Vulnerabilities > CVE-2016-9310 - Resource Exhaustion vulnerability in NTP 4.2.4/4.2.7/4.2.8
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
LOW Integrity impact
NONE Availability impact
LOW Summary
The control mode (mode 6) functionality in ntpd in NTP before 4.2.8p9 allows remote attackers to set or unset traps via a crafted control mode packet.
Vulnerable Configurations
Part | Description | Count |
---|---|---|
Application | 3 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- XML Ping of the Death An attacker initiates a resource depletion attack where a large number of small XML messages are delivered at a sufficiently rapid rate to cause a denial of service or crash of the target. Transactions such as repetitive SOAP transactions can deplete resources faster than a simple flooding attack because of the additional resources used by the SOAP protocol and the resources necessary to process SOAP messages. The transactions used are immaterial as long as they cause resource utilization on the target. In other words, this is a normal flooding attack augmented by using messages that will require extra processing on the target.
- XML Entity Expansion An attacker submits an XML document to a target application where the XML document uses nested entity expansion to produce an excessively large output XML. XML allows the definition of macro-like structures that can be used to simplify the creation of complex structures. However, this capability can be abused to create excessive demands on a processor's CPU and memory. A small number of nested expansions can result in an exponential growth in demands on memory.
- Inducing Account Lockout An attacker leverages the security functionality of the system aimed at thwarting potential attacks to launch a denial of service attack against a legitimate system user. Many systems, for instance, implement a password throttling mechanism that locks an account after a certain number of incorrect log in attempts. An attacker can leverage this throttling mechanism to lock a legitimate user out of their own account. The weakness that is being leveraged by an attacker is the very security feature that has been put in place to counteract attacks.
- Violating Implicit Assumptions Regarding XML Content (aka XML Denial of Service (XDoS)) XML Denial of Service (XDoS) can be applied to any technology that utilizes XML data. This is, of course, most distributed systems technology including Java, .Net, databases, and so on. XDoS is most closely associated with web services, SOAP, and Rest, because remote service requesters can post malicious XML payloads to the service provider designed to exhaust the service provider's memory, CPU, and/or disk space. The main weakness in XDoS is that the service provider generally must inspect, parse, and validate the XML messages to determine routing, workflow, security considerations, and so on. It is exactly these inspection, parsing, and validation routines that XDoS targets. There are three primary attack vectors that XDoS can navigate Target CPU through recursion: attacker creates a recursive payload and sends to service provider Target memory through jumbo payloads: service provider uses DOM to parse XML. DOM creates in memory representation of XML document, but when document is very large (for example, north of 1 Gb) service provider host may exhaust memory trying to build memory objects. XML Ping of death: attack service provider with numerous small files that clog the system. All of the above attacks exploit the loosely coupled nature of web services, where the service provider has little to no control over the service requester and any messages the service requester sends.
Nessus
NASL family OracleVM Local Security Checks NASL id ORACLEVM_OVMSA-2017-0165.NASL description The remote OracleVM system is missing necessary patches to address critical security updates : - add disable monitor to default ntp.conf [CVE-2013-5211] - fix buffer overflow in datum refclock driver (CVE-2017-6462) - fix crash with invalid unpeer command (CVE-2017-6463) - fix potential crash with invalid server command (CVE-2017-6464) - don last seen 2020-06-01 modified 2020-06-02 plugin id 104204 published 2017-10-27 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/104204 title OracleVM 3.3 / 3.4 : ntp (OVMSA-2017-0165) code # # (C) Tenable Network Security, Inc. # # The package checks in this plugin were extracted from OracleVM # Security Advisory OVMSA-2017-0165. # include("compat.inc"); if (description) { script_id(104204); script_version("3.4"); script_cvs_date("Date: 2019/09/27 13:00:35"); script_cve_id("CVE-2013-5211", "CVE-2015-7979", "CVE-2016-1547", "CVE-2016-1548", "CVE-2016-1550", "CVE-2016-2518", "CVE-2016-7426", "CVE-2016-7429", "CVE-2016-7433", "CVE-2016-9310", "CVE-2016-9311", "CVE-2017-6462", "CVE-2017-6463", "CVE-2017-6464"); script_bugtraq_id(64692); script_name(english:"OracleVM 3.3 / 3.4 : ntp (OVMSA-2017-0165)"); script_summary(english:"Checks the RPM output for the updated packages."); script_set_attribute( attribute:"synopsis", value:"The remote OracleVM host is missing one or more security updates." ); script_set_attribute( attribute:"description", value: "The remote OracleVM system is missing necessary patches to address critical security updates : - add disable monitor to default ntp.conf [CVE-2013-5211] - fix buffer overflow in datum refclock driver (CVE-2017-6462) - fix crash with invalid unpeer command (CVE-2017-6463) - fix potential crash with invalid server command (CVE-2017-6464) - don't limit rate of packets from sources (CVE-2016-7426) - don't change interface from received packets (CVE-2016-7429) - fix calculation of root distance again (CVE-2016-7433) - require authentication for trap commands (CVE-2016-9310) - fix crash when reporting peer event to trappers (CVE-2016-9311) - don't allow spoofed packets to demobilize associations (CVE-2015-7979, CVE-2016-1547) - don't allow spoofed packet to enable symmetric interleaved mode (CVE-2016-1548) - check mode of new source in config command (CVE-2016-2518) - make MAC check resilient against timing attack (CVE-2016-1550)" ); # https://oss.oracle.com/pipermail/oraclevm-errata/2017-October/000795.html script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?7c1983e3" ); # https://oss.oracle.com/pipermail/oraclevm-errata/2017-October/000796.html script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?9454d3fb" ); script_set_attribute( attribute:"solution", value:"Update the affected ntp / ntpdate packages." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:C"); script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"); script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:vm:ntp"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:vm:ntpdate"); script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:vm_server:3.3"); script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:vm_server:3.4"); script_set_attribute(attribute:"vuln_publication_date", value:"2014/01/02"); script_set_attribute(attribute:"patch_publication_date", value:"2017/10/26"); script_set_attribute(attribute:"plugin_publication_date", value:"2017/10/27"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"OracleVM Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/OracleVM/release", "Host/OracleVM/rpm-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/OracleVM/release"); if (isnull(release) || "OVS" >!< release) audit(AUDIT_OS_NOT, "OracleVM"); if (! preg(pattern:"^OVS" + "(3\.3|3\.4)" + "(\.[0-9]|$)", string:release)) audit(AUDIT_OS_NOT, "OracleVM 3.3 / 3.4", "OracleVM " + release); if (!get_kb_item("Host/OracleVM/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "OracleVM", cpu); if ("x86_64" >!< cpu) audit(AUDIT_ARCH_NOT, "x86_64", cpu); flag = 0; if (rpm_check(release:"OVS3.3", reference:"ntp-4.2.6p5-12.0.1.el6_9.1")) flag++; if (rpm_check(release:"OVS3.3", reference:"ntpdate-4.2.6p5-12.0.1.el6_9.1")) flag++; if (rpm_check(release:"OVS3.4", reference:"ntp-4.2.6p5-12.0.1.el6_9.1")) flag++; if (rpm_check(release:"OVS3.4", reference:"ntpdate-4.2.6p5-12.0.1.el6_9.1")) flag++; if (flag) { if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get()); else security_hole(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ntp / ntpdate"); }
NASL family Slackware Local Security Checks NASL id SLACKWARE_SSA_2016-326-01.NASL description New ntp packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1, 14.2, and -current to fix security issues. last seen 2020-06-01 modified 2020-06-02 plugin id 95028 published 2016-11-22 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/95028 title Slackware 13.0 / 13.1 / 13.37 / 14.0 / 14.1 / 14.2 / current : ntp (SSA:2016-326-01) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Slackware Security Advisory 2016-326-01. The text # itself is copyright (C) Slackware Linux, Inc. # include("compat.inc"); if (description) { script_id(95028); script_version("2.3"); script_cvs_date("Date: 2019/04/11 17:23:07"); script_cve_id("CVE-2016-7426", "CVE-2016-7427", "CVE-2016-7428", "CVE-2016-7429", "CVE-2016-7431", "CVE-2016-7433", "CVE-2016-7434", "CVE-2016-9310", "CVE-2016-9311", "CVE-2016-9312"); script_xref(name:"SSA", value:"2016-326-01"); script_name(english:"Slackware 13.0 / 13.1 / 13.37 / 14.0 / 14.1 / 14.2 / current : ntp (SSA:2016-326-01)"); script_summary(english:"Checks for updated package in /var/log/packages"); script_set_attribute( attribute:"synopsis", value:"The remote Slackware host is missing a security update." ); script_set_attribute( attribute:"description", value: "New ntp packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1, 14.2, and -current to fix security issues." ); # http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.641761 script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?271e3ad7" ); script_set_attribute(attribute:"solution", value:"Update the affected ntp package."); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:C"); script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"); script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:slackware:slackware_linux:ntp"); script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux"); script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:13.0"); script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:13.1"); script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:13.37"); script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:14.0"); script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:14.1"); script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:14.2"); script_set_attribute(attribute:"patch_publication_date", value:"2016/11/21"); script_set_attribute(attribute:"plugin_publication_date", value:"2016/11/22"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Slackware Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/Slackware/release", "Host/Slackware/packages"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("slackware.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/Slackware/release")) audit(AUDIT_OS_NOT, "Slackware"); if (!get_kb_item("Host/Slackware/packages")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Slackware", cpu); flag = 0; if (slackware_check(osver:"13.0", pkgname:"ntp", pkgver:"4.2.8p9", pkgarch:"i486", pkgnum:"1_slack13.0")) flag++; if (slackware_check(osver:"13.0", arch:"x86_64", pkgname:"ntp", pkgver:"4.2.8p9", pkgarch:"x86_64", pkgnum:"1_slack13.0")) flag++; if (slackware_check(osver:"13.1", pkgname:"ntp", pkgver:"4.2.8p9", pkgarch:"i486", pkgnum:"1_slack13.1")) flag++; if (slackware_check(osver:"13.1", arch:"x86_64", pkgname:"ntp", pkgver:"4.2.8p9", pkgarch:"x86_64", pkgnum:"1_slack13.1")) flag++; if (slackware_check(osver:"13.37", pkgname:"ntp", pkgver:"4.2.8p9", pkgarch:"i486", pkgnum:"1_slack13.37")) flag++; if (slackware_check(osver:"13.37", arch:"x86_64", pkgname:"ntp", pkgver:"4.2.8p9", pkgarch:"x86_64", pkgnum:"1_slack13.37")) flag++; if (slackware_check(osver:"14.0", pkgname:"ntp", pkgver:"4.2.8p9", pkgarch:"i486", pkgnum:"1_slack14.0")) flag++; if (slackware_check(osver:"14.0", arch:"x86_64", pkgname:"ntp", pkgver:"4.2.8p9", pkgarch:"x86_64", pkgnum:"1_slack14.0")) flag++; if (slackware_check(osver:"14.1", pkgname:"ntp", pkgver:"4.2.8p9", pkgarch:"i486", pkgnum:"1_slack14.1")) flag++; if (slackware_check(osver:"14.1", arch:"x86_64", pkgname:"ntp", pkgver:"4.2.8p9", pkgarch:"x86_64", pkgnum:"1_slack14.1")) flag++; if (slackware_check(osver:"14.2", pkgname:"ntp", pkgver:"4.2.8p9", pkgarch:"i586", pkgnum:"1_slack14.2")) flag++; if (slackware_check(osver:"14.2", arch:"x86_64", pkgname:"ntp", pkgver:"4.2.8p9", pkgarch:"x86_64", pkgnum:"1_slack14.2")) flag++; if (slackware_check(osver:"current", pkgname:"ntp", pkgver:"4.2.8p9", pkgarch:"i586", pkgnum:"1")) flag++; if (slackware_check(osver:"current", arch:"x86_64", pkgname:"ntp", pkgver:"4.2.8p9", pkgarch:"x86_64", pkgnum:"1")) flag++; if (flag) { if (report_verbosity > 0) security_hole(port:0, extra:slackware_report_get()); else security_hole(0); exit(0); } else audit(AUDIT_HOST_NOT, "affected");
NASL family OracleVM Local Security Checks NASL id ORACLEVM_OVMSA-2017-0038.NASL description The remote OracleVM system is missing necessary patches to address critical security updates : - add disable monitor to default ntp.conf [CVE-2013-5211] - don last seen 2020-06-01 modified 2020-06-02 plugin id 97058 published 2017-02-08 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/97058 title OracleVM 3.3 / 3.4 : ntp (OVMSA-2017-0038) NASL family SuSE Local Security Checks NASL id SUSE_SU-2017-0255-1.NASL description This update for ntp fixes the following issues: ntp was updated to 4.2.8p9. Security issues fixed : - CVE-2016-9311, CVE-2016-9310, bsc#1011377: Mode 6 unauthenticated trap information disclosure and DDoS vector. - CVE-2016-7427, bsc#1011390: Broadcast Mode Replay Prevention DoS. - CVE-2016-7428, bsc#1011417: Broadcast Mode Poll Interval Enforcement DoS. - CVE-2016-7431, bsc#1011395: Regression: 010-origin: Zero Origin Timestamp Bypass. - CVE-2016-7434, bsc#1011398: NULL pointer dereference in _IO_str_init_static_internal(). - CVE-2016-7429, bsc#1011404: Interface selection attack. - CVE-2016-7426, bsc#1011406: Client rate limiting and server responses. - CVE-2016-7433, bsc#1011411: Reboot sync calculation problem. - CVE-2015-8140: ntpq vulnerable to replay attacks. - CVE-2015-8139: Origin Leak: ntpq and ntpdc, disclose origin. - CVE-2015-5219: An endless loop due to incorrect precision to double conversion (bsc#943216). Non-security issues fixed : - Fix a spurious error message. - Other bugfixes, see /usr/share/doc/packages/ntp/ChangeLog. - Fix a regression in last seen 2020-06-01 modified 2020-06-02 plugin id 96715 published 2017-01-24 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/96715 title SUSE SLES11 Security Update : ntp (SUSE-SU-2017:0255-1) NASL family SuSE Local Security Checks NASL id SUSE_SU-2016-3196-1.NASL description This update for ntp fixes the following issues: ntp was updated to 4.2.8p9. Security issues fixed : - CVE-2016-9311, CVE-2016-9310, bsc#1011377: Mode 6 unauthenticated trap information disclosure and DDoS vector. - CVE-2016-7427, bsc#1011390: Broadcast Mode Replay Prevention DoS. - CVE-2016-7428, bsc#1011417: Broadcast Mode Poll Interval Enforcement DoS. - CVE-2016-7431, bsc#1011395: Regression: 010-origin: Zero Origin Timestamp Bypass. - CVE-2016-7434, bsc#1011398: NULL pointer dereference in _IO_str_init_static_internal(). - CVE-2016-7429, bsc#1011404: Interface selection attack. - CVE-2016-7426, bsc#1011406: Client rate limiting and server responses. - CVE-2016-7433, bsc#1011411: Reboot sync calculation problem. - CVE-2015-5219: An endless loop due to incorrect precision to double conversion (bsc#943216). Non-security issues fixed : - Fix a spurious error message. - Other bugfixes, see /usr/share/doc/packages/ntp/ChangeLog. - Fix a regression in last seen 2020-06-01 modified 2020-06-02 plugin id 95988 published 2016-12-21 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/95988 title SUSE SLES12 Security Update : ntp (SUSE-SU-2016:3196-1) NASL family Amazon Linux Local Security Checks NASL id AL2_ALAS-2018-1009.NASL description Ephemeral association time spoofing additional protection ntpd in ntp 4.2.x before 4.2.8p7 and 4.3.x before 4.3.92 allows authenticated users that know the private symmetric key to create arbitrarily-many ephemeral associations in order to win the clock selection of ntpd and modify a victim last seen 2020-06-01 modified 2020-06-02 plugin id 109688 published 2018-05-11 reporter This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/109688 title Amazon Linux 2 : ntp (ALAS-2018-1009) NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2017-0252.NASL description From Red Hat Security Advisory 2017:0252 : An update for ntp is now available for Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The Network Time Protocol (NTP) is used to synchronize a computer last seen 2020-06-01 modified 2020-06-02 plugin id 97036 published 2017-02-07 reporter This script is Copyright (C) 2017 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/97036 title Oracle Linux 6 / 7 : ntp (ELSA-2017-0252) NASL family AIX Local Security Checks NASL id AIX_IV92194.NASL description NTPv3 and NTPv4 are vulnerable to : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7427 NTP is vulnerable to a denial of service, caused by an error in broadcast mode replay prevention functionality. By sending specially crafted NTP packets, a local attacker could exploit this vulnerability to cause a denial of service. NTP is vulnerable to a denial of service, caused by an error in broadcast mode poll interval enforcement functionality. By sending specially crafted NTP packets, a remote attacker from within the local network could exploit this vulnerability to cause a denial of service. NTP is vulnerable to a denial of service, caused by an error in the control mode (mode 6) functionality. By sending specially crafted control mode packets, a remote attacker could exploit this vulnerability to obtain sensitive information and cause the application to crash. NTP is vulnerable to a denial of service, caused by a NULL pointer dereference when trap service has been enabled. By sending specially crafted packets, a remote attacker could exploit this vulnerability to cause the application to crash. This plugin has been deprecated to better accommodate iFix supersedence with replacement plugin aix_ntp_v3_advisory8.nasl (plugin id 102129). last seen 2017-10-29 modified 2017-08-03 plugin id 97230 published 2017-02-21 reporter Tenable source https://www.tenable.com/plugins/index.php?view=single&id=97230 title AIX 5.3 TL 12 : ntp (IV92194) (deprecated) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-3349-1.NASL description Yihan Lian discovered that NTP incorrectly handled certain large request data values. A remote attacker could possibly use this issue to cause NTP to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS. (CVE-2016-2519) Miroslav Lichvar discovered that NTP incorrectly handled certain spoofed addresses when performing rate limiting. A remote attacker could possibly use this issue to perform a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 16.10. (CVE-2016-7426) Matthew Van Gundy discovered that NTP incorrectly handled certain crafted broadcast mode packets. A remote attacker could possibly use this issue to perform a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 16.10. (CVE-2016-7427, CVE-2016-7428) Miroslav Lichvar discovered that NTP incorrectly handled certain responses. A remote attacker could possibly use this issue to perform a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 16.10. (CVE-2016-7429) Sharon Goldberg and Aanchal Malhotra discovered that NTP incorrectly handled origin timestamps of zero. A remote attacker could possibly use this issue to bypass the origin timestamp protection mechanism. This issue only affected Ubuntu 16.10. (CVE-2016-7431) Brian Utterback, Sharon Goldberg and Aanchal Malhotra discovered that NTP incorrectly performed initial sync calculations. This issue only applied to Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-7433) Magnus Stubman discovered that NTP incorrectly handled certain mrulist queries. A remote attacker could possibly use this issue to cause NTP to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-7434) Matthew Van Gund discovered that NTP incorrectly handled origin timestamp checks. A remote attacker could possibly use this issue to perform a denial of service. This issue only affected Ubuntu Ubuntu 16.10, and Ubuntu 17.04. (CVE-2016-9042) Matthew Van Gundy discovered that NTP incorrectly handled certain control mode packets. A remote attacker could use this issue to set or unset traps. This issue only applied to Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-9310) Matthew Van Gundy discovered that NTP incorrectly handled the trap service. A remote attacker could possibly use this issue to cause NTP to crash, resulting in a denial of service. This issue only applied to Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-9311) It was discovered that NTP incorrectly handled memory when processing long variables. A remote authenticated user could possibly use this issue to cause NTP to crash, resulting in a denial of service. (CVE-2017-6458) It was discovered that NTP incorrectly handled memory when processing long variables. A remote authenticated user could possibly use this issue to cause NTP to crash, resulting in a denial of service. This issue only applied to Ubuntu 16.04 LTS, Ubuntu 16.10 and Ubuntu 17.04. (CVE-2017-6460) It was discovered that the NTP legacy DPTS refclock driver incorrectly handled the /dev/datum device. A local attacker could possibly use this issue to cause a denial of service. (CVE-2017-6462) It was discovered that NTP incorrectly handled certain invalid settings in a :config directive. A remote authenticated user could possibly use this issue to cause NTP to crash, resulting in a denial of service. (CVE-2017-6463) It was discovered that NTP incorrectly handled certain invalid mode configuration directives. A remote authenticated user could possibly use this issue to cause NTP to crash, resulting in a denial of service. (CVE-2017-6464). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 101263 published 2017-07-06 reporter Ubuntu Security Notice (C) 2017-2019 Canonical, Inc. / NASL script (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/101263 title Ubuntu 14.04 LTS / 16.04 LTS / 16.10 / 17.04 : ntp vulnerabilities (USN-3349-1) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2017-0252.NASL description An update for ntp is now available for Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The Network Time Protocol (NTP) is used to synchronize a computer last seen 2020-06-01 modified 2020-06-02 plugin id 97011 published 2017-02-06 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/97011 title RHEL 6 / 7 : ntp (RHSA-2017:0252) NASL family CentOS Local Security Checks NASL id CENTOS_RHSA-2017-0252.NASL description An update for ntp is now available for Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The Network Time Protocol (NTP) is used to synchronize a computer last seen 2020-06-01 modified 2020-06-02 plugin id 97026 published 2017-02-07 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/97026 title CentOS 6 / 7 : ntp (CESA-2017:0252) NASL family SuSE Local Security Checks NASL id SUSE_SU-2016-3195-1.NASL description This update for ntp fixes the following issues: ntp was updated to 4.2.8p9. Security issues fixed : - CVE-2016-9311, CVE-2016-9310, bsc#1011377: Mode 6 unauthenticated trap information disclosure and DDoS vector. - CVE-2016-7427, bsc#1011390: Broadcast Mode Replay Prevention DoS. - CVE-2016-7428, bsc#1011417: Broadcast Mode Poll Interval Enforcement DoS. - CVE-2016-7431, bsc#1011395: Regression: 010-origin: Zero Origin Timestamp Bypass. - CVE-2016-7434, bsc#1011398: NULL pointer dereference in _IO_str_init_static_internal(). - CVE-2016-7429, bsc#1011404: Interface selection attack. - CVE-2016-7426, bsc#1011406: Client rate limiting and server responses. - CVE-2016-7433, bsc#1011411: Reboot sync calculation problem. - CVE-2015-5219: An endless loop due to incorrect precision to double conversion (bsc#943216). Non-security issues fixed : - Fix a spurious error message. - Other bugfixes, see /usr/share/doc/packages/ntp/ChangeLog. - Fix a regression in last seen 2020-06-01 modified 2020-06-02 plugin id 95987 published 2016-12-21 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/95987 title SUSE SLED12 / SLES12 Security Update : ntp (SUSE-SU-2016:3195-1) NASL family AIX Local Security Checks NASL id AIX_IV92067.NASL description NTPv3 and NTPv4 are vulnerable to : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7427 NTP is vulnerable to a denial of service, caused by an error in broadcast mode replay prevention functionality. By sending specially crafted NTP packets, a local attacker could exploit this vulnerability to cause a denial of service. NTP is vulnerable to a denial of service, caused by an error in broadcast mode poll interval enforcement functionality. By sending specially crafted NTP packets, a remote attacker from within the local network could exploit this vulnerability to cause a denial of service. NTP is vulnerable to a denial of service, caused by an error in the control mode (mode 6) functionality. By sending specially crafted control mode packets, a remote attacker could exploit this vulnerability to obtain sensitive information and cause the application to crash. NTP is vulnerable to a denial of service, caused by a NULL pointer dereference when trap service has been enabled. By sending specially crafted packets, a remote attacker could exploit this vulnerability to cause the application to crash. This plugin has been deprecated to better accommodate iFix supersedence with replacement plugin aix_ntp_v3_advisory8.nasl (plugin id 102129). last seen 2017-10-29 modified 2017-08-03 plugin id 97228 published 2017-02-21 reporter Tenable source https://www.tenable.com/plugins/index.php?view=single&id=97228 title AIX 7.2 TL 1 : ntp (IV92067) (deprecated) NASL family AIX Local Security Checks NASL id AIX_IV91803.NASL description NTPv3 and NTPv4 are vulnerable to : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7427 NTP is vulnerable to a denial of service, caused by an error in broadcast mode replay prevention functionality. By sending specially crafted NTP packets, a local attacker could exploit this vulnerability to cause a denial of service. NTP is vulnerable to a denial of service, caused by an error in broadcast mode poll interval enforcement functionality. By sending specially crafted NTP packets, a remote attacker from within the local network could exploit this vulnerability to cause a denial of service. NTP is vulnerable to a denial of service, caused by an error in the control mode (mode 6) functionality. By sending specially crafted control mode packets, a remote attacker could exploit this vulnerability to obtain sensitive information and cause the application to crash. NTP is vulnerable to a denial of service, caused by a NULL pointer dereference when trap service has been enabled. By sending specially crafted packets, a remote attacker could exploit this vulnerability to cause the application to crash. This plugin has been deprecated to better accommodate iFix supersedence with replacement plugin aix_ntp_v3_advisory8.nasl (plugin id 102129). last seen 2017-10-29 modified 2017-08-03 plugin id 97131 published 2017-02-14 reporter Tenable source https://www.tenable.com/plugins/index.php?view=single&id=97131 title AIX 6.1 TL 9 : ntp (IV91803) (deprecated) NASL family Fedora Local Security Checks NASL id FEDORA_2016-7209AB4E02.NASL description Security fix for CVE-2016-7433, CVE-2016-7426, CVE-2016-7429, CVE-2016-9310, CVE-2016-9311 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2016-12-08 plugin id 95612 published 2016-12-08 reporter This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/95612 title Fedora 25 : ntp (2016-7209ab4e02) NASL family FreeBSD Local Security Checks NASL id FREEBSD_PKG_FCEDCDBBC86E11E6B1CF14DAE9D210B8.NASL description Multiple vulnerabilities have been discovered in the NTP suite : CVE-2016-9311: Trap crash, Reported by Matthew Van Gundy of Cisco ASIG. CVE-2016-9310: Mode 6 unauthenticated trap information disclosure and DDoS vector. Reported by Matthew Van Gundy of Cisco ASIG. CVE-2016-7427: Broadcast Mode Replay Prevention DoS. Reported by Matthew Van Gundy of Cisco ASIG. CVE-2016-7428: Broadcast Mode Poll Interval Enforcement DoS. Reported by Matthew Van Gundy of Cisco ASIG. CVE-2016-7431: Regression: 010-origin: Zero Origin Timestamp Bypass. Reported by Sharon Goldberg and Aanchal Malhotra of Boston University. CVE-2016-7434: NULL pointer dereference in _IO_str_init_static_internal(). Reported by Magnus Stubman. CVE-2016-7426: Client rate limiting and server responses. Reported by Miroslav Lichvar of Red Hat. CVE-2016-7433: Reboot sync calculation problem. Reported independently by Brian Utterback of Oracle, and by Sharon Goldberg and Aanchal Malhotra of Boston University. Impact : A remote attacker who can send a specially crafted packet to cause a NULL pointer dereference that will crash ntpd, resulting in a Denial of Service. [CVE-2016-9311] An exploitable configuration modification vulnerability exists in the control mode (mode 6) functionality of ntpd. If, against long-standing BCP recommendations, last seen 2020-06-01 modified 2020-06-02 plugin id 96123 published 2016-12-27 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/96123 title FreeBSD : FreeBSD -- Multiple vulnerabilities of ntp (fcedcdbb-c86e-11e6-b1cf-14dae9d210b8) NASL family Virtuozzo Local Security Checks NASL id VIRTUOZZO_VZLSA-2017-0252.NASL description An update for ntp is now available for Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The Network Time Protocol (NTP) is used to synchronize a computer last seen 2020-06-01 modified 2020-06-02 plugin id 101419 published 2017-07-13 reporter This script is Copyright (C) 2017-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/101419 title Virtuozzo 6 : ntp / ntp-doc / ntp-perl / ntpdate (VZLSA-2017-0252) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2017-1024.NASL description According to the versions of the ntp packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - It was found that when ntp is configured with rate limiting for all associations the limits are also applied to responses received from its configured sources. A remote attacker who knows the sources can cause a denial of service by preventing ntpd from accepting valid responses from its sources. (CVE-2016-7426) - A flaw was found in the control mode functionality of ntpd. A remote attacker could send a crafted control mode packet which could lead to information disclosure or result in DDoS amplification attacks. (CVE-2016-9310) - A flaw was found in the way ntpd implemented the trap service. A remote attacker could send a specially crafted packet to cause a null pointer dereference that will crash ntpd, resulting in a denial of service. (CVE-2016-9311) - A flaw was found in the way ntpd running on a host with multiple network interfaces handled certain server responses. A remote attacker could use this flaw which would cause ntpd to not synchronize with the source. (CVE-2016-7429) - A flaw was found in the way ntpd calculated the root delay. A remote attacker could send a specially-crafted spoofed packet to cause denial of service or in some special cases even crash. (CVE-2016-7433) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-05-06 modified 2017-05-01 plugin id 99869 published 2017-05-01 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/99869 title EulerOS 2.0 SP2 : ntp (EulerOS-SA-2017-1024) NASL family AIX Local Security Checks NASL id AIX_IV91951.NASL description NTPv3 and NTPv4 are vulnerable to : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7427 NTP is vulnerable to a denial of service, caused by an error in broadcast mode replay prevention functionality. By sending specially crafted NTP packets, a local attacker could exploit this vulnerability to cause a denial of service. NTP is vulnerable to a denial of service, caused by an error in broadcast mode poll interval enforcement functionality. By sending specially crafted NTP packets, a remote attacker from within the local network could exploit this vulnerability to cause a denial of service. NTP is vulnerable to a denial of service, caused by an error in the control mode (mode 6) functionality. By sending specially crafted control mode packets, a remote attacker could exploit this vulnerability to obtain sensitive information and cause the application to crash. NTP is vulnerable to a denial of service, caused by a NULL pointer dereference when trap service has been enabled. By sending specially crafted packets, a remote attacker could exploit this vulnerability to cause the application to crash. This plugin has been deprecated to better accommodate iFix supersedence with replacement plugin aix_ntp_v3_advisory8.nasl (plugin id 102129). last seen 2017-10-29 modified 2017-08-03 plugin id 97132 published 2017-02-14 reporter Tenable source https://www.tenable.com/plugins/index.php?view=single&id=97132 title AIX 7.1 TL 4 : ntp (IV91951) (deprecated) NASL family Misc. NASL id NTP_4_2_8P9.NASL description The version of the remote NTP server is 4.x prior to 4.2.8p9. It is, therefore, affected by the following vulnerabilities : - A denial of service vulnerability exists when rate limiting is configured for all associations, the limits also being applied to responses received from the configured sources. An unauthenticated, remote attacker can exploit this, by periodically sending spoofed packets, to keep rate limiting active, resulting in valid responses not being accepted by ntpd from its sources. (CVE-2016-7426) - A denial of service vulnerability exists in the broadcast mode replay prevention functionality. An unauthenticated, adjacent attacker can exploit this, via specially crafted broadcast mode NTP packets periodically injected into the broadcast domain, to cause ntpd to reject broadcast mode packets from legitimate NTP broadcast servers. (CVE-2016-7427) - A denial of service vulnerability exists in the broadcast mode poll interval functionality. An unauthenticated, adjacent attacker can exploit this, via specially crafted broadcast mode NTP packets, to cause ntpd to reject packets from a legitimate NTP broadcast server. (CVE-2016-7428) - A denial of service vulnerability exists when receiving server responses on sockets that correspond to different interfaces than what were used in the request. An unauthenticated, remote attacker can exploit this, by sending repeated requests using specially crafted packets with spoofed source addresses, to cause ntpd to select the incorrect interface for the source, which prevents it from sending new requests until the interface list is refreshed. This eventually results in preventing ntpd from synchronizing with the source. (CVE-2016-7429) - A flaw exists that allows packets with an origin timestamp of zero to bypass security checks. An unauthenticated, remote attacker can exploit this to spoof arbitrary content. (CVE-2016-7431) - A flaw exists due to the root delay being included twice, which may result in the jitter value being higher than expected. An unauthenticated, remote attacker can exploit this to cause a denial of service condition. (CVE-2016-7433) - A denial of service vulnerability exists when handling specially crafted mrulist query packets that allows an unauthenticated, remote attacker to crash ntpd. (CVE-2016-7434) - A flaw exists in the control mode (mode 6) functionality when handling specially crafted control mode packets. An unauthenticated, adjacent attacker can exploit this to set or disable ntpd traps, resulting in the disclosure of potentially sensitive information, disabling of legitimate monitoring, or DDoS amplification. (CVE-2016-9310) - A NULL pointer dereference flaw exists in the report_event() function within file ntpd/ntp_control.c when the trap service handles certain peer events. An unauthenticated, remote attacker can exploit this, via a specially crafted packet, to cause a denial of service condition. (CVE-2016-9311) - A denial of service vulnerability exists when handling oversize UDP packets that allows an unauthenticated, remote attacker to crash ntpd. Note that this vulnerability only affects Windows versions. (CVE-2016-9312) last seen 2020-04-30 modified 2016-12-06 plugin id 95575 published 2016-12-06 reporter This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/95575 title Network Time Protocol Daemon (ntpd) 4.x < 4.2.8p9 Multiple Vulnerabilities NASL family PhotonOS Local Security Checks NASL id PHOTONOS_PHSA-2017-0003.NASL description An update of [guile,ntp] packages for PhotonOS has been released. last seen 2019-02-08 modified 2019-02-07 plugin id 111852 published 2018-08-17 reporter Tenable source https://www.tenable.com/plugins/index.php?view=single&id=111852 title Photon OS 1.0: Guile / Ntp / Ntpstat PHSA-2017-0003 (deprecated) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-1555.NASL description According to the versions of the ntp packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - It was found that when ntp is configured with rate limiting for all associations the limits are also applied to responses received from its configured sources. A remote attacker who knows the sources can cause a denial of service by preventing ntpd from accepting valid responses from its sources.(CVE-2016-7426) - ntpq in NTP before 4.2.8p7 allows remote attackers to obtain origin timestamps and then impersonate peers via unspecified vectors.(CVE-2015-8139) - A NULL pointer dereference flaw was found in the way ntpd processed last seen 2020-06-01 modified 2020-06-02 plugin id 125008 published 2019-05-14 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/125008 title EulerOS Virtualization 3.0.1.0 : ntp (EulerOS-SA-2019-1555) NASL family AIX Local Security Checks NASL id AIX_IV92193.NASL description NTPv3 and NTPv4 are vulnerable to : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7427 NTP is vulnerable to a denial of service, caused by an error in broadcast mode replay prevention functionality. By sending specially crafted NTP packets, a local attacker could exploit this vulnerability to cause a denial of service. NTP is vulnerable to a denial of service, caused by an error in broadcast mode poll interval enforcement functionality. By sending specially crafted NTP packets, a remote attacker from within the local network could exploit this vulnerability to cause a denial of service. NTP is vulnerable to a denial of service, caused by an error in the control mode (mode 6) functionality. By sending specially crafted control mode packets, a remote attacker could exploit this vulnerability to obtain sensitive information and cause the application to crash. NTP is vulnerable to a denial of service, caused by a NULL pointer dereference when trap service has been enabled. By sending specially crafted packets, a remote attacker could exploit this vulnerability to cause the application to crash. This plugin has been deprecated to better accommodate iFix supersedence with replacement plugin aix_ntp_v3_advisory8.nasl (plugin id 102129). last seen 2017-10-29 modified 2017-08-03 plugin id 97229 published 2017-02-21 reporter Tenable source https://www.tenable.com/plugins/index.php?view=single&id=97229 title AIX 7.1 TL 3 : ntp (IV92193) (deprecated) NASL family Fedora Local Security Checks NASL id FEDORA_2016-C198D15316.NASL description Security fix for CVE-2016-7433, CVE-2016-7426, CVE-2016-7429, CVE-2016-9310, CVE-2016-9311 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2016-12-08 plugin id 95615 published 2016-12-08 reporter This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/95615 title Fedora 24 : ntp (2016-c198d15316) NASL family AIX Local Security Checks NASL id AIX_NTP_V4_ADVISORY8.NASL description The version of NTP installed on the remote AIX host is affected by the following vulnerabilities : - A denial of service vulnerability exists in the broadcast mode replay prevention functionality. An unauthenticated, adjacent attacker can exploit this, via specially crafted broadcast mode NTP packets periodically injected into the broadcast domain, to cause ntpd to reject broadcast mode packets from legitimate NTP broadcast servers. (CVE-2016-7427) - A denial of service vulnerability exists in the broadcast mode poll interval functionality. An unauthenticated, adjacent attacker can exploit this, via specially crafted broadcast mode NTP packets, to cause ntpd to reject packets from a legitimate NTP broadcast server. (CVE-2016-7428) - A flaw exists in the control mode (mode 6) functionality when handling specially crafted control mode packets. An unauthenticated, adjacent attacker can exploit this to set or disable ntpd traps, resulting in the disclosure of potentially sensitive information, disabling of legitimate monitoring, or DDoS amplification. (CVE-2016-9310) - A NULL pointer dereference flaw exists in the report_event() function within file ntpd/ntp_control.c when the trap service handles certain peer events. An unauthenticated, remote attacker can exploit this, via a specially crafted packet, to cause a denial of service condition. (CVE-2016-9311) last seen 2020-06-01 modified 2020-06-02 plugin id 99184 published 2017-04-04 reporter This script is Copyright (C) 2017-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/99184 title AIX NTP v4 Advisory : ntp_advisory8.asc (IV92126) (IV92287) NASL family Scientific Linux Local Security Checks NASL id SL_20170206_NTP_ON_SL6_X.NASL description Security Fix(es) : - It was found that when ntp is configured with rate limiting for all associations the limits are also applied to responses received from its configured sources. A remote attacker who knows the sources can cause a denial of service by preventing ntpd from accepting valid responses from its sources. (CVE-2016-7426) - A flaw was found in the control mode functionality of ntpd. A remote attacker could send a crafted control mode packet which could lead to information disclosure or result in DDoS amplification attacks. (CVE-2016-9310) - A flaw was found in the way ntpd implemented the trap service. A remote attacker could send a specially crafted packet to cause a NULL pointer dereference that will crash ntpd, resulting in a denial of service. (CVE-2016-9311) - A flaw was found in the way ntpd running on a host with multiple network interfaces handled certain server responses. A remote attacker could use this flaw which would cause ntpd to not synchronize with the source. (CVE-2016-7429) - A flaw was found in the way ntpd calculated the root delay. A remote attacker could send a specially crafted spoofed packet to cause denial of service or in some special cases even crash. (CVE-2016-7433) last seen 2020-03-18 modified 2017-02-07 plugin id 97039 published 2017-02-07 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/97039 title Scientific Linux Security Update : ntp on SL6.x, SL7.x i386/x86_64 (20170206) NASL family Amazon Linux Local Security Checks NASL id ALA_ALAS-2017-781.NASL description The following security-related issues were resolved : CVE-2016-7426 : Client rate limiting and server responses CVE-2016-7429 : Attack on interface selection CVE-2016-7433 : Broken initial sync calculations regression CVE-2016-9310 : Mode 6 unauthenticated trap information disclosure and DDoS vector CVE-2016-9311 : NULL pointer dereference when trap service is enabled last seen 2020-06-01 modified 2020-06-02 plugin id 96283 published 2017-01-05 reporter This script is Copyright (C) 2017-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/96283 title Amazon Linux AMI : ntp (ALAS-2017-781) NASL family SuSE Local Security Checks NASL id SUSE_SU-2016-3193-1.NASL description This update for ntp fixes the following issues : - Simplify ntpd last seen 2020-06-01 modified 2020-06-02 plugin id 95986 published 2016-12-21 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/95986 title SUSE SLES11 Security Update : ntp (SUSE-SU-2016:3193-1) NASL family FreeBSD Local Security Checks NASL id FREEBSD_PKG_8DB8D62AB08B11E68EBAD050996490D0.NASL description Network Time Foundation reports : NTF last seen 2020-06-01 modified 2020-06-02 plugin id 95265 published 2016-11-23 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/95265 title FreeBSD : ntp -- multiple vulnerabilities (8db8d62a-b08b-11e6-8eba-d050996490d0) NASL family NewStart CGSL Local Security Checks NASL id NEWSTART_CGSL_NS-SA-2019-0114_NTP.NASL description The remote NewStart CGSL host, running version MAIN 4.05, has ntp packages installed that are affected by multiple vulnerabilities: - It was found that when ntp is configured with rate limiting for all associations the limits are also applied to responses received from its configured sources. A remote attacker who knows the sources can cause a denial of service by preventing ntpd from accepting valid responses from its sources. (CVE-2016-7426) - A flaw was found in the way ntpd running on a host with multiple network interfaces handled certain server responses. A remote attacker could use this flaw which would cause ntpd to not synchronize with the source. (CVE-2016-7429) - A flaw was found in the way ntpd calculated the root delay. A remote attacker could send a specially-crafted spoofed packet to cause denial of service or in some special cases even crash. (CVE-2016-7433) - A flaw was found in the control mode functionality of ntpd. A remote attacker could send a crafted control mode packet which could lead to information disclosure or result in DDoS amplification attacks. (CVE-2016-9310) - A flaw was found in the way ntpd implemented the trap service. A remote attacker could send a specially crafted packet to cause a null pointer dereference that will crash ntpd, resulting in a denial of service. (CVE-2016-9311) Note that Nessus has not tested for this issue but has instead relied only on the application last seen 2020-06-01 modified 2020-06-02 plugin id 127353 published 2019-08-12 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/127353 title NewStart CGSL MAIN 4.05 : ntp Multiple Vulnerabilities (NS-SA-2019-0114) NASL family AIX Local Security Checks NASL id AIX_NTP_V3_ADVISORY8.NASL description The version of NTP installed on the remote AIX host is affected by the following vulnerabilities : - A denial of service vulnerability exists in the broadcast mode replay prevention functionality. An unauthenticated, adjacent attacker can exploit this, via specially crafted broadcast mode NTP packets periodically injected into the broadcast domain, to cause ntpd to reject broadcast mode packets from legitimate NTP broadcast servers. (CVE-2016-7427) - A denial of service vulnerability exists in the broadcast mode poll interval functionality. An unauthenticated, adjacent attacker can exploit this, via specially crafted broadcast mode NTP packets, to cause ntpd to reject packets from a legitimate NTP broadcast server. (CVE-2016-7428) - A flaw exists in the control mode (mode 6) functionality when handling specially crafted control mode packets. An unauthenticated, adjacent attacker can exploit this to set or disable ntpd traps, resulting in the disclosure of potentially sensitive information, disabling of legitimate monitoring, or DDoS amplification. (CVE-2016-9310) - A NULL pointer dereference flaw exists in the report_event() function within file ntpd/ntp_control.c when the trap service handles certain peer events. An unauthenticated, remote attacker can exploit this, via a specially crafted packet, to cause a denial of service condition. (CVE-2016-9311) last seen 2020-06-01 modified 2020-06-02 plugin id 102129 published 2017-08-03 reporter This script is Copyright (C) 2017-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/102129 title AIX NTP v3 Advisory : ntp_advisory8.asc (IV92194) (IV91803) (IV92193) (IV91951) (IV92192) (IV92067) NASL family PhotonOS Local Security Checks NASL id PHOTONOS_PHSA-2017-0003_NTP.NASL description An update of the ntp package has been released. last seen 2020-06-01 modified 2020-06-02 plugin id 121668 published 2019-02-07 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/121668 title Photon OS 1.0: Ntp PHSA-2017-0003 NASL family SuSE Local Security Checks NASL id OPENSUSE-2016-1525.NASL description This update for ntp fixes the following issues : ntp was updated to 4.2.8p9. Security issues fixed : - CVE-2016-9311, CVE-2016-9310, bsc#1011377: Mode 6 unauthenticated trap information disclosure and DDoS vector. - CVE-2016-7427, bsc#1011390: Broadcast Mode Replay Prevention DoS. - CVE-2016-7428, bsc#1011417: Broadcast Mode Poll Interval Enforcement DoS. - CVE-2016-7431, bsc#1011395: Regression: 010-origin: Zero Origin Timestamp Bypass. - CVE-2016-7434, bsc#1011398: NULL pointer dereference in _IO_str_init_static_internal(). - CVE-2016-7429, bsc#1011404: Interface selection attack. - CVE-2016-7426, bsc#1011406: Client rate limiting and server responses. - CVE-2016-7433, bsc#1011411: Reboot sync calculation problem. - CVE-2015-5219: An endless loop due to incorrect precision to double conversion (bsc#943216). Non-security issues fixed : - Fix a spurious error message. - Other bugfixes, see /usr/share/doc/packages/ntp/ChangeLog. - Fix a regression in last seen 2020-06-05 modified 2016-12-29 plugin id 96173 published 2016-12-29 reporter This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/96173 title openSUSE Security Update : ntp (openSUSE-2016-1525) NASL family Firewalls NASL id PFSENSE_SA-17_03.NASL description According to its self-reported version number, the remote pfSense install is affected by multiple vulnerabilities as stated in the referenced vendor advisories. last seen 2020-06-01 modified 2020-06-02 plugin id 106503 published 2018-01-31 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/106503 title pfSense < 2.3.3 Multiple Vulnerabilities (SA-17_01 - SA-17_03) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2017-1023.NASL description According to the versions of the ntp packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - It was found that when ntp is configured with rate limiting for all associations the limits are also applied to responses received from its configured sources. A remote attacker who knows the sources can cause a denial of service by preventing ntpd from accepting valid responses from its sources. (CVE-2016-7426) - A flaw was found in the control mode functionality of ntpd. A remote attacker could send a crafted control mode packet which could lead to information disclosure or result in DDoS amplification attacks. (CVE-2016-9310) - A flaw was found in the way ntpd implemented the trap service. A remote attacker could send a specially crafted packet to cause a null pointer dereference that will crash ntpd, resulting in a denial of service. (CVE-2016-9311) - A flaw was found in the way ntpd running on a host with multiple network interfaces handled certain server responses. A remote attacker could use this flaw which would cause ntpd to not synchronize with the source. (CVE-2016-7429) - A flaw was found in the way ntpd calculated the root delay. A remote attacker could send a specially-crafted spoofed packet to cause denial of service or in some special cases even crash. (CVE-2016-7433) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-05-06 modified 2017-05-01 plugin id 99868 published 2017-05-01 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/99868 title EulerOS 2.0 SP1 : ntp (EulerOS-SA-2017-1023) NASL family PhotonOS Local Security Checks NASL id PHOTONOS_PHSA-2017-0003_NTPSTAT.NASL description An update of the ntpstat package has been released. last seen 2020-06-01 modified 2020-06-02 plugin id 121669 published 2019-02-07 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/121669 title Photon OS 1.0: Ntpstat PHSA-2017-0003 NASL family Fedora Local Security Checks NASL id FEDORA_2016-E8A8561EE7.NASL description Security fix for CVE-2016-7433, CVE-2016-7426, CVE-2016-7429, CVE-2016-9310, CVE-2016-9311 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2016-12-08 plugin id 95616 published 2016-12-08 reporter This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/95616 title Fedora 23 : ntp (2016-e8a8561ee7) NASL family AIX Local Security Checks NASL id AIX_IV92192.NASL description NTPv3 and NTPv4 are vulnerable to : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7427 NTP is vulnerable to a denial of service, caused by an error in broadcast mode replay prevention functionality. By sending specially crafted NTP packets, a local attacker could exploit this vulnerability to cause a denial of service. NTP is vulnerable to a denial of service, caused by an error in broadcast mode poll interval enforcement functionality. By sending specially crafted NTP packets, a remote attacker from within the local network could exploit this vulnerability to cause a denial of service. NTP is vulnerable to a denial of service, caused by an error in the control mode (mode 6) functionality. By sending specially crafted control mode packets, a remote attacker could exploit this vulnerability to obtain sensitive information and cause the application to crash. NTP is vulnerable to a denial of service, caused by a NULL pointer dereference when trap service has been enabled. By sending specially crafted packets, a remote attacker could exploit this vulnerability to cause the application to crash. This plugin has been deprecated to better accommodate iFix supersedence with replacement plugin aix_ntp_v3_advisory8.nasl (plugin id 102129). last seen 2017-10-29 modified 2017-08-03 plugin id 97133 published 2017-02-14 reporter Tenable source https://www.tenable.com/plugins/index.php?view=single&id=97133 title AIX 7.2 TL 0 : ntp (IV92192) (deprecated)
Redhat
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bulletinFamily | exploit |
description | ### Summary An exploitable configuration modification vulnerability exists in the control mode (mode 6) functionality of ntpd. A specially crafted control mode packet can set ntpd traps, providing information disclosure and DDoS amplification, and unset ntpd traps, preventing legitimate monitoring. A remote, unauthenticated, network attacker can trigger this vulnerability. ### Tested Versions * NTP 4.2.8p3 * NTP 4.2.8p8 * NTPsec 0.9.1 * NTPsec 0.9.3 ### Product URLs * http://www.ntp.org * http://www.ntpsec.org/ ### CVSS Scores * CVSSv2: 6.4 - (AV:N/AC:L/Au:N/C:P/I:P/A:N) * CVSSv3: 6.5 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N ### Details ntpd provides a `trap` functionality that sends asynchronous notifications to a number of `trap receivers` whenever an event of interest occurs. Example events of interest include: association mobilization and demobilization, authentication failures, reachability changes, etc. Since at least ntp-4.0.94 (July 21, 1999), ntpd has allowed traps to be configured via control (mode 6) and private (mode 7) NTP modes. Though private mode requires messages modifying trap settings to be be authenticated, control mode allows unauthenticated packets to modify trap settings using the `SETTRAP` and `UNSETTRAP` control messages. This vulnerability can be used to achieve several goals: * Time Shifting: If an attacker controls a host that is allowed to receive traps (i.e. not restricted by `restrict noquery` or `restrict notrap`), the attacker can instruct a victim ntpd instance to send traps to the attacker's host. Whenever a reportable event occurs for some peer, the victim ntpd will send a trap to the attacker leaking all the peer variables associated with that peer. The information leaked includes the peer's org and rec variables allowing the attacker to bypass TEST2 and impersonate said peer in a manner similar to CVE-2015-8139 and CVE-2016-1548. The attacker can force the victim ntpd to leak the information for any peer at any time by triggering a reportable event for said peer. There are multiple methods to trigger a reportable event for a peer, among them spoofing an invalid crypto-NAK or incorrectly authenticated packet from the peer. NOTE: With ntp-4.2.8p8 and earlier the 0rigin attack (CVE-2015-8138) [1] already allows impersonation of reachable peers. In those ntpd versions, this vulnerability provides another method for impersonating unreachable peers. * DDoS Amplification: An attacker can use an ntpd instance as a DDoS amplifier to DDoS hosts that are allowed to receive traps from the ntpd instance using the following technique. The amplification factor is 12-13x. The attacker forges a `SETTRAP` packet from the `victim` to the `amplifier`, causing the `amplifier` to set a trap for the `victim`. The attacker then repeatedly triggers reportable events causing trap messages to be sent to the victim. E.g. the attacker rapidly forges invalid crypto-NAKs and/or bad_auth packets from the `victim`'s `sys_peer`. ntpd attempts to limit the number of consecutive traps sent for events of a single type. To maximize effect, the attacker can alternate between events of different types. ntpd will periodically time out old traps when a new one is set. Therefore, for a long-term attack, the attacker may need to periodically refresh the trap on the `amplifier`. Evading Monitoring: In an environment where dynamically configured traps are used to modify an ntpd instance, an unauthenticated attacker can remove traps set by legitimate monitoring systems by spoofing the source address of the `trap receiver` in an `UNSETTRAP` message. Authentication should be required in order to modify trap configuration. ### Mitigation Several mitigations can lessen the impact of this vulnerability. 1. Unauthorized hosts can be prevented from receiving traps using the `restrict default notrap` restriction. This setting is the default on many modern Linux systems. This mitigation has no effect on the "Evading Monitoring" impact described above because the alleged sender of the packet is an authorized trap receiver. 2. Block NTP control mode trap configuration commands using a firewall or IPS. It does not appear that support for configuring control mode traps was ever implemented in ntpq, the reference NTP control mode client. As such, on most networks blocking control mode trap configuration commands should have no effect on legitimate traffic. Specifically, firewalls should block packets with the following characteristics: * UDP Destination Port: 123 * NTP Mode: 6 * NTP Control Operation Code: 6 (SETTRAP) or 31 (UNSETTRAP) Traps specified in ntp.conf cannot be modified using this vulnerability. [1] http://www.talosintelligence.com/reports/TALOS-2016-0077/ ### Timeline * 2016-09-20 - Vendor Disclosure * 2016-11-21 - Public Release |
id | SSV:96647 |
last seen | 2017-11-19 |
modified | 2017-10-11 |
published | 2017-10-11 |
reporter | Root |
title | Network Time Protocol Control Mode Unauthenticated Trap Information Disclosure and DDoS Amplification Vulnerability(CVE-2016-9310) |
Talos
id | TALOS-2016-0203 |
last seen | 2019-05-29 |
published | 2016-11-21 |
reporter | Talos Intelligence |
source | http://www.talosintelligence.com/vulnerability_reports/TALOS-2016-0203 |
title | Network Time Protocol Control Mode Unauthenticated Trap Information Disclosure and DDoS Amplification Vulnerability |
References
- https://www.kb.cert.org/vuls/id/633847
- http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities
- http://support.ntp.org/bin/view/Main/NtpBug3118
- http://nwtime.org/ntp428p9_release/
- http://www.securityfocus.com/bid/94452
- https://bto.bluecoat.com/security-advisory/sa139
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_us
- http://www.securitytracker.com/id/1037354
- https://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.asc
- http://rhn.redhat.com/errata/RHSA-2017-0252.html
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03799en_us
- https://usn.ubuntu.com/3707-2/