Vulnerabilities > CVE-2017-1086 - Information Exposure vulnerability in Freebsd

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(104970);
  script_version("1.8");
  script_cvs_date("Date: 2018/09/17 21:46:53");

  script_cve_id("CVE-2017-1086", "CVE-2017-1088");
  script_bugtraq_id(101857, 101861);

  script_name(english:"FreeBSD 10.3 / 10.4 / 11.0 / 11.1 : ptrace / kldstat Information Disclosure Vulnerabilities (FreeBSD-SA-17:08.ptrace) (FreeBSD-SA-17:10.kldstat)");
  script_summary(english:"Checks for the version of the FreeBSD kernel.");

  script_set_attribute(attribute:"synopsis", value:
"The remote FreeBSD host is missing a security-related update.");
  script_set_attribute(attribute:"description", value:
"The version of the FreeBSD kernel running on the remote host is prior
to 10.3-RELEASE-p24, 10.4 prior to 10.4-RELEASE-p3, 11.0 prior to
11.0-RELEASE-p15, or 11.1 prior to 11.1-RELEASE-p4. It is, therefore,
affected by a potential information disclosure vulnerabilities in
ptrace and kldstat. An authenticated, remote attacker can exploit this
issue by creating new ptrace_lwpinfo or kld_file_stat structs, which
may potentially contain unsanitized information from the kernel.");
  # https://www.freebsd.org/security/advisories/FreeBSD-SA-17:08.ptrace.asc
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5cbf9347");
  # https://www.freebsd.org/security/advisories/FreeBSD-SA-17:10.kldstat.asc
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3255f141");
  script_set_attribute(attribute:"solution", value:
"Upgrade to the appropriate FreeBSD version.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-1088");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/11/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/11/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/12/01");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");
  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2017-2018 Tenable Network Security, Inc.");

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

  exit(0);
}

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

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

# Patches are available, require paranoid since it is possible
# to manually patch and have a lower OS level.
if (report_paranoia < 2) audit(AUDIT_PARANOID);

fix = NULL;

if (release =~ "^FreeBSD-([0-9]|10\.[0-3])($|[^0-9])")
  fix = "FreeBSD-10.3_24";
else if (release =~ "^FreeBSD-10\.4($|[^0-9])")
  fix = "FreeBSD-10.4_3";
else if (release =~ "^FreeBSD-11\.0($|[^0-9])")
  fix = "FreeBSD-11.0_15";
else if (release =~ "^FreeBSD-11\.1($|[^0-9])")
  fix = "FreeBSD-11.1_4";

if (isnull(fix) || pkg_cmp(pkg:release, reference:fix) >= 0)
  audit(AUDIT_HOST_NOT, "affected");

report =
  '\n  Installed version : ' + release +
  '\n  Fixed version     : ' + fix +
  '\n';
security_report_v4(port:0, severity:SECURITY_NOTE, extra:report);

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(108517);
  script_version("1.10");
  script_cvs_date("Date: 2019/11/08");

  script_cve_id(
    "CVE-2017-1086",
    "CVE-2017-1088",
    "CVE-2017-3735",
    "CVE-2017-3736"
  );
  script_bugtraq_id(103513);
  script_xref(name:"FreeBSD", value:"SA-17:08.ptrace");
  script_xref(name:"FreeBSD", value:"SA-17:10.kldstat");
  script_xref(name:"FreeBSD", value:"SA-17:11.openssl");

  script_name(english:"pfSense < 2.4.2 Multiple Vulnerabilities (SA-17_07)");
  script_summary(english:"Checks the version of pfSense.");

  script_set_attribute(attribute:"synopsis", value:
"The remote firewall host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version number, the remote pfSense
install is a version prior to 2.4.2 It is, therefore, affected by 
multiple vulnerabilities as stated in the referenced vendor
advisories.");
  # https://www.pfsense.org/security/advisories/pfSense-SA-17_07.packages.asc
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?e1b23834");
  script_set_attribute(attribute:"solution", value:
"Upgrade to pfSense version 2.4.2 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-3735");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/09/19");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/11/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/03/21");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:pfsense:pfsense");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:bsdperimeter:pfsense");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Firewalls");

  script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("pfsense_detect.nbin");
  script_require_keys("Host/pfSense");

  exit(0);
}

include("vcf.inc");
include("vcf_extras.inc");

if (!get_kb_item("Host/pfSense")) audit(AUDIT_HOST_NOT, "pfSense");

app_info = vcf::pfsense::get_app_info();
constraints = [
  { "fixed_version" : "2.4.2" }
];

vcf::pfsense::check_version_and_report(
  app_info:app_info,
  constraints:constraints,
  severity:SECURITY_WARNING,
  flags:{xss:TRUE}
);

#
# (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(105064);
  script_version("3.4");
  script_cvs_date("Date: 2018/12/07  9:46:53");

  script_cve_id("CVE-2017-1086");
  script_xref(name:"FreeBSD", value:"SA-17:08.ptrace");

  script_name(english:"FreeBSD : FreeBSD -- Kernel data leak via ptrace(PT_LWPINFO) (34a3f9b5-dab3-11e7-b5af-a4badb2f4699)");
  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:
"Not all information in the struct ptrace_lwpinfo is relevant for the
state of any thread, and the kernel does not fill the irrelevant bytes
or short strings. Since the structure filled by the kernel is
allocated on the kernel stack and copied to userspace, a leak of
information of the kernel stack of the thread is possible from the
debugger. Impact : Some bytes from the kernel stack of the thread
using ptrace(PT_LWPINFO) call can be observed in userspace."
  );
  # https://vuxml.freebsd.org/freebsd/34a3f9b5-dab3-11e7-b5af-a4badb2f4699.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?92307b9e"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N");

  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:"2017/11/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/12/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/12/07");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2018 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>=11.1<11.1_4")) flag++;
if (pkg_test(save_report:TRUE, pkg:"FreeBSD>=11.0<11.0_15")) flag++;
if (pkg_test(save_report:TRUE, pkg:"FreeBSD>=10.4<10.4_3")) flag++;
if (pkg_test(save_report:TRUE, pkg:"FreeBSD>=10.3<10.3_24")) 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");