CVSS2
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
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
67.8%
Junos OS is prone to a denial of service vulnerability in jdhcpd due to
crafted DHCPv6 packets.
# 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("1.3.6.1.4.1.25623.1.0.106506");
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:"2017-01-12 09:12:17 +0700 (Thu, 12 Jan 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:3.0/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:"2019-10-03 00:03:00 +0000 (Thu, 03 Oct 2019)");
script_tag(name:"qod_type", value:"package");
script_tag(name:"solution_type", value:"VendorFix");
script_cve_id("CVE-2017-2301");
script_name("Juniper Networks Junos OS jdhcpd DoS Vulnerability");
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 in jdhcpd due to
crafted DHCPv6 packets.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable OS build is present on the target host.");
script_tag(name:"insight", value:"The Junos OS jdhcpd daemon provides advanced DHCP services to subscribers
on all major hardware platforms. An issue was discovered that can cause jdhcpd to crash and restart when a
crafted DHCPv6 packet is received from a subscriber. Repeated crashes of the jdhcpd process may constitute an
extended denial of service condition for subscribers attempting to obtain IPv6 addresses.
This issue only affects devices configured for DHCP services via IPv6 with either Server or Relay enabled. IPv4
is not vulnerable to this issue.");
script_tag(name:"impact", value:"An attacker may cause a denial of service condition.");
script_tag(name:"affected", value:"Junos OS 11.4, 12.1, 12.3, 13.2, 13.3, 14.1, 14.2 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/JSA10769");
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: "15.1F6") < 0) {
report = report_fixed_ver(installed_version: version, fixed_version: "15.1F6");
security_message(port: 0, data: report);
exit(0);
}
else if ((revcomp(a: version, b: "15.1R3") < 0) &&
(revcomp(a: version, b: "15.1R") >= 0)) {
report = report_fixed_ver(installed_version: version, fixed_version: "15.1R3");
security_message(port: 0, data: report);
exit(0);
}
else if ((revcomp(a: version, b: "15.1X49-D60") < 0) &&
(revcomp(a: version, b: "15.1X49") >= 0)) {
report = report_fixed_ver(installed_version: version, fixed_version: "15.1X49-D60");
security_message(port: 0, data: report);
exit(0);
}
else if ((revcomp(a: version, b: "15.1X53-D30") < 0) &&
(revcomp(a: version, b: "15.1X53") >= 0)) {
report = report_fixed_ver(installed_version: version, fixed_version: "15.1X53-D30");
security_message(port: 0, data: report);
exit(0);
}
}
if (version =~ "^14") {
if (revcomp(a: version, b: "14.1R8") < 0) {
report = report_fixed_ver(installed_version: version, fixed_version: "14.1R8");
security_message(port: 0, data: report);
exit(0);
}
else if ((revcomp(a: version, b: "14.1X53-D12") < 0) &&
(revcomp(a: version, b: "14.1X53") >= 0)) {
report = report_fixed_ver(installed_version: version, fixed_version: "14.1X53-D12");
security_message(port: 0, data: report);
exit(0);
}
else if ((revcomp(a: version, b: "14.1X55-D35") < 0) &&
(revcomp(a: version, b: "14.1X55") >= 0)) {
report = report_fixed_ver(installed_version: version, fixed_version: "14.1X55-D35");
security_message(port: 0, data: report);
exit(0);
}
else if ((revcomp(a: version, b: "14.2R7") < 0) &&
(revcomp(a: version, b: "14.2") >= 0)) {
report = report_fixed_ver(installed_version: version, fixed_version: "14.2R7");
security_message(port: 0, data: report);
exit(0);
}
}
if (version =~ "^13") {
if ((revcomp(a: version, b: "13.2X51-D40") < 0) &&
(revcomp(a: version, b: "13.2X51") >= 0)) {
report = report_fixed_ver(installed_version: version, fixed_version: "13.2X51-D40");
security_message(port: 0, data: report);
exit(0);
}
else if ((revcomp(a: version, b: "13.3R10") < 0) &&
(revcomp(a: version, b: "13.3") >= 0)) {
report = report_fixed_ver(installed_version: version, fixed_version: "13.3R10");
security_message(port: 0, data: report);
exit(0);
}
}
if (version =~ "^12") {
if ((revcomp(a: version, b: "12.1X46-D60") < 0) &&
(revcomp(a: version, b: "12.1X46") >= 0)) {
report = report_fixed_ver(installed_version: version, fixed_version: "12.1X46-D60");
security_message(port: 0, data: report);
exit(0);
}
}
if (version =~ "^11") {
if (revcomp(a: version, b: "11.4R13-S3") < 0) {
report = report_fixed_ver(installed_version: version, fixed_version: "11.4R13-S3");
security_message(port: 0, data: report);
exit(0);
}
}
exit(99);
CVSS2
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
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
67.8%