Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-2290-1)

#%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-2290-1. 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(76569);
  script_version("1.24");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/27");

  script_cve_id(
    "CVE-2014-1739",
    "CVE-2014-3144",
    "CVE-2014-3145",
    "CVE-2014-3940",
    "CVE-2014-4611",
    "CVE-2014-4943",
    "CVE-2014-7284"
  );
  script_bugtraq_id(
    67309,
    67321,
    67786,
    68048,
    68214,
    68218,
    68683
  );
  script_xref(name:"USN", value:"2290-1");

  script_name(english:"Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-2290-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in
the USN-2290-1 advisory.

    Sasha Levin reported a flaw in the Linux kernel's point-to-point protocol (PPP) when used with the Layer
    Two Tunneling Protocol (L2TP). A local user could exploit this flaw to gain administrative privileges.
    (CVE-2014-4943)

    Salva Peir discovered an information leak in the Linux kernel's media- device driver. A local attacker
    could exploit this flaw to obtain sensitive information from kernel memory. (CVE-2014-1739)

    A bounds check error was discovered in the socket filter subsystem of the Linux kernel. A local user could
    exploit this flaw to cause a denial of service (system crash) via crafted BPF instructions.
    (CVE-2014-3144)

    A remainder calculation error was discovered in the socket filter subsystem of the Linux kernel. A local
    user could exploit this flaw to cause a denial of service (system crash) via crafted BPF instructions.
    (CVE-2014-3145)

    A flaw was discovered in the Linux kernel's handling of hugetlb entries. A local user could exploit this
    flaw to cause a denial service (memory corruption or system crash). (CVE-2014-3940)

    Don Bailey and Ludvig Strigeus discovered an integer overflow in the Linux kernel's implementation of the
    LZ4 decompression algorithm, when used by code not complying with API limitations. An attacker could
    exploit this flaw to cause a denial of service (memory corruption) or possibly other unspecified impact.
    (CVE-2014-4611)

    Tuomas Rsnen reported the Linux kernel on certain Intel processors does not properly initialize random
    seeds for network operations, causing TCP sequence numbers, TCP and UDP port numbers and IP ID values to
    be predictable. A remote attacker could exploit this flaw to spoof or disrupt IP communication.
    (CVE-2014-7284)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/notices/USN-2290-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected kernel package.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2014-4943");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2014-3144");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:"CANVAS");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/05/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/07/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/07/17");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-32-generic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-32-generic-lpae");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-32-lowlatency");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-32-powerpc-e500");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-32-powerpc-e500mc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-32-powerpc-smp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-32-powerpc64-emb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-32-powerpc64-smp");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04:-:lts");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"Ubuntu Security Notice (C) 2014-2024 Canonical, Inc. / NASL script (C) 2014-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}

include('debian_package.inc');
include('ksplice.inc');

if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('14.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 14.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) 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$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);

var kernel_mappings = {
  '14.04': {
    '3.13.0': {
      'generic': '3.13.0-32',
      'generic-lpae': '3.13.0-32',
      'lowlatency': '3.13.0-32',
      'powerpc-e500': '3.13.0-32',
      'powerpc-e500mc': '3.13.0-32',
      'powerpc-smp': '3.13.0-32',
      'powerpc64-emb': '3.13.0-32',
      'powerpc64-smp': '3.13.0-32'
    }
  }
};

var host_kernel_release = get_kb_item('Host/uptrack-uname-r');
if (empty_or_null(host_kernel_release)) host_kernel_release = get_kb_item_or_exit('Host/uname-r');
var host_kernel_base_version = get_kb_item_or_exit('Host/Debian/kernel-base-version');
var host_kernel_type = get_kb_item_or_exit('Host/Debian/kernel-type');
if(empty_or_null(kernel_mappings[os_release][host_kernel_base_version][host_kernel_type])) audit(AUDIT_INST_VER_NOT_VULN, 'kernel ' + host_kernel_release);

var extra = '';
var kernel_fixed_version = kernel_mappings[os_release][host_kernel_base_version][host_kernel_type] + "-" + host_kernel_type;
if (deb_ver_cmp(ver1:host_kernel_release, ver2:kernel_fixed_version) < 0)
{
  extra += 'Running Kernel level of ' + host_kernel_release + ' does not meet the minimum fixed level of ' + kernel_fixed_version + ' for this advisory.\n\n';
}
  else
{
  audit(AUDIT_PATCH_INSTALLED, 'Kernel package for USN-2290-1');
}

if (get_one_kb_item('Host/ksplice/kernel-cves'))
{
  var cve_list = make_list('CVE-2014-1739', 'CVE-2014-3144', 'CVE-2014-3145', 'CVE-2014-3940', 'CVE-2014-4611', 'CVE-2014-4943', 'CVE-2014-7284');
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for USN-2290-1');
  }
  else
  {
    extra = extra + ksplice_reporting_text();
  }
}
if (extra) {
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : extra
  );
  exit(0);
}