"VendorFix");
script_name("Juniper Networks Junos OS PFE DoS Vulnerabilities");
script_category(ACT_GATHER_INFO);
script_family("JunOS Local Security Checks");
script_copyright("Copyright (C) 2017 Greenbone AG");
script_dependencies("gb_juniper_junos_consolidation.nasl");
script_mandatory_keys("juniper/junos/detected");
script_tag(name:"summary", value:"Junos OS is prone to a denial of service vulnerability while handling IPv6
ND advertisements.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable OS build is present on the target host.");
script_tag(name:"insight", value:"A vulnerability in processing IPv6 ND packets originating from subscribers
and destined to M/MX series routers configured with Enhanced Subscriber Management for DHCPv6 subscribers can
result in a PFE (Packet Forwarding Engine) hang or crash.
This issue does not affect devices with only IPv4 configured.");
script_tag(name:"impact", value:"An attacker may cause a denial of service condition.");
script_tag(name:"affected", value:"Junos OS 15.1 and 16.1");
script_tag(name:"solution", value:"New builds of Junos OS software are available from Juniper.");
script_xref(name:"URL", value:"http://kb.juniper.net/JSA10786");
exit(0);
}
include("host_details.inc");
include("revisions-lib.inc");
include("version_func.inc");
if (!version = get_app_version(cpe: CPE, nofork: TRUE))
exit(0);
if (version =~ "^15") {
if ((revcomp(a: version, b: "15.1R5") < 0) &&
(revcomp(a: version, b: "15.1R3") >= 0)) {
report = report_fixed_ver(installed_version: version, fixed_version: "15.1R5");
security_message(port: 0, data: report);
exit(0);
}
}
if (version =~ "^16\.1") {
if (revcomp(a: version, b: "16.1R3") < 0) {
report = report_fixed_ver(installed_version: version, fixed_version: "16.1R3");
security_message(port: 0, data: report);
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
65.0%