Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-3583-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3583-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include('compat.inc');

if (description)
{
  script_id(107003);
  script_version("3.12");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/09");

  script_cve_id(
    "CVE-2017-0750",
    "CVE-2017-0861",
    "CVE-2017-1000407",
    "CVE-2017-12153",
    "CVE-2017-12190",
    "CVE-2017-12192",
    "CVE-2017-14051",
    "CVE-2017-14140",
    "CVE-2017-14156",
    "CVE-2017-14489",
    "CVE-2017-15102",
    "CVE-2017-15115",
    "CVE-2017-15274",
    "CVE-2017-15868",
    "CVE-2017-16525",
    "CVE-2017-17450",
    "CVE-2017-17806",
    "CVE-2017-18017",
    "CVE-2017-5669",
    "CVE-2017-5754",
    "CVE-2017-7542",
    "CVE-2017-7889",
    "CVE-2017-8824",
    "CVE-2018-5333",
    "CVE-2018-5344"
  );
  script_xref(name:"USN", value:"3583-1");
  script_xref(name:"IAVA", value:"2018-A-0019");

  script_name(english:"Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-3583-1)");

  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-3583-1 advisory.

  - A elevation of privilege vulnerability in the Upstream Linux file system. Product: Android. Versions:
    Android kernel. Android ID: A-36817013. (CVE-2017-0750)

  - Use-after-free vulnerability in the snd_pcm_info function in the ALSA subsystem in the Linux kernel allows
    attackers to gain privileges via unspecified vectors. (CVE-2017-0861)

  - The Linux Kernel 2.6.32 and later are affected by a denial of service, by flooding the diagnostic port
    0x80 an exception can be triggered leading to a kernel panic. (CVE-2017-1000407)

  - A security flaw was discovered in the nl80211_set_rekey_data() function in net/wireless/nl80211.c in the
    Linux kernel through 4.13.3. This function does not check whether the required attributes are present in a
    Netlink request. This request can be issued by a user with the CAP_NET_ADMIN capability and may result in
    a NULL pointer dereference and system crash. (CVE-2017-12153)

  - The bio_map_user_iov and bio_unmap_user functions in block/bio.c in the Linux kernel before 4.13.8 do
    unbalanced refcounting when a SCSI I/O vector has small consecutive buffers belonging to the same page.
    The bio_add_pc_page function merges them into one, but the page reference is never dropped. This causes a
    memory leak and possible system lockup (exploitable against the host OS by a guest OS user, if a SCSI disk
    is passed through to a virtual machine) due to an out-of-memory condition. (CVE-2017-12190)

  - The keyctl_read_key function in security/keys/keyctl.c in the Key Management subcomponent in the Linux
    kernel before 4.13.5 does not properly consider that a key may be possessed but negatively instantiated,
    which allows local users to cause a denial of service (OOPS and system crash) via a crafted KEYCTL_READ
    operation. (CVE-2017-12192)

  - An integer overflow in the qla2x00_sysfs_write_optrom_ctl function in drivers/scsi/qla2xxx/qla_attr.c in
    the Linux kernel through 4.12.10 allows local users to cause a denial of service (memory corruption and
    system crash) by leveraging root access. (CVE-2017-14051)

  - The move_pages system call in mm/migrate.c in the Linux kernel before 4.12.9 doesn't check the effective
    uid of the target process, enabling a local attacker to learn the memory layout of a setuid executable
    despite ASLR. (CVE-2017-14140)

  - The atyfb_ioctl function in drivers/video/fbdev/aty/atyfb_base.c in the Linux kernel through 4.12.10 does
    not initialize a certain data structure, which allows local users to obtain sensitive information from
    kernel stack memory by reading locations associated with padding bytes. (CVE-2017-14156)

  - The iscsi_if_rx function in drivers/scsi/scsi_transport_iscsi.c in the Linux kernel through 4.13.2 allows
    local users to cause a denial of service (panic) by leveraging incorrect length validation.
    (CVE-2017-14489)

  - The tower_probe function in drivers/usb/misc/legousbtower.c in the Linux kernel before 4.8.1 allows local
    users (who are physically proximate for inserting a crafted USB device) to gain privileges by leveraging a
    write-what-where condition that occurs after a race condition and a NULL pointer dereference.
    (CVE-2017-15102)

  - The sctp_do_peeloff function in net/sctp/socket.c in the Linux kernel before 4.14 does not check whether
    the intended netns is used in a peel-off action, which allows local users to cause a denial of service
    (use-after-free and system crash) or possibly have unspecified other impact via crafted system calls.
    (CVE-2017-15115)

  - security/keys/keyctl.c in the Linux kernel before 4.11.5 does not consider the case of a NULL payload in
    conjunction with a nonzero length value, which allows local users to cause a denial of service (NULL
    pointer dereference and OOPS) via a crafted add_key or keyctl system call, a different vulnerability than
    CVE-2017-12192. (CVE-2017-15274)

  - The bnep_add_connection function in net/bluetooth/bnep/core.c in the Linux kernel before 3.19 does not
    ensure that an l2cap socket is available, which allows local users to gain privileges via a crafted
    application. (CVE-2017-15868)

  - The usb_serial_console_disconnect function in drivers/usb/serial/console.c in the Linux kernel before
    4.13.8 allows local users to cause a denial of service (use-after-free and system crash) or possibly have
    unspecified other impact via a crafted USB device, related to disconnection and failed setup.
    (CVE-2017-16525)

  - net/netfilter/xt_osf.c in the Linux kernel through 4.14.4 does not require the CAP_NET_ADMIN capability
    for add_callback and remove_callback operations, which allows local users to bypass intended access
    restrictions because the xt_osf_fingers data structure is shared across all net namespaces.
    (CVE-2017-17450)

  - The HMAC implementation (crypto/hmac.c) in the Linux kernel before 4.14.8 does not validate that the
    underlying cryptographic hash algorithm is unkeyed, allowing a local attacker able to use the AF_ALG-based
    hash interface (CONFIG_CRYPTO_USER_API_HASH) and the SHA-3 hash algorithm (CONFIG_CRYPTO_SHA3) to cause a
    kernel stack buffer overflow by executing a crafted sequence of system calls that encounter a missing
    SHA-3 initialization. (CVE-2017-17806)

  - The tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c in the Linux kernel before 4.11, and 4.9.x
    before 4.9.36, allows remote attackers to cause a denial of service (use-after-free and memory corruption)
    or possibly have unspecified other impact by leveraging the presence of xt_TCPMSS in an iptables action.
    (CVE-2017-18017)

  - The do_shmat function in ipc/shm.c in the Linux kernel through 4.9.12 does not restrict the address
    calculated by a certain rounding operation, which allows local users to map page zero, and consequently
    bypass a protection mechanism that exists for the mmap system call, by making crafted shmget and shmat
    system calls in a privileged context. (CVE-2017-5669)

  - Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow
    unauthorized disclosure of information to an attacker with local user access via a side-channel analysis
    of the data cache. (CVE-2017-5754)

  - The ip6_find_1stfragopt function in net/ipv6/output_core.c in the Linux kernel through 4.12.3 allows local
    users to cause a denial of service (integer overflow and infinite loop) by leveraging the ability to open
    a raw socket. (CVE-2017-7542)

  - The mm subsystem in the Linux kernel through 3.2 does not properly enforce the CONFIG_STRICT_DEVMEM
    protection mechanism, which allows local users to read or write to kernel memory locations in the first
    megabyte (and bypass slab-allocation access restrictions) via an application that opens the /dev/mem file,
    related to arch/x86/mm/init.c and drivers/char/mem.c. (CVE-2017-7889)

  - The dccp_disconnect function in net/dccp/proto.c in the Linux kernel through 4.14.3 allows local users to
    gain privileges or cause a denial of service (use-after-free) via an AF_UNSPEC connect system call during
    the DCCP_LISTEN state. (CVE-2017-8824)

  - In the Linux kernel through 4.14.13, the rds_cmsg_atomic function in net/rds/rdma.c mishandles cases where
    page pinning fails or an invalid address is supplied, leading to an rds_atomic_free_op NULL pointer
    dereference. (CVE-2018-5333)

  - In the Linux kernel through 4.14.13, drivers/block/loop.c mishandles lo_release serialization, which
    allows attackers to cause a denial of service (__lock_acquire use-after-free) or possibly have unspecified
    other impact. (CVE-2018-5344)

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-3583-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected kernel package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/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:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-18017");

  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:"metasploit_name", value:'Reliable Datagram Sockets (RDS) rds_atomic_free_op NULL pointer dereference Privilege Escalation');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
  script_set_attribute(attribute:"in_the_news", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/02/24");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/02/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/02/26");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-142-generic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-142-generic-lpae");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-142-lowlatency");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-142-powerpc-e500");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-142-powerpc-e500mc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-142-powerpc-smp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-142-powerpc64-emb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-142-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_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"Ubuntu Security Notice (C) 2018-2024 Canonical, Inc. / NASL script (C) 2018-2024 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': '3.13.0-142',
      'generic-lpae': '3.13.0-142',
      'lowlatency': '3.13.0-142',
      'powerpc-e500': '3.13.0-142',
      'powerpc-e500mc': '3.13.0-142',
      'powerpc-smp': '3.13.0-142',
      'powerpc64-emb': '3.13.0-142',
      'powerpc64-smp': '3.13.0-142'
    }
  }
};

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 = 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-3583-1');
}

if (get_one_kb_item('Host/ksplice/kernel-cves'))
{
  var cve_list = make_list('CVE-2017-0750', 'CVE-2017-0861', 'CVE-2017-5669', 'CVE-2017-5754', 'CVE-2017-7542', 'CVE-2017-7889', 'CVE-2017-8824', 'CVE-2017-12153', 'CVE-2017-12190', 'CVE-2017-12192', 'CVE-2017-14051', 'CVE-2017-14140', 'CVE-2017-14156', 'CVE-2017-14489', 'CVE-2017-15102', 'CVE-2017-15115', 'CVE-2017-15274', 'CVE-2017-15868', 'CVE-2017-16525', 'CVE-2017-17450', 'CVE-2017-17806', 'CVE-2017-18017', 'CVE-2017-1000407', 'CVE-2018-5333', 'CVE-2018-5344');
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for USN-3583-1');
  }
  else
  {
    extra = extra + ksplice_reporting_text();
  }
}
if (extra) {
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : extra
  );
  exit(0);
}