Linux: Disable prelink

# Copyright (C) 2020 Greenbone Networks GmbH
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(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("1.3.6.1.4.1.25623.1.0.150502");
  script_version("2021-03-03T15:26:07+0000");
  script_tag(name:"last_modification", value:"2021-03-03 15:26:07 +0000 (Wed, 03 Mar 2021)");
  script_tag(name:"creation_date", value:"2020-12-11 14:04:26 +0000 (Fri, 11 Dec 2020)");
  script_tag(name:"cvss_base", value:"0.0");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:H/Au:S/C:N/I:N/A:N");
  script_tag(name:"qod", value:"97");

  script_name("Linux: Disable prelink");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2020 Greenbone Networks GmbH");
  script_family("Policy");
  script_dependencies("gather-package-list.nasl", "compliance_tests.nasl");
  script_mandatory_keys("Compliance/Launch");

  script_xref(name:"URL", value:"https://linux.die.net/man/8/prelink");

  script_xref(name:"Policy", value:"CIS Distribution Independent Linux v2.0.0: 1.5.4 Ensure prelink is disabled (Scored)");
  script_xref(name:"Policy", value:"CIS Controls Version 7: 14.9 Enforce Detail Logging for Access or Changes to Sensitive Data");

  script_tag(name:"summary", value:"prelink is a program that modifies ELF shared libraries and ELF dynamically linked
binaries in such a way that the time needed for the dynamic linker to perform relocations
at startup significantly decreases.");

  exit(0);
}

include( "ssh_func.inc" );
include( "policy_functions.inc" );

cmd = "[rpm -q, dpkg -s]  prelink";
title = "Disable prelink";
solution = "Uninstall prelink using the appropriate package manager or manual installation";
test_type = "SSH_Cmd";
default = "Disabled";

if( ! get_kb_item( "login/SSH/success" ) ) {
  value = "Error";
  compliant = "incomplete";
  note = "No SSH connection possible";
} else {
  if( version = get_package_version( package:"prelink" ) ) {
    value = "Enabled";
    compliant = "no";
  } else {
    value = "Disabled";
    compliant = "yes";
  }
}

policy_reporting( result:value, default:default, compliant:compliant, fixtext:solution,
  type:test_type, test:cmd, info:note );

policy_set_kbs( type:test_type, cmd:cmd, default:default, solution:solution, title:title,
  value:value, compliant:compliant );

exit( 0 );