6.2 Medium
AI Score
Confidence
Low
5 Medium
CVSS2
Access Vector
NETWORK
Access 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
0.967 High
EPSS
Percentile
99.6%
DoS in NTP server
# SPDX-FileCopyrightText: 2014 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("1.3.6.1.4.1.25623.1.0.105920");
script_version("2023-07-26T05:05:09+0000");
script_tag(name:"last_modification", value:"2023-07-26 05:05:09 +0000 (Wed, 26 Jul 2023)");
script_tag(name:"creation_date", value:"2014-07-31 13:20:03 +0200 (Thu, 31 Jul 2014)");
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:"qod_type", value:"package");
script_tag(name:"solution_type", value:"VendorFix");
script_cve_id("CVE-2013-5211");
script_name("Juniper Networks Junos OS NTP Server Amplification Denial of Service Vulnerability");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2014 Greenbone AG");
script_family("JunOS Local Security Checks");
script_dependencies("gb_juniper_junos_consolidation.nasl");
script_mandatory_keys("juniper/junos/detected");
script_tag(name:"summary", value:"DoS in NTP server");
script_tag(name:"vuldetect", value:"Checks if a vulnerable OS build is present on the target host.");
script_tag(name:"insight", value:"When an NTP client or server is enabled within the [edit system
ntp] hierarchy level of the Junos configuration, REQ_MON_GETLIST and REQ_MON_GETLIST_1 control messages
supported by the monlist feature within NTP may allow remote attackers to cause a denial of service. NTP
is not enabled in Junos by default.");
script_tag(name:"impact", value:"If NTP is enabled an attacker can exploit the control messages to use
it as part of a DoS attack against a remote victim or as the target of an attack against the device itself.");
script_tag(name:"affected", value:"Junos OS 11.4, 12.1, 12.2, 12.3, 13.1, 13.2, 13.3");
script_tag(name:"solution", value:"New builds of Junos OS software are available from Juniper.");
script_xref(name:"URL", value:"http://kb.juniper.net/JSA10613");
script_xref(name:"URL", value:"http://www.securityfocus.com/bid/64692");
exit(0);
}
include("host_details.inc");
include("revisions-lib.inc");
if (!version = get_app_version(cpe: CPE, nofork: TRUE))
exit(0);
if (revcomp(a:version, b:"11.4R12") < 0) {
security_message(port:0, data:version);
exit(0);
}
if (version =~ "^12") {
if (revcomp(a:version, b:"12.1R10") < 0) {
security_message(port:0, data:version);
exit(0);
}
else if ((revcomp(a:version, b:"12.1X44-D35") < 0) &&
(revcomp(a:version, b:"12.1X44") >= 0)) {
security_message(port:0, data:version);
exit(0);
}
else if ((revcomp(a:version, b:"12.1X45-D25") < 0) &&
(revcomp(a:version, b:"12.1X45") >= 0)) {
security_message(port:0, data:version);
exit(0);
}
else if ((revcomp(a:version, b:"12.1X46-D15") < 0) &&
(revcomp(a:version, b:"12.1X46") >= 0)) {
security_message(port:0, data:version);
exit(0);
}
else if ((revcomp(a:version, b:"12.1X47-D10") < 0) &&
(revcomp(a:version, b:"12.1X47") >= 0)) {
security_message(port:0, data:version);
exit(0);
}
else if ((revcomp(a:version, b:"12.2R8") < 0) &&
(revcomp(a:version, b:"12.2") >= 0)) {
security_message(port:0, data:version);
exit(0);
}
else if ((revcomp(a:version, b:"12.3R7") < 0) &&
(revcomp(a:version, b:"12.3") >= 0)) {
security_message(port:0, data:version);
exit(0);
}
}
if (version =~ "^13") {
if (revcomp(a:version, b:"13.1R4-S2") < 0) {
security_message(port:0, data:version);
exit(0);
}
else if ((revcomp(a:version, b:"13.2R4") < 0) &&
(revcomp(a:version, b:"13.2") >= 0)) {
security_message(port:0, data:version);
exit(0);
}
else if ((revcomp(a:version, b:"13.3R2") < 0) &&
(revcomp(a:version, b:"13.3") >= 0)) {
security_message(port:0, data:version);
exit(0);
}
}