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nessusThis script is Copyright (C) 2016-2021 and is owned by Tenable, Inc. or an Affiliate thereof.ORACLELINUX_ELSA-2016-3567.NASL
HistoryMay 23, 2016 - 12:00 a.m.

Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2016-3567)

2016-05-2300:00:00
This script is Copyright (C) 2016-2021 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
92

The remote Oracle Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2016-3567 advisory.

  • The Linux kernel before 4.4.1 allows local users to bypass file-descriptor limits and cause a denial of service (memory consumption) by sending each descriptor over a UNIX socket before closing it, related to net/unix/af_unix.c and net/unix/garbage.c. (CVE-2013-4312)

  • net/ipv6/addrconf.c in the IPv6 stack in the Linux kernel before 4.0 does not validate attempted changes to the MTU value, which allows context-dependent attackers to cause a denial of service (packet loss) via a value that is (1) smaller than the minimum compliant value or (2) larger than the MTU of an interface, as demonstrated by a Router Advertisement (RA) message that is not validated by a daemon, a different vulnerability than CVE-2015-0272. NOTE: the scope of CVE-2015-0272 is limited to the NetworkManager product. (CVE-2015-8215)

  • The ext4 implementation in the Linux kernel before 2.6.34 does not properly track the initialization of certain data structures, which allows physically proximate attackers to cause a denial of service (NULL pointer dereference and panic) via a crafted USB device, related to the ext4_fill_super function.
    (CVE-2015-8324)

  • The networking implementation in the Linux kernel through 4.3.3, as used in Android and other products, does not validate protocol identifiers for certain protocol families, which allows local users to cause a denial of service (NULL function pointer dereference and system crash) or possibly gain privileges by leveraging CLONE_NEWUSER support to execute a crafted SOCK_RAW application. (CVE-2015-8543)

  • fs/ext4/namei.c in the Linux kernel before 3.7 allows physically proximate attackers to cause a denial of service (system crash) via a crafted no-journal filesystem, a related issue to CVE-2013-2015.
    (CVE-2015-7509)

Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2016-3567.
##

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

if (description)
{
  script_id(91293);
  script_version("2.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/09/08");

  script_cve_id(
    "CVE-2013-4312",
    "CVE-2015-7509",
    "CVE-2015-8215",
    "CVE-2015-8324",
    "CVE-2015-8543"
  );

  script_name(english:"Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2016-3567)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Oracle Linux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Oracle Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in
the ELSA-2016-3567 advisory.

  - The Linux kernel before 4.4.1 allows local users to bypass file-descriptor limits and cause a denial of
    service (memory consumption) by sending each descriptor over a UNIX socket before closing it, related to
    net/unix/af_unix.c and net/unix/garbage.c. (CVE-2013-4312)

  - net/ipv6/addrconf.c in the IPv6 stack in the Linux kernel before 4.0 does not validate attempted changes
    to the MTU value, which allows context-dependent attackers to cause a denial of service (packet loss) via
    a value that is (1) smaller than the minimum compliant value or (2) larger than the MTU of an interface,
    as demonstrated by a Router Advertisement (RA) message that is not validated by a daemon, a different
    vulnerability than CVE-2015-0272. NOTE: the scope of CVE-2015-0272 is limited to the NetworkManager
    product. (CVE-2015-8215)

  - The ext4 implementation in the Linux kernel before 2.6.34 does not properly track the initialization of
    certain data structures, which allows physically proximate attackers to cause a denial of service (NULL
    pointer dereference and panic) via a crafted USB device, related to the ext4_fill_super function.
    (CVE-2015-8324)

  - The networking implementation in the Linux kernel through 4.3.3, as used in Android and other products,
    does not validate protocol identifiers for certain protocol families, which allows local users to cause a
    denial of service (NULL function pointer dereference and system crash) or possibly gain privileges by
    leveraging CLONE_NEWUSER support to execute a crafted SOCK_RAW application. (CVE-2015-8543)

  - fs/ext4/namei.c in the Linux kernel before 3.7 allows physically proximate attackers to cause a denial of
    service (system crash) via a crafted no-journal filesystem, a related issue to CVE-2013-2015.
    (CVE-2015-7509)

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:"https://linux.oracle.com/errata/ELSA-2016-3567.html");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2015-8543");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2009/09/29");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/05/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/05/23");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:6");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-debug-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-firmware");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:mlnx_en-2.6.32-400.37.17.el5uek");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:mlnx_en-2.6.32-400.37.17.el5uekdebug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:mlnx_en-2.6.32-400.37.17.el6uek");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:mlnx_en-2.6.32-400.37.17.el6uekdebug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ofa-2.6.32-400.37.17.el5uek");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ofa-2.6.32-400.37.17.el5uekdebug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ofa-2.6.32-400.37.17.el6uek");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ofa-2.6.32-400.37.17.el6uekdebug");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2016-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


include('audit.inc');
include('global_settings.inc');
include('ksplice.inc');
include('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item('Host/OracleLinux')) audit(AUDIT_OS_NOT, 'Oracle Linux');
var release = get_kb_item("Host/RedHat/release");
if (isnull(release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Oracle Linux');
var os_ver = os_ver[1];
if (! preg(pattern:"^(5|6)([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Oracle Linux 5 / 6', 'Oracle Linux ' + os_ver);

if (!get_kb_item('Host/RedHat/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

var 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, 'Oracle Linux', cpu);

var machine_uptrack_level = get_one_kb_item('Host/uptrack-uname-r');
if (machine_uptrack_level)
{
  var trimmed_uptrack_level = ereg_replace(string:machine_uptrack_level, pattern:"\.(x86_64|i[3-6]86|aarch64)$", replace:'');
  var fixed_uptrack_levels = ['2.6.32-400.37.17.el5uek', '2.6.32-400.37.17.el6uek'];
  foreach var fixed_uptrack_level ( fixed_uptrack_levels ) {
    if (rpm_spec_vers_cmp(a:trimmed_uptrack_level, b:fixed_uptrack_level) >= 0)
    {
      audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for ELSA-2016-3567');
    }
  }
  __rpm_report = 'Running KSplice level of ' + trimmed_uptrack_level + ' does not meet the minimum fixed level of ' + join(fixed_uptrack_levels, sep:' / ') + ' for this advisory.\n\n';
}

var kernel_major_minor = get_kb_item('Host/uname/major_minor');
if (empty_or_null(kernel_major_minor)) exit(1, 'Unable to determine kernel major-minor level.');
var expected_kernel_major_minor = '2.6';
if (kernel_major_minor != expected_kernel_major_minor)
  audit(AUDIT_OS_NOT, 'running kernel level ' + expected_kernel_major_minor + ', it is running kernel level ' + kernel_major_minor);

var pkgs = [
    {'reference':'kernel-uek-2.6.32-400.37.17.el5uek', 'cpu':'i686', 'release':'5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-2.6.32'},
    {'reference':'kernel-uek-2.6.32-400.37.17.el5uek', 'cpu':'x86_64', 'release':'5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-2.6.32'},
    {'reference':'kernel-uek-debug-2.6.32-400.37.17.el5uek', 'cpu':'i686', 'release':'5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-debug-2.6.32'},
    {'reference':'kernel-uek-debug-2.6.32-400.37.17.el5uek', 'cpu':'x86_64', 'release':'5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-debug-2.6.32'},
    {'reference':'kernel-uek-debug-devel-2.6.32-400.37.17.el5uek', 'cpu':'i686', 'release':'5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-debug-devel-2.6.32'},
    {'reference':'kernel-uek-debug-devel-2.6.32-400.37.17.el5uek', 'cpu':'x86_64', 'release':'5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-debug-devel-2.6.32'},
    {'reference':'kernel-uek-devel-2.6.32-400.37.17.el5uek', 'cpu':'i686', 'release':'5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-devel-2.6.32'},
    {'reference':'kernel-uek-devel-2.6.32-400.37.17.el5uek', 'cpu':'x86_64', 'release':'5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-devel-2.6.32'},
    {'reference':'kernel-uek-doc-2.6.32-400.37.17.el5uek', 'release':'5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-doc-2.6.32'},
    {'reference':'kernel-uek-firmware-2.6.32-400.37.17.el5uek', 'release':'5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-firmware-2.6.32'},
    {'reference':'mlnx_en-2.6.32-400.37.17.el5uek-1.5.7-2', 'cpu':'i686', 'release':'5', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mlnx_en-2.6.32-400.37.17.el5uek-1.5.7-2', 'cpu':'x86_64', 'release':'5', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mlnx_en-2.6.32-400.37.17.el5uekdebug-1.5.7-2', 'cpu':'i686', 'release':'5', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mlnx_en-2.6.32-400.37.17.el5uekdebug-1.5.7-2', 'cpu':'x86_64', 'release':'5', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'ofa-2.6.32-400.37.17.el5uek-1.5.1-4.0.58', 'cpu':'i686', 'release':'5', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'ofa-2.6.32-400.37.17.el5uek-1.5.1-4.0.58', 'cpu':'x86_64', 'release':'5', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'ofa-2.6.32-400.37.17.el5uekdebug-1.5.1-4.0.58', 'cpu':'i686', 'release':'5', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'ofa-2.6.32-400.37.17.el5uekdebug-1.5.1-4.0.58', 'cpu':'x86_64', 'release':'5', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-uek-2.6.32-400.37.17.el6uek', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-2.6.32'},
    {'reference':'kernel-uek-2.6.32-400.37.17.el6uek', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-2.6.32'},
    {'reference':'kernel-uek-debug-2.6.32-400.37.17.el6uek', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-debug-2.6.32'},
    {'reference':'kernel-uek-debug-2.6.32-400.37.17.el6uek', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-debug-2.6.32'},
    {'reference':'kernel-uek-debug-devel-2.6.32-400.37.17.el6uek', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-debug-devel-2.6.32'},
    {'reference':'kernel-uek-debug-devel-2.6.32-400.37.17.el6uek', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-debug-devel-2.6.32'},
    {'reference':'kernel-uek-devel-2.6.32-400.37.17.el6uek', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-devel-2.6.32'},
    {'reference':'kernel-uek-devel-2.6.32-400.37.17.el6uek', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-devel-2.6.32'},
    {'reference':'kernel-uek-doc-2.6.32-400.37.17.el6uek', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-doc-2.6.32'},
    {'reference':'kernel-uek-firmware-2.6.32-400.37.17.el6uek', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-firmware-2.6.32'},
    {'reference':'mlnx_en-2.6.32-400.37.17.el6uek-1.5.7-0.1', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mlnx_en-2.6.32-400.37.17.el6uek-1.5.7-0.1', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mlnx_en-2.6.32-400.37.17.el6uekdebug-1.5.7-0.1', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mlnx_en-2.6.32-400.37.17.el6uekdebug-1.5.7-0.1', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'ofa-2.6.32-400.37.17.el6uek-1.5.1-4.0.58', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'ofa-2.6.32-400.37.17.el6uek-1.5.1-4.0.58', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'ofa-2.6.32-400.37.17.el6uekdebug-1.5.1-4.0.58', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'ofa-2.6.32-400.37.17.el6uekdebug-1.5.1-4.0.58', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE}
];

var flag = 0;
foreach var package_array ( pkgs ) {
  var reference = NULL;
  var release = NULL;
  var sp = NULL;
  var cpu = NULL;
  var el_string = NULL;
  var rpm_spec_vers_cmp = NULL;
  var epoch = NULL;
  var allowmaj = NULL;
  var exists_check = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) release = 'EL' + package_array['release'];
  if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
  if (!empty_or_null(package_array['cpu'])) cpu = package_array['cpu'];
  if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
  if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
  if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
  if (reference && release) {
    if (exists_check) {
        if (rpm_exists(release:release, rpm:exists_check) && rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
    } else {
        if (rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
    }
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'kernel-uek / kernel-uek-debug / kernel-uek-debug-devel / etc');
}
Related for ORACLELINUX_ELSA-2016-3567.NASL