Vulnerabilities > CVE-2017-6463 - Improper Input Validation vulnerability in NTP

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Slackware Security Advisory 2017-112-02. The text 
# itself is copyright (C) Slackware Linux, Inc.
#

include("compat.inc");

if (description)
{
  script_id(99597);
  script_version("$Revision: 3.4 $");
  script_cvs_date("$Date: 2018/01/26 17:50:31 $");

  script_cve_id("CVE-2016-9042", "CVE-2017-6451", "CVE-2017-6452", "CVE-2017-6455", "CVE-2017-6458", "CVE-2017-6459", "CVE-2017-6460", "CVE-2017-6462", "CVE-2017-6463", "CVE-2017-6464");
  script_xref(name:"SSA", value:"2017-112-02");

  script_name(english:"Slackware 13.0 / 13.1 / 13.37 / 14.0 / 14.1 / 14.2 / current : ntp (SSA:2017-112-02)");
  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=2017&m=slackware-security.648848
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?7a77564e"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected ntp package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");

  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:"2017/04/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/04/24");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2018 Tenable Network Security, Inc.");
  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:"4.2.8p10", pkgarch:"i486", pkgnum:"1_slack13.0")) flag++;
if (slackware_check(osver:"13.0", arch:"x86_64", pkgname:"ntp", pkgver:"4.2.8p10", pkgarch:"x86_64", pkgnum:"1_slack13.0")) flag++;

if (slackware_check(osver:"13.1", pkgname:"ntp", pkgver:"4.2.8p10", pkgarch:"i486", pkgnum:"1_slack13.1")) flag++;
if (slackware_check(osver:"13.1", arch:"x86_64", pkgname:"ntp", pkgver:"4.2.8p10", pkgarch:"x86_64", pkgnum:"1_slack13.1")) flag++;

if (slackware_check(osver:"13.37", pkgname:"ntp", pkgver:"4.2.8p10", pkgarch:"i486", pkgnum:"1_slack13.37")) flag++;
if (slackware_check(osver:"13.37", arch:"x86_64", pkgname:"ntp", pkgver:"4.2.8p10", pkgarch:"x86_64", pkgnum:"1_slack13.37")) flag++;

if (slackware_check(osver:"14.0", pkgname:"ntp", pkgver:"4.2.8p10", pkgarch:"i486", pkgnum:"1_slack14.0")) flag++;
if (slackware_check(osver:"14.0", arch:"x86_64", pkgname:"ntp", pkgver:"4.2.8p10", pkgarch:"x86_64", pkgnum:"1_slack14.0")) flag++;

if (slackware_check(osver:"14.1", pkgname:"ntp", pkgver:"4.2.8p10", pkgarch:"i486", pkgnum:"1_slack14.1")) flag++;
if (slackware_check(osver:"14.1", arch:"x86_64", pkgname:"ntp", pkgver:"4.2.8p10", pkgarch:"x86_64", pkgnum:"1_slack14.1")) flag++;

if (slackware_check(osver:"14.2", pkgname:"ntp", pkgver:"4.2.8p10", pkgarch:"i586", pkgnum:"1_slack14.2")) flag++;
if (slackware_check(osver:"14.2", arch:"x86_64", pkgname:"ntp", pkgver:"4.2.8p10", pkgarch:"x86_64", pkgnum:"1_slack14.2")) flag++;

if (slackware_check(osver:"current", pkgname:"ntp", pkgver:"4.2.8p10", pkgarch:"i586", pkgnum:"1")) flag++;
if (slackware_check(osver:"current", arch:"x86_64", pkgname:"ntp", pkgver:"4.2.8p10", pkgarch:"x86_64", pkgnum:"1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:slackware_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2017:3071. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(104170);
  script_version("3.9");
  script_cvs_date("Date: 2019/10/24 15:35:43");

  script_cve_id("CVE-2017-6462", "CVE-2017-6463", "CVE-2017-6464");
  script_xref(name:"RHSA", value:"2017:3071");

  script_name(english:"RHEL 6 : ntp (RHSA-2017:3071)");
  script_summary(english:"Checks the rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Red Hat host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"An update for ntp is now available for Red Hat Enterprise Linux 6.

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's
time with another referenced time source. These packages include the
ntpd service which continuously adjusts system time and utilities used
to query and configure the ntpd service.

Security Fix(es) :

* Two vulnerabilities were discovered in the NTP server's parsing of
configuration directives. A remote, authenticated attacker could cause
ntpd to crash by sending a crafted message. (CVE-2017-6463,
CVE-2017-6464)

* A vulnerability was found in NTP, in the parsing of packets from the
/dev/ datum device. A malicious device could send crafted messages,
causing ntpd to crash. (CVE-2017-6462)

Red Hat would like to thank the NTP project for reporting these
issues. Upstream acknowledges Cure53 as the original reporter of these
issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2017:3071"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2017-6462"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2017-6463"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2017-6464"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ntp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ntp-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ntp-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ntp-perl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ntpdate");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/03/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/10/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/10/26");
  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:"Red Hat Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat");
os_ver = os_ver[1];
if (! preg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 6.x", "Red Hat " + os_ver);

if (!get_kb_item("Host/RedHat/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$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2017:3071";
  yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
  if (!empty_or_null(yum_report))
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : yum_report 
    );
    exit(0);
  }
  else
  {
    audit_message = "affected by Red Hat security advisory " + rhsa;
    audit(AUDIT_OS_NOT, audit_message);
  }
}
else
{
  flag = 0;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"ntp-4.2.6p5-12.el6_9.1")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"s390x", reference:"ntp-4.2.6p5-12.el6_9.1")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"ntp-4.2.6p5-12.el6_9.1")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"ntp-debuginfo-4.2.6p5-12.el6_9.1")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"s390x", reference:"ntp-debuginfo-4.2.6p5-12.el6_9.1")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"ntp-debuginfo-4.2.6p5-12.el6_9.1")) flag++;
  if (rpm_check(release:"RHEL6", reference:"ntp-doc-4.2.6p5-12.el6_9.1")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"ntp-perl-4.2.6p5-12.el6_9.1")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"s390x", reference:"ntp-perl-4.2.6p5-12.el6_9.1")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"ntp-perl-4.2.6p5-12.el6_9.1")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"ntpdate-4.2.6p5-12.el6_9.1")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"s390x", reference:"ntpdate-4.2.6p5-12.el6_9.1")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"ntpdate-4.2.6p5-12.el6_9.1")) flag++;

  if (flag)
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : rpm_report_get() + redhat_report_package_caveat()
    );
    exit(0);
  }
  else
  {
    tested = pkg_tests_get();
    if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
    else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ntp / ntp-debuginfo / ntp-doc / ntp-perl / ntpdate");
  }
}

#
# (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");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux 2 Security Advisory ALAS-2018-1009.
#

include("compat.inc");

if (description)
{
  script_id(109688);
  script_version("1.1");
  script_cvs_date("Date: 2018/05/11 12:23:24");

  script_cve_id("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_xref(name:"ALAS", value:"2018-1009");

  script_name(english:"Amazon Linux 2 : ntp (ALAS-2018-1009)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Amazon Linux 2 host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"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's clock via a Sybil attack. This
issue exists because of an incomplete fix for CVE-2016-1549
.(CVE-2018-7170)

Interleaved symmetric mode cannot recover from bad state

ntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets before updating
the 'received' timestamp, which allows remote attackers to cause a
denial of service (disruption) by sending a packet with a zero-origin
timestamp causing the association to reset and setting the contents of
the packet as the most recent timestamp. This issue is a result of an
incomplete fix for CVE-2015-7704 .(CVE-2018-7184)

Ephemeral association time spoofing

A malicious authenticated peer can create arbitrarily-many ephemeral
associations in order to win the clock selection algorithm in ntpd in
NTP 4.2.8p4 and earlier and NTPsec
3e160db8dc248a0bcb053b56a80167dc742d2b74 and
a5fb34b9cc89b92a8fef2f459004865c93bb7f92 and modify a victim's
clock.(CVE-2016-1549)

Buffer read overrun leads information leak in ctl_getitem()

The ctl_getitem method in ntpd in ntp-4.2.8p6 before 4.2.8p11 allows
remote attackers to cause a denial of service (out-of-bounds read) via
a crafted mode 6 packet with a ntpd instance from 4.2.8p6 through
4.2.8p10. (CVE-2018-7182)

Unauthenticated packet can reset authenticated interleaved association

The protocol engine in ntp 4.2.6 before 4.2.8p11 allows a remote
attackers to cause a denial of service (disruption) by continually
sending a packet with a zero-origin timestamp and source IP address of
the 'other side' of an interleaved association causing the victim ntpd
to reset its association.(CVE-2018-7185)

decodearr() can write beyond its buffer limit

Buffer overflow in the decodearr function in ntpq in ntp 4.2.8p6
through 4.2.8p10 allows remote attackers to execute arbitrary code by
leveraging an ntpq query and sending a response with a crafted
array.(CVE-2018-7183)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://alas.aws.amazon.com/AL2/ALAS-2018-1009.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Run 'yum update ntp' to update your system."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A: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_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ntp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ntp-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ntp-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ntp-perl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ntpdate");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:sntp");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux:2");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/05/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/05/11");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Amazon Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/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/AmazonLinux/release");
if (isnull(release) || !strlen(release)) audit(AUDIT_OS_NOT, "Amazon Linux");
os_ver = pregmatch(pattern: "^AL(A|\d)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "2")
{
  if (os_ver == 'A') os_ver = 'AMI';
  audit(AUDIT_OS_NOT, "Amazon Linux 2", "Amazon Linux " + os_ver);
}

if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (rpm_check(release:"AL2", cpu:"x86_64", reference:"ntp-4.2.6p5-28.amzn2.2.1")) flag++;
if (rpm_check(release:"AL2", cpu:"x86_64", reference:"ntp-debuginfo-4.2.6p5-28.amzn2.2.1")) flag++;
if (rpm_check(release:"AL2", reference:"ntp-doc-4.2.6p5-28.amzn2.2.1")) flag++;
if (rpm_check(release:"AL2", reference:"ntp-perl-4.2.6p5-28.amzn2.2.1")) flag++;
if (rpm_check(release:"AL2", cpu:"x86_64", reference:"ntpdate-4.2.6p5-28.amzn2.2.1")) flag++;
if (rpm_check(release:"AL2", cpu:"x86_64", reference:"sntp-4.2.6p5-28.amzn2.2.1")) 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 / ntp-debuginfo / ntp-doc / ntp-perl / ntpdate / sntp");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2017:1052-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(99469);
  script_version("3.12");
  script_cvs_date("Date: 2019/09/11 11:22:15");

  script_cve_id("CVE-2016-9042", "CVE-2017-6451", "CVE-2017-6458", "CVE-2017-6460", "CVE-2017-6462", "CVE-2017-6463", "CVE-2017-6464");

  script_name(english:"SUSE SLES11 Security Update : ntp (SUSE-SU-2017:1052-1)");
  script_summary(english:"Checks rpm output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote SUSE host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This ntp update to version 4.2.8p10 fixes the following issues:
Security issues fixed (bsc#1030050) :

  - CVE-2017-6464: Denial of Service via Malformed Config

  - CVE-2017-6462: Buffer Overflow in DPTS Clock

  - CVE-2017-6463: Authenticated DoS via Malicious Config
    Option

  - CVE-2017-6458: Potential Overflows in ctl_put()
    functions

  - CVE-2017-6451: Improper use of snprintf() in
    mx4200_send()

  - CVE-2017-6460: Buffer Overflow in ntpq when fetching
    reslist

  - CVE-2016-9042: 0rigin (zero origin) DoS.

  - ntpq_stripquotes() returns incorrect Value

  - ereallocarray()/eallocarray() underused

  - Copious amounts of Unused Code

  - Off-by-one in Oncore GPS Receiver

  - Makefile does not enforce Security Flags Bugfixes :

  - Remove spurious log messages (bsc#1014172).

  - Fixing ppc and ppc64 linker issue (bsc#1031085).

  - clang scan-build findings

  - Support for openssl-1.1.0 without compatibility modes

  - Bugfix 3072 breaks multicastclient

  - forking async worker: interrupted pipe I/O

  - (...) time_pps_create: Exec format error

  - Incorrect Logic for Peer Event Limiting

  - Change the process name of forked DNS worker

  - Trap Configuration Fail

  - Nothing happens if minsane 

  - allow -4/-6 on restrict line with mask

  - out-of-bound pointers in ctl_putsys and decode_bitflags

  - Move ntp-kod to /var/lib/ntp, because /var/db is not a
    standard directory and causes problems for transactional
    updates.

Note that Tenable Network Security has extracted the preceding
description block directly from the SUSE security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1014172"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1030050"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1031085"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2016-9042/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-6451/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-6458/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-6460/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-6462/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-6463/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-6464/"
  );
  # https://www.suse.com/support/update/announcement/2017/suse-su-20171052-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?1dfa73fc"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Server 11-SP4:zypper in -t patch
slessp4-ntp-13066=1

SUSE Linux Enterprise Debuginfo 11-SP4:zypper in -t patch
dbgsp4-ntp-13066=1

To bring your system up-to-date, use 'zypper patch'."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:ntp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:ntp-doc");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:11");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/03/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/04/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/04/19");
  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:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/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/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
os_ver = os_ver[1];
if (! preg(pattern:"^(SLES11)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLES11", "SUSE " + os_ver);

if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);

sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES11" && (! preg(pattern:"^(4)$", string:sp))) audit(AUDIT_OS_NOT, "SLES11 SP4", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES11", sp:"4", reference:"ntp-4.2.8p10-63.1")) flag++;
if (rpm_check(release:"SLES11", sp:"4", reference:"ntp-doc-4.2.8p10-63.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ntp");
}

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(101311);
  script_version("3.14");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/04");

  script_cve_id(
    "CVE-2015-8139",
    "CVE-2016-2516",
    "CVE-2016-4954",
    "CVE-2016-4955",
    "CVE-2016-4956",
    "CVE-2017-6462",
    "CVE-2017-6463",
    "CVE-2017-6464"
  );

  script_name(english:"EulerOS 2.0 SP2 : ntp (EulerOS-SA-2017-1125)");
  script_summary(english:"Checks the rpm output for the updated packages.");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing multiple security updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the ntp packages installed, the EulerOS
installation on the remote host is affected by the following
vulnerabilities :

  - ntpq in NTP before 4.2.8p7 allows remote attackers to
    obtain origin timestamps and then impersonate peers via
    unspecified vectors.(CVE-2015-8139)

  - NTP before 4.2.8p7 and 4.3.x before 4.3.92, when mode7
    is enabled, allows remote attackers to cause a denial
    of service (ntpd abort) by using the same IP address
    multiple times in an unconfig directive.(CVE-2016-2516)

  - The process_packet function in ntp_proto.c in ntpd in
    NTP 4.x before 4.2.8p8 allows remote attackers to cause
    a denial of service (peer-variable modification) by
    sending spoofed packets from many source IP addresses
    in a certain scenario, as demonstrated by triggering an
    incorrect leap indication.(CVE-2016-4954)

  - ntpd in NTP 4.x before 4.2.8p8, when autokey is
    enabled, allows remote attackers to cause a denial of
    service (peer-variable clearing and association outage)
    by sending (1) a spoofed crypto-NAK packet or (2) a
    packet with an incorrect MAC value at a certain
    time.(CVE-2016-4955)

  - ntpd in NTP 4.x before 4.2.8p8 allows remote attackers
    to cause a denial of service (interleaved-mode
    transition and time change) via a spoofed broadcast
    packet. NOTE: this vulnerability exists because of an
    incomplete fix for CVE-2016-1548.(CVE-2016-4956)

  - Buffer overflow in the legacy Datum Programmable Time
    Server (DPTS) refclock driver in NTP before 4.2.8p10
    and 4.3.x before 4.3.94 allows local users to have
    unspecified impact via a crafted /dev/datum
    device.(CVE-2017-6462)

  - NTP before 4.2.8p10 and 4.3.x before 4.3.94 allows
    remote authenticated users to cause a denial of service
    (daemon crash) via an invalid setting in a :config
    directive, related to the unpeer option.(CVE-2017-6463)

  - NTP before 4.2.8p10 and 4.3.x before 4.3.94 allows
    remote attackers to cause a denial of service (ntpd
    crash) via a malformed mode configuration
    directive.(CVE-2017-6464)

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.");
  # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2017-1125
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?319f2a38");
  script_set_attribute(attribute:"solution", value:
"Update the affected ntp 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:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");

  script_set_attribute(attribute:"patch_publication_date", value:"2017/06/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/07/10");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:ntp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:ntpdate");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Huawei Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp");
  script_exclude_keys("Host/EulerOS/uvp_version");

  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/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
if (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0");

sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(2)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP2");

uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP2", "EulerOS UVP " + uvp);

if (!get_kb_item("Host/EulerOS/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$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);

flag = 0;

pkgs = ["ntp-4.2.6p5-25.0.1.h6",
        "ntpdate-4.2.6p5-25.0.1.h6"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"2", reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ntp");
}