Ubuntu 6.06 LTS / 8.04 LTS / 8.10 / 9.04 : ntp vulnerabilities (USN-777-1)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-777-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(38848);
  script_version("1.13");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/19");

  script_cve_id("CVE-2009-0159", "CVE-2009-1252");
  script_bugtraq_id(35017);
  script_xref(name:"USN", value:"777-1");

  script_name(english:"Ubuntu 6.06 LTS / 8.04 LTS / 8.10 / 9.04 : ntp vulnerabilities (USN-777-1)");
  script_summary(english:"Checks dpkg output for updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Ubuntu host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"A stack-based buffer overflow was discovered in ntpq. If a user were
tricked into connecting to a malicious ntp server, a remote attacker
could cause a denial of service in ntpq, or possibly execute arbitrary
code with the privileges of the user invoking the program.
(CVE-2009-0159)

Chris Ries discovered a stack-based overflow in ntp. If ntp was
configured to use autokey, a remote attacker could send a crafted
packet to cause a denial of service, or possibly execute arbitrary
code. (CVE-2009-1252).

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."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://usn.ubuntu.com/777-1/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(119);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ntp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ntp-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ntp-refclock");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ntp-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ntp-simple");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ntpdate");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:6.06:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:8.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:8.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:9.04");

  script_set_attribute(attribute:"patch_publication_date", value:"2009/05/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/05/20");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2009-2019 Canonical, Inc. / NASL script (C) 2009-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Ubuntu Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("ubuntu.inc");
include("misc_func.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! ereg(pattern:"^(6\.06|8\.04|8\.10|9\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 6.06 / 8.04 / 8.10 / 9.04", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) 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, "Ubuntu", cpu);

flag = 0;

if (ubuntu_check(osver:"6.06", pkgname:"ntp", pkgver:"1:4.2.0a+stable-8.1ubuntu6.2")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"ntp-doc", pkgver:"4.2.0a+stable-8.1ubuntu6.2")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"ntp-refclock", pkgver:"4.2.0a+stable-8.1ubuntu6.2")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"ntp-server", pkgver:"1:4.2.0a+stable-8.1ubuntu6.2")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"ntp-simple", pkgver:"4.2.0a+stable-8.1ubuntu6.2")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"ntpdate", pkgver:"4.2.0a+stable-8.1ubuntu6.2")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"ntp", pkgver:"1:4.2.4p4+dfsg-3ubuntu2.2")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"ntp-doc", pkgver:"4.2.4p4+dfsg-3ubuntu2.2")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"ntpdate", pkgver:"4.2.4p4+dfsg-3ubuntu2.2")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"ntp", pkgver:"1:4.2.4p4+dfsg-6ubuntu2.3")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"ntp-doc", pkgver:"4.2.4p4+dfsg-6ubuntu2.3")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"ntpdate", pkgver:"4.2.4p4+dfsg-6ubuntu2.3")) flag++;
if (ubuntu_check(osver:"9.04", pkgname:"ntp", pkgver:"1:4.2.4p4+dfsg-7ubuntu5.1")) flag++;
if (ubuntu_check(osver:"9.04", pkgname:"ntp-doc", pkgver:"4.2.4p4+dfsg-7ubuntu5.1")) flag++;
if (ubuntu_check(osver:"9.04", pkgname:"ntpdate", pkgver:"4.2.4p4+dfsg-7ubuntu5.1")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ntp / ntp-doc / ntp-refclock / ntp-server / ntp-simple / ntpdate");
}