Ubuntu 6.06 LTS / 7.10 / 8.04 LTS / 8.10 : nfs-utils vulnerability (USN-687-1)

#%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-687-1. 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(36927);
  script_version("1.15");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/19");

  script_cve_id("CVE-2008-4552");
  script_bugtraq_id(31823);
  script_xref(name:"USN", value:"687-1");

  script_name(english:"Ubuntu 6.06 LTS / 7.10 / 8.04 LTS / 8.10 : nfs-utils vulnerability (USN-687-1)");
  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:
"It was discovered that nfs-utils did not properly enforce netgroup
restrictions when using TCP Wrappers. Remote attackers could bypass
the netgroup restrictions enabled by the administrator and possibly
gain access to sensitive information.

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/687-1/"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Update the affected nfs-common, nfs-kernel-server and / or nhfsstone
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: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(264);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nfs-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nfs-kernel-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nhfsstone");
  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:7.10");
  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:"patch_publication_date", value:"2008/12/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/04/23");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2008-2019 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|7\.10|8\.04|8\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 6.06 / 7.10 / 8.04 / 8.10", "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:"nfs-common", pkgver:"1.0.7-3ubuntu2.1")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"nfs-kernel-server", pkgver:"1:1.0.7-3ubuntu2.1")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"nhfsstone", pkgver:"1.0.7-3ubuntu2.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"nfs-common", pkgver:"1.1.1~git-20070709-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"nfs-kernel-server", pkgver:"1:1.1.1~git-20070709-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"nfs-common", pkgver:"1.1.2-2ubuntu2.2")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"nfs-kernel-server", pkgver:"1:1.1.2-2ubuntu2.2")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"nfs-common", pkgver:"1.1.2-4ubuntu1.1")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"nfs-kernel-server", pkgver:"1:1.1.2-4ubuntu1.1")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    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, "nfs-common / nfs-kernel-server / nhfsstone");
}