RedHat Update for dhcp RHSA-2011:0256-01

###############################################################################
# OpenVAS Vulnerability Test
#
# RedHat Update for dhcp RHSA-2011:0256-01
#
# Authors:
# System Generated Check
#
# Copyright:
# Copyright (c) 2012 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 = "The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows
  individual devices on an IP network to get their own network configuration
  information, including an IP address, a subnet mask, and a broadcast
  address. DHCPv6 is the DHCP protocol version for IPv6 networks.

  A flaw was found in the way the dhcpd daemon processed certain DHCPv6
  messages for addresses that had previously been declined and marked as
  abandoned internally. If a remote attacker sent such messages to dhcpd, it
  could cause dhcpd to crash due to an assertion failure if it was running as
  a DHCPv6 server. (CVE-2011-0413)

  Red Hat would like to thank Internet Systems Consortium for reporting this
  issue.

  Users running dhcpd as a DHCPv6 server should upgrade to these updated
  packages, which contain a backported patch to correct this issue. After
  installing this update, all DHCP servers will be restarted automatically.";

tag_affected = "dhcp on Red Hat Enterprise Linux Desktop (v. 6),
  Red Hat Enterprise Linux Server (v. 6),
  Red Hat Enterprise Linux Workstation (v. 6)";
tag_solution = "Please Install the Updated Packages.";



if(description)
{
  script_xref(name : "URL" , value : "https://www.redhat.com/archives/rhsa-announce/2011-February/msg00012.html");
  script_id(870696);
  script_version("$Revision: 8273 $");
  script_tag(name:"last_modification", value:"$Date: 2018-01-03 07:29:19 +0100 (Wed, 03 Jan 2018) $");
  script_tag(name:"creation_date", value:"2012-06-05 19:35:09 +0530 (Tue, 05 Jun 2012)");
  script_cve_id("CVE-2011-0413");
  script_tag(name:"cvss_base", value:"7.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_xref(name: "RHSA", value: "2011:0256-01");
  script_name("RedHat Update for dhcp RHSA-2011:0256-01");

  script_tag(name: "summary" , value: "Check for the Version of dhcp");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (c) 2012 Greenbone Networks GmbH");
  script_family("Red Hat Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/rhel", "ssh/login/rpms");
  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-rpm.inc");

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

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

if(release == "RHENT_6")
{

  if ((res = isrpmvuln(pkg:"dhclient", rpm:"dhclient~4.1.1~12.P1.el6_0.2", rls:"RHENT_6")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"dhcp", rpm:"dhcp~4.1.1~12.P1.el6_0.2", rls:"RHENT_6")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"dhcp-debuginfo", rpm:"dhcp-debuginfo~4.1.1~12.P1.el6_0.2", rls:"RHENT_6")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

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