Vulnerabilities > CVE-2018-12327 - Out-of-bounds Write vulnerability in NTP 4.2.8

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

# The descriptive text and package checks in this plugin were
# extracted from VMware Security Advisory PHSA-2018-1.0-0180. The text
# itself is copyright (C) VMware, Inc.

include("compat.inc");

if (description)
{
  script_id(121884);
  script_version("1.2");
  script_cvs_date("Date: 2019/04/02 21:54:17");

  script_cve_id("CVE-2018-12327");

  script_name(english:"Photon OS 1.0: Ntp PHSA-2018-1.0-0180");
  script_summary(english:"Checks the rpm output for the updated packages.");

  script_set_attribute(attribute:"synopsis", value:
"The remote PhotonOS host is missing multiple security updates.");
  script_set_attribute(attribute:"description", value:
"An update of the ntp package has been released.");
  script_set_attribute(attribute:"see_also", value:"https://github.com/vmware/photon/wiki/Security-Updates-1.0-180.md");
  script_set_attribute(attribute:"solution", value:
"Update the affected Linux packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  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:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-12327");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/08/28");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/08/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/02/07");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:vmware:photonos:ntp");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:photonos:1.0");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/PhotonOS/release", "Host/PhotonOS/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/PhotonOS/release");
if (isnull(release) || release !~ "^VMware Photon") audit(AUDIT_OS_NOT, "PhotonOS");
if (release !~ "^VMware Photon (?:Linux|OS) 1\.0(\D|$)") audit(AUDIT_OS_NOT, "PhotonOS 1.0");

if (!get_kb_item("Host/PhotonOS/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, "PhotonOS", cpu);

flag = 0;

if (rpm_check(release:"PhotonOS-1.0", reference:"ntp-4.2.8p12-1.ph1")) flag++;
if (rpm_check(release:"PhotonOS-1.0", reference:"ntp-debuginfo-4.2.8p12-1.ph1")) 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");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux 2 Security Advisory ALAS-2019-1367.
#

include("compat.inc");

if (description)
{
  script_id(131236);
  script_version("1.2");
  script_cvs_date("Date: 2019/12/09");

  script_cve_id("CVE-2018-12327");
  script_xref(name:"ALAS", value:"2019-1367");

  script_name(english:"Amazon Linux 2 : ntp (ALAS-2019-1367)");
  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:
"The ntpq and ntpdc command-line utilities that are part of ntp package
are vulnerable to stack-based buffer overflow via crafted hostname.
Applications using these vulnerable utilities with an untrusted input
may be potentially exploited, resulting in a crash or arbitrary code
execution under privileges of that application.(CVE-2018-12327)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://alas.aws.amazon.com/AL2/ALAS-2019-1367.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Run 'yum update ntp' to update your system."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  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: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: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:"vuln_publication_date", value:"2018/06/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/11/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/11/25");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019 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", reference:"ntp-4.2.6p5-29.amzn2.0.1")) flag++;
if (rpm_check(release:"AL2", reference:"ntp-debuginfo-4.2.6p5-29.amzn2.0.1")) flag++;
if (rpm_check(release:"AL2", reference:"ntp-doc-4.2.6p5-29.amzn2.0.1")) flag++;
if (rpm_check(release:"AL2", reference:"ntp-perl-4.2.6p5-29.amzn2.0.1")) flag++;
if (rpm_check(release:"AL2", reference:"ntpdate-4.2.6p5-29.amzn2.0.1")) flag++;
if (rpm_check(release:"AL2", reference:"sntp-4.2.6p5-29.amzn2.0.1")) 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-2018:3352-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(118356);
  script_version("1.4");
  script_cvs_date("Date: 2019/09/10 13:51:49");

  script_cve_id("CVE-2018-12327", "CVE-2018-7170");

  script_name(english:"SUSE SLES11 Security Update : ntp (SUSE-SU-2018:3352-1)");
  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:
"NTP was updated to 4.2.8p12 (bsc#1111853) :

CVE-2018-12327: Fixed stack-based buffer overflow in the openhost()
command-line call of NTPQ/NTPDC. (bsc#1098531)

CVE-2018-7170: Add further tweaks to improve the fix for the ephemeral
association time spoofing additional protection (bsc#1083424)

Please also see
https://www.nwtime.org/network-time-foundation-publishes-ntp-4-2-8p12/
for more information.

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=1083424"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1098531"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1111853"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.nwtime.org/network-time-foundation-publishes-ntp-4-2-8p12/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-12327/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-7170/"
  );
  # https://www.suse.com/support/update/announcement/2018/suse-su-20183352-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?b8d42a4b"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"To install this SUSE Security Update use the SUSE recommended
installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Server 11-SP4:zypper in -t patch
slessp4-ntp-13832=1

SUSE Linux Enterprise Debuginfo 11-SP4:zypper in -t patch
dbgsp4-ntp-13832=1"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  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: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: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:"2018/03/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/10/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/10/24");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2019 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-4.2.8p12-64.7.1")) flag++;
if (rpm_check(release:"SLES11", sp:"4", reference:"ntp-doc-4.2.8p12-64.7.1")) 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");
}

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

# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2019-0255. The text
# itself is copyright (C) ZTE, Inc.

include('compat.inc');

if (description)
{
  script_id(132434);
  script_version("1.2");
  script_cvs_date("Date: 2020/01/02");

  script_cve_id("CVE-2018-12327");
  script_bugtraq_id(104517);

  script_name(english:"NewStart CGSL CORE 5.05 / MAIN 5.05 : ntp Vulnerability (NS-SA-2019-0255)");

  script_set_attribute(attribute:"synopsis", value:
"The remote machine is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has ntp packages installed that are affected by a
vulnerability:

  - Stack-based buffer overflow in ntpq and ntpdc of NTP
    version 4.2.8p11 allows an attacker to achieve code
    execution or escalate to higher privileges via a long
    string as the argument for an IPv4 or IPv6 command-line
    parameter. NOTE: It is unclear whether there are any
    common situations in which ntpq or ntpdc is used with a
    command line from an untrusted source. (CVE-2018-12327)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"http://security.gd-linux.com/notice/NS-SA-2019-0255");
  script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL ntp packages. Note that updated packages may not be available yet. Please contact ZTE for
more information.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  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:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-12327");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/06/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/12/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/31");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  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/ZTE-CGSL/release");
if (isnull(release) || release !~ "^CGSL (MAIN|CORE)") audit(AUDIT_OS_NOT, "NewStart Carrier Grade Server Linux");

if (release !~ "CGSL CORE 5.05" &&
    release !~ "CGSL MAIN 5.05")
  audit(AUDIT_OS_NOT, 'NewStart CGSL CORE 5.05 / NewStart CGSL MAIN 5.05');

if (!get_kb_item("Host/ZTE-CGSL/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, "NewStart Carrier Grade Server Linux", cpu);

flag = 0;

pkgs = {
  "CGSL CORE 5.05": [
    "ntp-4.2.6p5-29.el7.centos",
    "ntp-debuginfo-4.2.6p5-29.el7.centos",
    "ntp-doc-4.2.6p5-29.el7.centos",
    "ntp-perl-4.2.6p5-29.el7.centos",
    "ntpdate-4.2.6p5-29.el7.centos",
    "sntp-4.2.6p5-29.el7.centos"
  ],
  "CGSL MAIN 5.05": [
    "ntp-4.2.6p5-29.el7.centos",
    "ntp-debuginfo-4.2.6p5-29.el7.centos",
    "ntp-doc-4.2.6p5-29.el7.centos",
    "ntp-perl-4.2.6p5-29.el7.centos",
    "ntpdate-4.2.6p5-29.el7.centos",
    "sntp-4.2.6p5-29.el7.centos"
  ]
};
pkg_list = pkgs[release];

foreach (pkg in pkg_list)
  if (rpm_check(release:"ZTE " + release, 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");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2018-1083.
#

include("compat.inc");

if (description)
{
  script_id(117607);
  script_version("1.2");
  script_cvs_date("Date: 2019/04/05 23:25:05");

  script_cve_id("CVE-2018-12327", "CVE-2018-7170");
  script_xref(name:"ALAS", value:"2018-1083");

  script_name(english:"Amazon Linux AMI : ntp (ALAS-2018-1083)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Amazon Linux AMI host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"ntpd in ntp 4.2.x before 4.2.8p7 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)

The ntpq and ntpdc command-line utilities that are part of ntp package
are vulnerable to stack-based buffer overflow via crafted hostname.
Applications using these vulnerable utilities with an untrusted input
may be potentially exploited, resulting in a crash or arbitrary code
execution under privileges of that application.(CVE-2018-12327)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://alas.aws.amazon.com/ALAS-2018-1083.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Run 'yum update ntp' to update your system."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  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: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: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:"cpe:/o:amazon:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/09/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/09/20");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2019 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 != "A")
{
  if (os_ver == 'A') os_ver = 'AMI';
  audit(AUDIT_OS_NOT, "Amazon Linux AMI", "Amazon Linux " + os_ver);
}

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


flag = 0;
if (rpm_check(release:"ALA", reference:"ntp-4.2.8p12-1.39.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"ntp-debuginfo-4.2.8p12-1.39.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"ntp-doc-4.2.8p12-1.39.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"ntp-perl-4.2.8p12-1.39.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"ntpdate-4.2.8p12-1.39.amzn1")) 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");
}

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

include("compat.inc");

if (description)
{
  script_id(124901);
  script_version("1.5");
  script_cvs_date("Date: 2019/06/27 13:33:25");

  script_cve_id(
    "CVE-2018-12327"
  );

  script_name(english:"EulerOS Virtualization for ARM 64 3.0.1.0 : ntp (EulerOS-SA-2019-1398)");
  script_summary(english:"Checks the rpm output for the updated package.");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS Virtualization for ARM 64 host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"According to the version of the ntp packages installed, the EulerOS
Virtualization for ARM 64 installation on the remote host is affected
by the following vulnerability :

  - The ntpq and ntpdc command-line utilities that are part
    of ntp package are vulnerable to stack-based buffer
    overflow via crafted hostname. Applications using these
    vulnerable utilities with an untrusted input may be
    potentially exploited, resulting in a crash or
    arbitrary code execution under privileges of that
    application.(CVE-2018-12327)

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-2019-1398
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?785cb41b");
  script_set_attribute(attribute:"solution", value:
"Update the affected ntp package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  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: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:"patch_publication_date", value:"2019/05/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/05/14");

  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:"p-cpe:/a:huawei:euleros:sntp");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:3.0.1.0");
  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) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "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");
uvp = get_kb_item("Host/EulerOS/uvp_version");
if (uvp != "3.0.1.0") audit(AUDIT_OS_NOT, "EulerOS Virtualization 3.0.1.0");
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 ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu);

flag = 0;

pkgs = ["ntp-4.2.6p5-28.h8",
        "ntpdate-4.2.6p5-28.h8",
        "sntp-4.2.6p5-28.h8"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", 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");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2018:3356-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(118357);
  script_version("1.4");
  script_cvs_date("Date: 2019/09/10 13:51:49");

  script_cve_id("CVE-2018-12327", "CVE-2018-7170");

  script_name(english:"SUSE SLES11 Security Update : ntp (SUSE-SU-2018:3356-1)");
  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:
"NTP was updated to 4.2.8p12 (bsc#1111853) :

CVE-2018-12327: Fixed stack-based buffer overflow in the openhost()
command-line call of NTPQ/NTPDC. (bsc#1098531)

CVE-2018-7170: Add further tweaks to improve the fix for the ephemeral
association time spoofing additional protection (bsc#1083424)

Please also see
https://www.nwtime.org/network-time-foundation-publishes-ntp-4-2-8p12/
for more information.

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=1083424"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1098531"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1111853"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.nwtime.org/network-time-foundation-publishes-ntp-4-2-8p12/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-12327/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-7170/"
  );
  # https://www.suse.com/support/update/announcement/2018/suse-su-20183356-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?ddd0ce9d"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"To install this SUSE Security Update use the SUSE recommended
installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Server 11-SP3-LTSS:zypper in -t patch
slessp3-ntp-13833=1

SUSE Linux Enterprise Point of Sale 11-SP3:zypper in -t patch
sleposp3-ntp-13833=1

SUSE Linux Enterprise Debuginfo 11-SP3:zypper in -t patch
dbgsp3-ntp-13833=1"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  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: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: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:"2018/03/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/10/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/10/24");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2019 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:"^(3)$", string:sp))) audit(AUDIT_OS_NOT, "SLES11 SP3", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES11", sp:"3", reference:"ntp-4.2.8p12-48.21.1")) flag++;
if (rpm_check(release:"SLES11", sp:"3", reference:"ntp-doc-4.2.8p12-48.21.1")) 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");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2018:3854 and 
# CentOS Errata and Security Advisory 2018:3854 respectively.
#

include("compat.inc");

if (description)
{
  script_id(119791);
  script_version("1.4");
  script_cvs_date("Date: 2019/12/31");

  script_cve_id("CVE-2018-12327");
  script_xref(name:"RHSA", value:"2018:3854");

  script_name(english:"CentOS 6 : ntp (CESA-2018:3854)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote CentOS 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 Low. 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) :

* ntp: Stack-based buffer overflow in ntpq and ntpdc allows denial of
service or code execution (CVE-2018-12327)

For more details about the security issue(s), including the impact, a
CVSS score, and other related information, refer to the CVE page(s)
listed in the References section."
  );
  # https://lists.centos.org/pipermail/centos-announce/2018-December/023135.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?5bc2b036"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected ntp packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  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:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-12327");
  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:centos:centos:ntp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:ntp-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:ntp-perl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:ntpdate");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:6");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/06/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/12/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/12/20");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"CentOS Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/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/CentOS/release");
if (isnull(release) || "CentOS" >!< release) audit(AUDIT_OS_NOT, "CentOS");
os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "CentOS");
os_ver = os_ver[1];
if (! preg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 6.x", "CentOS " + os_ver);

if (!get_kb_item("Host/CentOS/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, "CentOS", cpu);


flag = 0;
if (rpm_check(release:"CentOS-6", reference:"ntp-4.2.6p5-15.el6.centos")) flag++;
if (rpm_check(release:"CentOS-6", reference:"ntp-doc-4.2.6p5-15.el6.centos")) flag++;
if (rpm_check(release:"CentOS-6", reference:"ntp-perl-4.2.6p5-15.el6.centos")) flag++;
if (rpm_check(release:"CentOS-6", reference:"ntpdate-4.2.6p5-15.el6.centos")) 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 / ntp-doc / ntp-perl / ntpdate");
}