FreeBSD : drm graphics drivers -- potential information disclusure via local access (d2c2c815-3793-11ea-8be3-54e1ad3d6335)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2020 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(132943);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/29");

  script_cve_id("CVE-2019-14615");

  script_name(english:"FreeBSD : drm graphics drivers -- potential information disclusure via local access (d2c2c815-3793-11ea-8be3-54e1ad3d6335)");

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

.A potential security vulnerability in Intel(R) Processor Graphics may
allow information disclosure. Intel is releasing software updates to
mitigate this potential vulnerability.

Description: Insufficient control flow in certain data structures for
some Intel(R) Processors with Intel(R) Processor Graphics may allow an
unauthenticated user to potentially enable information disclosure via
local access.

This patch provides mitigation for Gen9 hardware only. Patches for
Gen7 and Gen7.5 will be provided later. Note that Gen8 is not impacted
due to a previously implemented workaround. The mitigation involves
using an existing hardware feature to forcibly clear down all EU state
at each context switch.");
  # https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00314.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0057a26c");
  # https://vuxml.freebsd.org/freebsd/d2c2c815-3793-11ea-8be3-54e1ad3d6335.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4290df62");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-14615");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/01/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/01/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/01/16");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:drm-current-kmod");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:drm-devel-kmod");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:drm-fbsd11.2-kmod");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:drm-fbsd12.0-kmod");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"FreeBSD Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  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);


flag = 0;

if (pkg_test(save_report:TRUE, pkg:"drm-fbsd11.2-kmod<4.11.g20200115")) flag++;
if (pkg_test(save_report:TRUE, pkg:"drm-fbsd12.0-kmod<4.16.g20200115")) flag++;
if (pkg_test(save_report:TRUE, pkg:"drm-current-kmod<4.16.g20200115")) flag++;
if (pkg_test(save_report:TRUE, pkg:"drm-devel-kmod<5.0.g20200115")) flag++;

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