Vulnerabilities > CVE-2016-8632 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Linux Kernel

#
# (C) Tenable Network Security, Inc.
#
# The package checks in this plugin were extracted from OracleVM
# Security Advisory OVMSA-2017-0056.
#

include("compat.inc");

if (description)
{
  script_id(99162);
  script_version("3.4");
  script_cvs_date("Date: 2019/09/27 13:00:35");

  script_cve_id("CVE-2015-8952", "CVE-2016-10088", "CVE-2016-10147", "CVE-2016-3140", "CVE-2016-3672", "CVE-2016-3951", "CVE-2016-7097", "CVE-2016-7425", "CVE-2016-8399", "CVE-2016-8632", "CVE-2016-8633", "CVE-2016-8645", "CVE-2016-9178", "CVE-2016-9588", "CVE-2016-9644", "CVE-2016-9756", "CVE-2017-2596", "CVE-2017-2636", "CVE-2017-5897", "CVE-2017-5970", "CVE-2017-6001", "CVE-2017-6345", "CVE-2017-7187");

  script_name(english:"OracleVM 3.4 : Unbreakable / etc (OVMSA-2017-0056)");
  script_summary(english:"Checks the RPM output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote OracleVM host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote OracleVM system is missing necessary patches to address
critical security updates :

  - Revert 'x86/mm: Expand the exception table logic to
    allow new handling options' (Brian Maly) [Orabug:
    25790387] (CVE-2016-9644)

  - Revert 'fix minor infoleak in get_user_ex' (Brian Maly)
    [Orabug: 25790387] (CVE-2016-9644)

  - x86/mm: Expand the exception table logic to allow new
    handling options (Tony Luck) [Orabug: 25790387]
    (CVE-2016-9644)

  - rebuild bumping release

  - net: ping: check minimum size on ICMP header length
    (Kees Cook) [Orabug: 25766898] (CVE-2016-8399)
    (CVE-2016-8399)

  - sg_write/bsg_write is not fit to be called under
    KERNEL_DS (Al Viro) [Orabug: 25765436] (CVE-2016-10088)

  - scsi: sg: check length passed to SG_NEXT_CMD_LEN (peter
    chang) [Orabug: 25751984] (CVE-2017-7187)

  - tty: n_hdlc: get rid of racy n_hdlc.tbuf (Alexander
    Popov) [Orabug: 25696677] (CVE-2017-2636)

  - TTY: n_hdlc, fix lockdep false positive (Jiri Slaby)
    [Orabug: 25696677] (CVE-2017-2636)

  - If Slot Status indicates changes in both Data Link Layer
    Status and Presence Detect, prioritize the Link status
    change. (Jack Vogel) 

  - PCI: pciehp: Leave power indicator on when enabling
    already-enabled slot (Ashok Raj) [Orabug: 25353783]

  - firewire: net: guard against rx buffer overflows (Stefan
    Richter) [Orabug: 25451520] (CVE-2016-8633)

  - usbnet: cleanup after bind in probe (Oliver Neukum)
    [Orabug: 25463898] (CVE-2016-3951)

  - cdc_ncm: do not call usbnet_link_change from
    cdc_ncm_bind (Bj&oslash rn Mork) [Orabug: 25463898]
    (CVE-2016-3951)

  - cdc_ncm: Add support for moving NDP to end of NCM frame
    (Enrico Mioso) [Orabug: 25463898] (CVE-2016-3951)

  - x86/mm/32: Enable full randomization on i386 and X86_32
    (Hector Marco-Gisbert) [Orabug: 25463918]
    (CVE-2016-3672)

  - kvm: fix page struct leak in handle_vmon (Paolo Bonzini)
    [Orabug: 25507133] (CVE-2017-2596)

  - crypto: mcryptd - Check mcryptd algorithm compatibility
    (tim) [Orabug: 25507153] (CVE-2016-10147)

  - kvm: nVMX: Allow L1 to intercept software exceptions
    (#BP and #OF) (Jim Mattson) [Orabug: 25507188]
    (CVE-2016-9588)

  - KVM: x86: drop error recovery in em_jmp_far and
    em_ret_far (Radim Kr&#x10D m&aacute &#x159 ) [Orabug:
    25507213] (CVE-2016-9756)

  - tcp: take care of truncations done by sk_filter (Eric
    Dumazet) [Orabug: 25507226] (CVE-2016-8645)

  - rose: limit sk_filter trim to payload (Willem de Bruijn)
    [Orabug: 25507226] (CVE-2016-8645)

  - tipc: check minimum bearer MTU (Michal Kube&#x10D ek)
    [Orabug: 25507239] (CVE-2016-8632) (CVE-2016-8632)

  - fix minor infoleak in get_user_ex (Al Viro) [Orabug:
    25507269] (CVE-2016-9178)

  - scsi: arcmsr: Simplify user_len checking (Borislav
    Petkov) [Orabug: 25507319] (CVE-2016-7425)

  - scsi: arcmsr: Buffer overflow in arcmsr_iop_message_xfer
    (Dan Carpenter) [Orabug: 25507319] (CVE-2016-7425)

  - tmpfs: clear S_ISGID when setting posix ACLs (Gu Zheng)
    [Orabug: 25507341] (CVE-2016-7097) (CVE-2016-7097)

  - posix_acl: Clear SGID bit when setting file permissions
    (Jan Kara) [Orabug: 25507341] (CVE-2016-7097)
    (CVE-2016-7097)

  - ext2: convert to mbcache2 (Jan Kara) [Orabug: 25512366]
    (CVE-2015-8952)

  - ext4: convert to mbcache2 (Jan Kara) [Orabug: 25512366]
    (CVE-2015-8952)

  - mbcache2: reimplement mbcache (Jan Kara) [Orabug:
    25512366] (CVE-2015-8952)

  - USB: digi_acceleport: do sanity checking for the number
    of ports (Oliver Neukum) [Orabug: 25512466]
    (CVE-2016-3140)

  - net/llc: avoid BUG_ON in skb_orphan (Eric Dumazet)
    [Orabug: 25682419] (CVE-2017-6345)

  - net/mlx4_core: Disallow creation of RAW QPs on a VF (Eli
    Cohen) 

  - ipv4: keep skb->dst around in presence of IP options
    (Eric Dumazet) [Orabug: 25698300] (CVE-2017-5970)

  - perf/core: Fix concurrent sys_perf_event_open vs.
    'move_group' race (Peter Zijlstra) [Orabug: 25698751]
    (CVE-2017-6001)

  - ip6_gre: fix ip6gre_err invalid reads (Eric Dumazet)
    [Orabug: 25699015] (CVE-2017-5897)

  - mpt3sas: Don't spam logs if logging level is 0 (Johannes
    Thumshirn) 

  - xen-netfront: cast grant table reference first to type
    int (Dongli Zhang)

  - xen-netfront: do not cast grant table reference to
    signed short (Dongli Zhang)"
  );
  # https://oss.oracle.com/pipermail/oraclevm-errata/2017-April/000674.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?32b057e2"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected kernel-uek / kernel-uek-firmware packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:vm:kernel-uek");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:vm:kernel-uek-firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:vm_server:3.4");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/04/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/04/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/04/03");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"OracleVM Local Security Checks");

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

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/OracleVM/release");
if (isnull(release) || "OVS" >!< release) audit(AUDIT_OS_NOT, "OracleVM");
if (! preg(pattern:"^OVS" + "3\.4" + "(\.[0-9]|$)", string:release)) audit(AUDIT_OS_NOT, "OracleVM 3.4", "OracleVM " + release);
if (!get_kb_item("Host/OracleVM/rpm-list")) 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, "OracleVM", cpu);
if ("x86_64" >!< cpu) audit(AUDIT_ARCH_NOT, "x86_64", cpu);

flag = 0;
if (rpm_check(release:"OVS3.4", reference:"kernel-uek-4.1.12-61.1.33.el6uek")) flag++;
if (rpm_check(release:"OVS3.4", reference:"kernel-uek-firmware-4.1.12-61.1.33.el6uek")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "kernel-uek / kernel-uek-firmware");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3312-1. 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(100664);
  script_version("3.10");
  script_cvs_date("Date: 2019/09/18 12:31:47");

  script_cve_id("CVE-2016-7913", "CVE-2016-7917", "CVE-2016-8632", "CVE-2016-9083", "CVE-2016-9084", "CVE-2016-9604", "CVE-2017-2596", "CVE-2017-2671", "CVE-2017-6001", "CVE-2017-7472", "CVE-2017-7618", "CVE-2017-7645", "CVE-2017-7889", "CVE-2017-7895");
  script_xref(name:"USN", value:"3312-1");

  script_name(english:"Ubuntu 16.04 LTS : linux, linux-aws, linux-gke, linux-raspi2, linux-snapdragon vulnerabilities (USN-3312-1)");
  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 the netfilter netlink implementation in the
Linux kernel did not properly validate batch messages. A local
attacker with the CAP_NET_ADMIN capability could use this to expose
sensitive information or cause a denial of service. (CVE-2016-7917)

Qian Zhang discovered a heap-based buffer overflow in the
tipc_msg_build() function in the Linux kernel. A local attacker could
use to cause a denial of service (system crash) or possibly execute
arbitrary code with administrative privileges. (CVE-2016-8632)

It was discovered that the keyring implementation in the Linux kernel
in some situations did not prevent special internal keyrings from
being joined by userspace keyrings. A privileged local attacker could
use this to bypass module verification. (CVE-2016-9604)

Dmitry Vyukov discovered that KVM implementation in the Linux kernel
improperly emulated the VMXON instruction. A local attacker in a guest
OS could use this to cause a denial of service (memory consumption) in
the host OS. (CVE-2017-2596)

Daniel Jiang discovered that a race condition existed in the ipv4 ping
socket implementation in the Linux kernel. A local privileged attacker
could use this to cause a denial of service (system crash).
(CVE-2017-2671)

Di Shen discovered that a race condition existed in the perf subsystem
of the Linux kernel. A local attacker could use this to cause a denial
of service or possibly gain administrative privileges. (CVE-2017-6001)

Eric Biggers discovered a memory leak in the keyring implementation in
the Linux kernel. A local attacker could use this to cause a denial of
service (memory consumption). (CVE-2017-7472)

Sabrina Dubroca discovered that the asynchronous cryptographic hash
(ahash) implementation in the Linux kernel did not properly handle a
full request queue. A local attacker could use this to cause a denial
of service (infinite recursion). (CVE-2017-7618)

Tuomas Haanpaa and Ari Kauppi discovered that the NFSv2 and NFSv3
server implementations in the Linux kernel did not properly handle
certain long RPC replies. A remote attacker could use this to cause a
denial of service (system crash). (CVE-2017-7645)

Tommi Rantala and Brad Spengler discovered that the memory manager in
the Linux kernel did not properly enforce the CONFIG_STRICT_DEVMEM
protection mechanism. A local attacker with access to /dev/mem could
use this to expose sensitive information or possibly execute arbitrary
code. (CVE-2017-7889)

Tuomas Haanpaa and Ari Kauppi discovered that the NFSv2 and NFSv3
server implementations in the Linux kernel did not properly check for
the end of buffer. A remote attacker could use this to craft requests
that cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2017-7895)

It was discovered that a use-after-free vulnerability existed in the
device driver for XCeive xc2028/xc3028 tuners in the Linux kernel. A
local attacker could use this to cause a denial of service (system
crash) or possibly execute arbitrary code. (CVE-2016-7913)

Vlad Tsyrklevich discovered an integer overflow vulnerability in the
VFIO PCI driver for the Linux kernel. A local attacker with access to
a vfio PCI device file could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2016-9083,
CVE-2016-9084).

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/3312-1/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  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:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4-aws");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4-generic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4-generic-lpae");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4-gke");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4-lowlatency");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4-raspi2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4-snapdragon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-aws");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-generic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-gke");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-snapdragon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/11/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/06/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/06/07");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2017-2019 Canonical, Inc. / NASL script (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Ubuntu Local Security Checks");

  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("audit.inc");
include("ubuntu.inc");
include("ksplice.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 (! preg(pattern:"^(16\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 16.04", "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);

if (get_one_kb_item("Host/ksplice/kernel-cves"))
{
  rm_kb_item(name:"Host/uptrack-uname-r");
  cve_list = make_list("CVE-2016-7913", "CVE-2016-7917", "CVE-2016-8632", "CVE-2016-9083", "CVE-2016-9084", "CVE-2016-9604", "CVE-2017-2596", "CVE-2017-2671", "CVE-2017-6001", "CVE-2017-7472", "CVE-2017-7618", "CVE-2017-7645", "CVE-2017-7889", "CVE-2017-7895");
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for USN-3312-1");
  }
  else
  {
    _ubuntu_report = ksplice_reporting_text();
  }
}

flag = 0;

if (ubuntu_check(osver:"16.04", pkgname:"linux-image-4.4.0-1014-gke", pkgver:"4.4.0-1014.14")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-4.4.0-1018-aws", pkgver:"4.4.0-1018.27")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-4.4.0-1057-raspi2", pkgver:"4.4.0-1057.64")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-4.4.0-1059-snapdragon", pkgver:"4.4.0-1059.63")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-4.4.0-79-generic", pkgver:"4.4.0-79.100")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-4.4.0-79-generic-lpae", pkgver:"4.4.0-79.100")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-4.4.0-79-lowlatency", pkgver:"4.4.0-79.100")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-aws", pkgver:"4.4.0.1018.21")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-generic", pkgver:"4.4.0.79.85")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-generic-lpae", pkgver:"4.4.0.79.85")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-gke", pkgver:"4.4.0.1014.16")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-lowlatency", pkgver:"4.4.0.79.85")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-raspi2", pkgver:"4.4.0.1057.58")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-snapdragon", pkgver:"4.4.0.1059.52")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-virtual", pkgver:"4.4.0.79.85")) 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, "linux-image-4.4-aws / linux-image-4.4-generic / etc");
}