Ubuntu Update for linux-azure USN-3718-2

###############################################################################
# OpenVAS Vulnerability Test
# $Id: gb_ubuntu_USN_3718_2.nasl 14288 2019-03-18 16:34:17Z cfischer $
#
# Ubuntu Update for linux-azure USN-3718-2
#
# Authors:
# System Generated Check
#
# Copyright:
# Copyright (C) 2018 Greenbone Networks GmbH, http://www.greenbone.net
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2
# (or any later version), as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
###############################################################################

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.843596");
  script_version("$Revision: 14288 $");
  script_tag(name:"last_modification", value:"$Date: 2019-03-18 17:34:17 +0100 (Mon, 18 Mar 2019) $");
  script_tag(name:"creation_date", value:"2018-07-24 06:00:16 +0200 (Tue, 24 Jul 2018)");
  script_cve_id("CVE-2018-1108", "CVE-2018-1094", "CVE-2018-10940", "CVE-2018-1095",
                "CVE-2018-11508", "CVE-2018-7755");
  script_tag(name:"cvss_base", value:"7.1");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:N/A:C");
  script_tag(name:"qod_type", value:"package");
  script_name("Ubuntu Update for linux-azure USN-3718-2");
  script_tag(name:"summary", value:"The remote host is missing an update for the 'linux-azure'
  package(s) announced via the referenced advisory.");
  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present
on the target host.");
  script_tag(name:"insight", value:"USN-3695-2 fixed vulnerabilities in the Linux
Hardware Enablement Kernel (HWE) kernel for Ubuntu 16.04 LTS. Unfortunately, the
fix for CVE-2018-1108 introduced a regression where insufficient early
entropy prevented services from starting, leading in some situations
to a failure to boot, This update addresses the issue.

We apologize for the inconvenience.

Original advisory details:

Jann Horn discovered that the Linux kernel's implementation of random
seed data reported that it was in a ready state before it had gathered
sufficient entropy. An attacker could use this to expose sensitive
information. (CVE-2018-1108)

Wen Xu discovered that the ext4 file system implementation in the Linux
kernel did not properly initialize the crc32c checksum driver. A local
attacker could use this to cause a denial of service (system crash).
(CVE-2018-1094)

It was discovered that the cdrom driver in the Linux kernel contained an
incorrect bounds check. A local attacker could use this to expose sensitive
information (kernel memory). (CVE-2018-10940)

Wen Xu discovered that the ext4 file system implementation in the Linux
kernel did not properly validate xattr sizes. A local attacker could use
this to cause a denial of service (system crash). (CVE-2018-1095)

Jann Horn discovered that the 32 bit adjtimex() syscall implementation for
64 bit Linux kernels did not properly initialize memory returned to user
space in some situations. A local attacker could use this to expose
sensitive information (kernel memory). (CVE-2018-11508)

It was discovered that an information leak vulnerability existed in the
floppy driver in the Linux kernel. A local attacker could use this to
expose sensitive information (kernel memory). (CVE-2018-7755)");
  script_tag(name:"affected", value:"linux-azure on Ubuntu 16.04 LTS");
  script_tag(name:"solution", value:"Please install the updated packages.");

  script_xref(name:"USN", value:"3718-2");
  script_xref(name:"URL", value:"http://www.ubuntu.com/usn/usn-3718-2/");
  script_tag(name:"solution_type", value:"VendorFix");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2018 Greenbone Networks GmbH");
  script_family("Ubuntu Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/ubuntu_linux", "ssh/login/packages", re:"ssh/login/release=UBUNTU16\.04 LTS");

  exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-deb.inc");

release = dpkg_get_ssh_release();
if(!release)
  exit(0);

res = "";

if(release == "UBUNTU16.04 LTS")
{

  if ((res = isdpkgvuln(pkg:"linux-image-4.15.0-1014-gcp", ver:"4.15.0-1014.14~16.04.1", rls:"UBUNTU16.04 LTS")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isdpkgvuln(pkg:"linux-image-4.15.0-1018-azure", ver:"4.15.0-1018.18~16.04.1", rls:"UBUNTU16.04 LTS")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isdpkgvuln(pkg:"linux-image-4.15.0-29-generic", ver:"4.15.0-29.31~16.04.1", rls:"UBUNTU16.04 LTS")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isdpkgvuln(pkg:"linux-image-4.15.0-29-generic-lpae", ver:"4.15.0-29.31~16.04.1", rls:"UBUNTU16.04 LTS")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isdpkgvuln(pkg:"linux-image-4.15.0-29-lowlatency", ver:"4.15.0-29.31~16.04.1", rls:"UBUNTU16.04 LTS")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isdpkgvuln(pkg:"linux-image-azure", ver:"4.15.0.1018.24", rls:"UBUNTU16.04 LTS")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isdpkgvuln(pkg:"linux-image-gcp", ver:"4.15.0.1014.26", rls:"UBUNTU16.04 LTS")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isdpkgvuln(pkg:"linux-image-generic-hwe-16.04", ver:"4.13.0.45.64", rls:"UBUNTU16.04 LTS")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isdpkgvuln(pkg:"linux-image-generic-lpae-hwe-16.04", ver:"4.13.0.45.64", rls:"UBUNTU16.04 LTS")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isdpkgvuln(pkg:"linux-image-gke", ver:"4.15.0.1014.26", rls:"UBUNTU16.04 LTS")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isdpkgvuln(pkg:"linux-image-lowlatency-hwe-16.04", ver:"4.13.0.45.64", rls:"UBUNTU16.04 LTS")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if (__pkg_match) exit(99);
  exit(0);
}