Vulnerabilities > CVE-2014-7207 - Local Denial of Service vulnerability in Linux Kernel

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-2417-1. 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(79433);
  script_version("1.15");
  script_cvs_date("Date: 2019/09/19 12:54:30");

  script_cve_id("CVE-2014-3610", "CVE-2014-3611", "CVE-2014-3645", "CVE-2014-3646", "CVE-2014-3647", "CVE-2014-3673", "CVE-2014-3687", "CVE-2014-3688", "CVE-2014-3690", "CVE-2014-4608", "CVE-2014-7207", "CVE-2014-7975");
  script_bugtraq_id(68214, 70314, 70691, 70742, 70743, 70745, 70746, 70748, 70766, 70867, 70883);
  script_xref(name:"USN", value:"2417-1");

  script_name(english:"Ubuntu 12.04 LTS : linux vulnerabilities (USN-2417-1)");
  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:
"Nadav Amit reported that the KVM (Kernel Virtual Machine) mishandles
noncanonical addresses when emulating instructions that change the rip
(Instruction Pointer). A guest user with access to I/O or the MMIO can
use this flaw to cause a denial of service (system crash) of the
guest. (CVE-2014-3647)

A flaw was discovered with the handling of the invept instruction in
the KVM (Kernel Virtual Machine) subsystem of the Linux kernel. An
unprivileged guest user could exploit this flaw to cause a denial of
service (system crash) on the guest. (CVE-2014-3646)

A flaw was discovered with invept instruction support when using
nested EPT in the KVM (Kernel Virtual Machine). An unprivileged guest
user could exploit this flaw to cause a denial of service (system
crash) on the guest. (CVE-2014-3645)

Lars Bull reported a race condition in the PIT (programmable interrupt
timer) emulation in the KVM (Kernel Virtual Machine) subsystem of the
Linux kernel. A local guest user with access to PIT i/o ports could
exploit this flaw to cause a denial of service (crash) on the host.
(CVE-2014-3611)

Lars Bull and Nadav Amit reported a flaw in how KVM (the Kernel
Virtual Machine) handles noncanonical writes to certain MSR registers.
A privileged guest user can exploit this flaw to cause a denial of
service (kernel panic) on the host. (CVE-2014-3610)

A flaw in the handling of malformed ASCONF chunks by SCTP (Stream
Control Transmission Protocol) implementation in the Linux kernel was
discovered. A remote attacker could exploit this flaw to cause a
denial of service (system crash). (CVE-2014-3673)

A flaw in the handling of duplicate ASCONF chunks by SCTP (Stream
Control Transmission Protocol) implementation in the Linux kernel was
discovered. A remote attacker could exploit this flaw to cause a
denial of service (panic). (CVE-2014-3687)

It was discovered that excessive queuing by SCTP (Stream Control
Transmission Protocol) implementation in the Linux kernel can cause
memory pressure. A remote attacker could exploit this flaw to cause a
denial of service. (CVE-2014-3688)

A flaw was discovered in how the Linux kernel's KVM (Kernel Virtual
Machine) subsystem handles the CR4 control register at VM entry on
Intel processors. A local host OS user can exploit this to cause a
denial of service (kill arbitrary processes, or system disruption) by
leveraging /dev/kvm access. (CVE-2014-3690)

Don Bailey discovered a flaw in the LZO decompress algorithm used by
the Linux kernel. An attacker could exploit this flaw to cause a
denial of service (memory corruption or OOPS). (CVE-2014-4608)

It was discovered the Linux kernel's implementation of IPv6 did not
properly validate arguments in the ipv6_select_ident function. A local
user could exploit this flaw to cause a denial of service (system
crash) by leveraging tun or macvtap device access. (CVE-2014-7207)

Andy Lutomirski discovered that the Linux kernel was not checking the
CAP_SYS_ADMIN when remounting filesystems to read-only. A local user
could exploit this flaw to cause a denial of service (loss of
writability). (CVE-2014-7975).

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/2417-1/"
  );
  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:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-3.2-generic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-3.2-generic-pae");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-3.2-highbank");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-3.2-virtual");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:12.04:-:lts");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/07/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/11/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/11/25");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2014-2019 Canonical, Inc. / NASL script (C) 2014-2019 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:"^(12\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 12.04", "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-2014-3610", "CVE-2014-3611", "CVE-2014-3645", "CVE-2014-3646", "CVE-2014-3647", "CVE-2014-3673", "CVE-2014-3687", "CVE-2014-3688", "CVE-2014-3690", "CVE-2014-4608", "CVE-2014-7207", "CVE-2014-7975");
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for USN-2417-1");
  }
  else
  {
    _ubuntu_report = ksplice_reporting_text();
  }
}

flag = 0;

if (ubuntu_check(osver:"12.04", pkgname:"linux-image-3.2.0-72-generic", pkgver:"3.2.0-72.107")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"linux-image-3.2.0-72-generic-pae", pkgver:"3.2.0-72.107")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"linux-image-3.2.0-72-highbank", pkgver:"3.2.0-72.107")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"linux-image-3.2.0-72-virtual", pkgver:"3.2.0-72.107")) 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-3.2-generic / linux-image-3.2-generic-pae / etc");
}

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-3060. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(78784);
  script_version("1.14");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2014-3610", "CVE-2014-3611", "CVE-2014-3645", "CVE-2014-3646", "CVE-2014-3647", "CVE-2014-3673", "CVE-2014-3687", "CVE-2014-3688", "CVE-2014-3690", "CVE-2014-7207");
  script_bugtraq_id(70691, 70742, 70743, 70745, 70746, 70748, 70766, 70768, 70867);
  script_xref(name:"DSA", value:"3060");

  script_name(english:"Debian DSA-3060-1 : linux - security update");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Several vulnerabilities have been discovered in the Linux kernel that
may lead to a denial of service :

  - CVE-2014-3610
    Lars Bull of Google and Nadav Amit reported a flaw in
    how KVM handles noncanonical writes to certain MSR
    registers. A privileged guest user can exploit this flaw
    to cause a denial of service (kernel panic) on the host.

  - CVE-2014-3611
    Lars Bull of Google reported a race condition in the PIT
    emulation code in KVM. A local guest user with access to
    PIT i/o ports could exploit this flaw to cause a denial
    of service (crash) on the host.

  - CVE-2014-3645/ CVE-2014-3646
    The Advanced Threat Research team at Intel Security
    discovered that the KVM subsystem did not handle the VM
    exits gracefully for the invept (Invalidate Translations
    Derived from EPT) and invvpid (Invalidate Translations
    Based on VPID) instructions. On hosts with an Intel
    processor and invept/invppid VM exit support, an
    unprivileged guest user could use these instructions to
    crash the guest.

  - CVE-2014-3647
    Nadav Amit reported that KVM mishandles noncanonical
    addresses when emulating instructions that change rip,
    potentially causing a failed VM-entry. A guest user with
    access to I/O or the MMIO can use this flaw to cause a
    denial of service (system crash) of the guest.

  - CVE-2014-3673
    Liu Wei of Red Hat discovered a flaw in
    net/core/skbuff.c leading to a kernel panic when
    receiving malformed ASCONF chunks. A remote attacker
    could use this flaw to crash the system.

  - CVE-2014-3687
    A flaw in the sctp stack was discovered leading to a
    kernel panic when receiving duplicate ASCONF chunks. A
    remote attacker could use this flaw to crash the system.

  - CVE-2014-3688
    It was found that the sctp stack is prone to a remotely
    triggerable memory pressure issue caused by excessive
    queueing. A remote attacker could use this flaw to cause
    denial-of-service conditions on the system.

  - CVE-2014-3690
    Andy Lutomirski discovered that incorrect register
    handling in KVM may lead to denial of service.

  - CVE-2014-7207
    Several Debian developers reported an issue in the IPv6
    networking subsystem. A local user with access to tun or
    macvtap devices, or a virtual machine connected to such
    a device, can cause a denial of service (system crash).

This update includes a bug fix related to CVE-2014-7207 that disables
UFO (UDP Fragmentation Offload) in the macvtap, tun, and virtio_net
drivers. This will cause migration of a running VM from a host running
an earlier kernel version to a host running this kernel version to
fail, if the VM has been assigned a virtio network device. In order to
migrate such a VM, it must be shut down first."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=766195"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2014-3610"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2014-3611"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2014-3645"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2014-3646"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2014-3647"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2014-3673"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2014-3687"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2014-3688"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2014-3690"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2014-7207"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2014-7207"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2014/dsa-3060"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the linux packages.

For the stable distribution (wheezy), these problems have been fixed
in version 3.2.63-2+deb7u1."
  );
  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:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:linux");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/11/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/10/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/11/03");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

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

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"7.0", prefix:"linux", reference:"3.2.63-2+deb7u1")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");