Ubuntu Update for dhcp3 USN-1108-2

###############################################################################
# OpenVAS Vulnerability Test
# $Id: gb_ubuntu_USN_1108_2.nasl 7964 2017-12-01 07:32:11Z santu $
#
# Ubuntu Update for dhcp3 USN-1108-2
#
# Authors:
# System Generated Check
#
# Copyright:
# Copyright (c) 2011 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.
###############################################################################

include("revisions-lib.inc");
tag_insight = "USN-1108-1 fixed vulnerabilities in DHCP. Due to an error, the patch to fix
  the vulnerability was not properly applied on Ubuntu 9.10 and higher. This
  update fixes the problem.

  Original advisory details:
  
  Sebastian Krahmer discovered that the dhclient utility incorrectly filtered
  crafted responses. An attacker could use this flaw with a malicious DHCP
  server to execute arbitrary code, resulting in root privilege escalation.";

tag_summary = "Ubuntu Update for Linux kernel vulnerabilities USN-1108-2";
tag_affected = "dhcp3 on Ubuntu 10.10 ,
  Ubuntu 10.04 LTS ,
  Ubuntu 9.10";
tag_solution = "Please Install the Updated Packages.";


if(description)
{
  script_xref(name: "URL" , value: "http://www.ubuntu.com/usn/usn-1108-2/");
  script_id(840645);
  script_version("$Revision: 7964 $");
  script_tag(name:"last_modification", value:"$Date: 2017-12-01 08:32:11 +0100 (Fri, 01 Dec 2017) $");
  script_tag(name:"creation_date", value:"2011-05-10 14:04:15 +0200 (Tue, 10 May 2011)");
  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_xref(name: "USN", value: "1108-2");
  script_cve_id("CVE-2011-0997");
  script_name("Ubuntu Update for dhcp3 USN-1108-2");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (c) 2011 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");
  script_tag(name : "summary" , value : tag_summary);
  script_tag(name : "affected" , value : tag_affected);
  script_tag(name : "solution" , value : tag_solution);
  script_tag(name : "insight" , value : tag_insight);
  script_tag(name:"qod_type", value:"package");
  script_tag(name:"solution_type", value:"VendorFix");
  exit(0);
}


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

release = get_kb_item("ssh/login/release");


res = "";
if(release == NULL){
  exit(0);
}

if(release == "UBUNTU10.04 LTS")
{

  if ((res = isdpkgvuln(pkg:"dhcp3-client", ver:"3.1.3-2ubuntu3.2", rls:"UBUNTU10.04 LTS")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if (__pkg_match) exit(99); # Not vulnerable.
  exit(0);
}


if(release == "UBUNTU9.10")
{

  if ((res = isdpkgvuln(pkg:"dhcp3-client", ver:"3.1.2-1ubuntu7.3", rls:"UBUNTU9.10")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if (__pkg_match) exit(99); # Not vulnerable.
  exit(0);
}


if(release == "UBUNTU10.10")
{

  if ((res = isdpkgvuln(pkg:"dhcp3-client", ver:"3.1.3-2ubuntu6.2", rls:"UBUNTU10.10")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if (__pkg_match) exit(99); # Not vulnerable.
  exit(0);
}