Ubuntu Update for busybox USN-3935-1

# Copyright (C) 2019 Greenbone Networks GmbH
# Text descriptions are largely excerpted from the referenced
# advisory, and are Copyright (C) the respective author(s)
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# 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("1.3.6.1.4.1.25623.1.0.843963");
  script_version("2019-04-26T08:24:31+0000");
  script_cve_id("CVE-2011-5325", "CVE-2014-9645", "CVE-2015-9261", "CVE-2016-2147",
                "CVE-2016-2148", "CVE-2017-15873", "CVE-2017-16544", "CVE-2018-1000517",
                "CVE-2018-20679", "CVE-2019-5747");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_tag(name:"last_modification", value:"2019-04-26 08:24:31 +0000 (Fri, 26 Apr 2019)");
  script_tag(name:"creation_date", value:"2019-04-04 02:03:26 +0000 (Thu, 04 Apr 2019)");
  script_name("Ubuntu Update for busybox USN-3935-1");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2019 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=(UBUNTU14\.04 LTS|UBUNTU18\.04 LTS|UBUNTU18\.10|UBUNTU16\.04 LTS)");

  script_xref(name:"USN", value:"3935-1");
  script_xref(name:"URL", value:"http://www.ubuntu.com/usn/usn-3935-1/");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'busybox'
  package(s) announced via the USN-3935-1 advisory.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");

  script_tag(name:"insight", value:"Tyler Hicks discovered that BusyBox incorrectly handled symlinks inside tar
archives. If a user or automated system were tricked into processing a
specially crafted tar archive, a remote attacker could overwrite arbitrary
files outside of the current directory. This issue only affected Ubuntu
14.04 LTS and Ubuntu 16.04 LTS. (CVE-2011-5325)

Mathias Krause discovered that BusyBox incorrectly handled kernel module
loading restrictions. A local attacker could possibly use this issue to
bypass intended restrictions. This issue only affected Ubuntu 14.04 LTS.
(CVE-2014-9645)

It was discovered that BusyBox incorrectly handled certain ZIP archives. If
a user or automated system were tricked into processing a specially crafted
ZIP archive, a remote attacker could cause BusyBox to crash, leading to a
denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu
16.04 LTS. (CVE-2015-9261)

Nico Golde discovered that the BusyBox DHCP client incorrectly handled
certain malformed domain names. A remote attacker could possibly use this
issue to cause the DHCP client to crash, leading to a denial of service.
This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.
(CVE-2016-2147)

Nico Golde discovered that the BusyBox DHCP client incorrectly handled
certain 6RD options. A remote attacker could use this issue to cause the
DHCP client to crash, leading to a denial of service, or possibly execute
arbitrary code. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04
LTS. (CVE-2016-2148)

It was discovered that BusyBox incorrectly handled certain bzip2 archives.
If a user or automated system were tricked into processing a specially
crafted bzip2 archive, a remote attacker could cause BusyBox to crash,
leading to a denial of service, or possibly execute arbitrary code. This
issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-15873)

It was discovered that BusyBox incorrectly handled tab completion. A local
attacker could possibly use this issue to execute arbitrary code. This
issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-16544)

It was discovered that the BusyBox wget utility incorrectly handled certain
responses. A remote attacker could use this issue to cause BusyBox to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2018-1000517)

It was discovered that the BusyBox DHCP utilities incorrectly handled
certain memory operations. A remote attacker could possibly use this issue
to access sensitive information. (CVE-2018-20679, CVE-2019-5747)");

  script_tag(name:"affected", value:"'busybox' package(s) on Ubuntu 18.10, Ubuntu 18.04 LTS, Ubuntu 16.04 LTS, Ubuntu 14.04 LTS.");

  script_tag(name:"solution", value:"Please install the updated package(s).");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"package");

  exit(0);
}

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

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

res = "";
report = "";

if(release == "UBUNTU14.04 LTS") {

  if(!isnull(res = isdpkgvuln(pkg:"busybox", ver:"1:1.21.0-1ubuntu1.4", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"busybox-initramfs", ver:"1:1.21.0-1ubuntu1.4", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"busybox-static", ver:"1:1.21.0-1ubuntu1.4", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"udhcpc", ver:"1:1.21.0-1ubuntu1.4", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"udhcpd", ver:"1:1.21.0-1ubuntu1.4", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if (__pkg_match) {
    exit(99);
  }
  exit(0);
}

if(release == "UBUNTU18.04 LTS") {

  if(!isnull(res = isdpkgvuln(pkg:"busybox", ver:"1:1.27.2-2ubuntu3.2", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"busybox-initramfs", ver:"1:1.27.2-2ubuntu3.2", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"busybox-static", ver:"1:1.27.2-2ubuntu3.2", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"udhcpc", ver:"1:1.27.2-2ubuntu3.2", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"udhcpd", ver:"1:1.27.2-2ubuntu3.2", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if (__pkg_match) {
    exit(99);
  }
  exit(0);
}

if(release == "UBUNTU18.10") {

  if(!isnull(res = isdpkgvuln(pkg:"busybox", ver:"1:1.27.2-2ubuntu4.1", rls:"UBUNTU18.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"busybox-initramfs", ver:"1:1.27.2-2ubuntu4.1", rls:"UBUNTU18.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"busybox-static", ver:"1:1.27.2-2ubuntu4.1", rls:"UBUNTU18.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"udhcpc", ver:"1:1.27.2-2ubuntu4.1", rls:"UBUNTU18.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"udhcpd", ver:"1:1.27.2-2ubuntu4.1", rls:"UBUNTU18.10"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if (__pkg_match) {
    exit(99);
  }
  exit(0);
}

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

  if(!isnull(res = isdpkgvuln(pkg:"busybox", ver:"1:1.22.0-15ubuntu1.4", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"busybox-initramfs", ver:"1:1.22.0-15ubuntu1.4", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"busybox-static", ver:"1:1.22.0-15ubuntu1.4", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"udhcpc", ver:"1:1.22.0-15ubuntu1.4", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"udhcpd", ver:"1:1.22.0-15ubuntu1.4", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if (__pkg_match) {
    exit(99);
  }
  exit(0);
}

exit(0);