Vulnerabilities > CVE-2013-5691 - Permissions, Privileges, and Access Controls vulnerability in Freebsd

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2018 Jacques Vidrine and contributors
#
# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
# HTML, PDF, PostScript, RTF and so forth) with or without modification,
# are permitted provided that the following conditions are met:
# 1. Redistributions of source code (VuXML) must retain the above
#    copyright notice, this list of conditions and the following
#    disclaimer as the first lines of this file unmodified.
# 2. Redistributions in compiled form (transformed to other DTDs,
#    published online in any format, converted to PDF, PostScript,
#    RTF and other formats) must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer
#    in the documentation and/or other materials provided with the
#    distribution.
# 
# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

include("compat.inc");

if (description)
{
  script_id(70261);
  script_version("1.6");
  script_cvs_date("Date: 2018/11/10 11:49:43");

  script_cve_id("CVE-2013-5691");
  script_bugtraq_id(62302);
  script_xref(name:"FreeBSD", value:"SA-13:12.ifioctl");

  script_name(english:"FreeBSD : FreeBSD -- Insufficient credential checks in network ioctl(2) (4d87d357-202c-11e3-be06-000c29ee3065)");
  script_summary(english:"Checks for updated packages in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote FreeBSD host is missing one or more security-related
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Problem Description :

As is commonly the case, the IPv6 and ATM network layer ioctl request
handlers are written in such a way that an unrecognized request is
passed on unmodified to the link layer, which will either handle it or
return an error code.

Network interface drivers, however, assume that the SIOCSIFADDR,
SIOCSIFBRDADDR, SIOCSIFDSTADDR and SIOCSIFNETMASK requests have been
handled at the network layer, and therefore do not perform input
validation or verify the caller's credentials. Typical link-layer
actions for these requests may include marking the interface as 'up'
and resetting the underlying hardware.

Impact :

An unprivileged user with the ability to run arbitrary code can cause
any network interface in the system to perform the link layer actions
associated with a SIOCSIFADDR, SIOCSIFBRDADDR, SIOCSIFDSTADDR or
SIOCSIFNETMASK ioctl request; or trigger a kernel panic by passing a
specially crafted address structure which causes a network interface
driver to dereference an invalid pointer.

Although this has not been confirmed, the possibility that an attacker
may be able to execute arbitrary code in kernel context cannot be
ruled out."
  );
  # https://vuxml.freebsd.org/freebsd/4d87d357-202c-11e3-be06-000c29ee3065.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?936679e3"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:FreeBSD");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/09/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/09/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/10/02");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"FreeBSD Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info", "Settings/ParanoidReport");

  exit(0);
}


include("audit.inc");
include("freebsd_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);


if (report_paranoia < 2) audit(AUDIT_PARANOID);

flag = 0;

if (pkg_test(save_report:TRUE, pkg:"FreeBSD>=9.1<9.1_7")) flag++;
if (pkg_test(save_report:TRUE, pkg:"FreeBSD>=8.4<8.4_4")) flag++;
if (pkg_test(save_report:TRUE, pkg:"FreeBSD>=8.3<8.3_11")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:pkg_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");