Oracle Linux 6 : kernel (ELSA-2014-1997)

#%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-2014-1997.
##

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

if (description)
{
  script_id(80070);
  script_version("1.20");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/09/08");

  script_cve_id(
    "CVE-2012-6657",
    "CVE-2014-3673",
    "CVE-2014-3687",
    "CVE-2014-3688",
    "CVE-2014-5471",
    "CVE-2014-5472",
    "CVE-2014-6410",
    "CVE-2014-9322"
  );
  script_bugtraq_id(
    69396,
    69428,
    69799,
    69803,
    70743,
    70745,
    70746,
    70766,
    70768,
    70883,
    71685
  );
  script_xref(name:"RHSA", value:"2014:1997");

  script_name(english:"Oracle Linux 6 : kernel (ELSA-2014-1997)");

  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 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the
ELSA-2014-1997 advisory.

  - The sctp_assoc_lookup_asconf_ack function in net/sctp/associola.c in the SCTP implementation in the Linux
    kernel through 3.17.2 allows remote attackers to cause a denial of service (panic) via duplicate ASCONF
    chunks that trigger an incorrect uncork within the side-effect interpreter. (CVE-2014-3687)

  - The SCTP implementation in the Linux kernel through 3.17.2 allows remote attackers to cause a denial of
    service (system crash) via a malformed ASCONF chunk, related to net/sctp/sm_make_chunk.c and
    net/sctp/sm_statefuns.c. (CVE-2014-3673)

  - The SCTP implementation in the Linux kernel before 3.17.4 allows remote attackers to cause a denial of
    service (memory consumption) by triggering a large number of chunks in an association's output queue, as
    demonstrated by ASCONF probes, related to net/sctp/inqueue.c and net/sctp/sm_statefuns.c. (CVE-2014-3688)

  - The __udf_read_inode function in fs/udf/inode.c in the Linux kernel through 3.16.3 does not restrict the
    amount of ICB indirection, which allows physically proximate attackers to cause a denial of service
    (infinite loop or stack consumption) via a UDF filesystem with a crafted inode. (CVE-2014-6410)

  - The sock_setsockopt function in net/core/sock.c in the Linux kernel before 3.5.7 does not ensure that a
    keepalive action is associated with a stream socket, which allows local users to cause a denial of service
    (system crash) by leveraging the ability to create a raw socket. (CVE-2012-6657)

  - Stack consumption vulnerability in the parse_rock_ridge_inode_internal function in fs/isofs/rock.c in the
    Linux kernel through 3.16.1 allows local users to cause a denial of service (uncontrolled recursion, and
    system crash or reboot) via a crafted iso9660 image with a CL entry referring to a directory entry that
    has a CL entry. (CVE-2014-5471)

  - The parse_rock_ridge_inode_internal function in fs/isofs/rock.c in the Linux kernel through 3.16.1 allows
    local users to cause a denial of service (unkillable mount process) via a crafted iso9660 image with a
    self-referential CL entry. (CVE-2014-5472)

  - arch/x86/kernel/entry_64.S in the Linux kernel before 3.17.5 does not properly handle faults associated
    with the Stack Segment (SS) segment register, which allows local users to gain privileges by triggering an
    IRET instruction that leads to access to a GS Base address from the wrong space. (CVE-2014-9322)

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-2014-1997.html");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/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:"cvss_score_source", value:"CVE-2014-9322");

  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:"2014/08/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/12/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/12/17");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:6");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-abi-whitelists");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-debug-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-firmware");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:perf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:python-perf");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2014-2021 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:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Oracle Linux 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 = ['2.6.32-504.3.3.el6'];
  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-2014-1997');
    }
  }
  __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-2.6.32-504.3.3.el6', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-2.6.32'},
    {'reference':'kernel-2.6.32-504.3.3.el6', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-2.6.32'},
    {'reference':'kernel-abi-whitelists-2.6.32-504.3.3.el6', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-abi-whitelists-2.6.32'},
    {'reference':'kernel-debug-2.6.32-504.3.3.el6', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-2.6.32'},
    {'reference':'kernel-debug-2.6.32-504.3.3.el6', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-2.6.32'},
    {'reference':'kernel-debug-devel-2.6.32-504.3.3.el6', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-devel-2.6.32'},
    {'reference':'kernel-debug-devel-2.6.32-504.3.3.el6', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-debug-devel-2.6.32'},
    {'reference':'kernel-devel-2.6.32-504.3.3.el6', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-devel-2.6.32'},
    {'reference':'kernel-devel-2.6.32-504.3.3.el6', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-devel-2.6.32'},
    {'reference':'kernel-firmware-2.6.32-504.3.3.el6', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-firmware-2.6.32'},
    {'reference':'kernel-headers-2.6.32-504.3.3.el6', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-headers-2.6.32'},
    {'reference':'kernel-headers-2.6.32-504.3.3.el6', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-headers-2.6.32'},
    {'reference':'perf-2.6.32-504.3.3.el6', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'perf-2.6.32-504.3.3.el6', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python-perf-2.6.32-504.3.3.el6', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python-perf-2.6.32-504.3.3.el6', '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_HOLE,
      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 / kernel-abi-whitelists / kernel-debug / etc');
}