Vulnerabilities > CVE-2015-8701 - Off-by-one Error vulnerability in Qemu

#
# (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(87686);
  script_version("2.6");
  script_cvs_date("Date: 2018/11/21 10:46:31");

  script_cve_id("CVE-2015-8701");

  script_name(english:"FreeBSD : qemu -- denial of service vulnerability in Rocker switch emulation (1384f2fd-b1be-11e5-9728-002590263bf5)");
  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:
"Prasad J Pandit, Red Hat Product Security Team, reports :

Qemu emulator built with the Rocker switch emulation support is
vulnerable to an off-by-one error. It happens while processing
transmit(tx) descriptors in 'tx_consume' routine, if a descriptor was
to have more than allowed (ROCKER_TX_FRAGS_MAX=16) fragments.

A privileged user inside guest could use this flaw to cause memory
leakage on the host or crash the Qemu process instance resulting in
DoS issue."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=205813"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=205814"
  );
  # http://www.openwall.com/lists/oss-security/2015/12/28/6
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.openwall.com/lists/oss-security/2015/12/28/6"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://lists.gnu.org/archive/html/qemu-devel/2015-12/msg04629.html"
  );
  # http://git.qemu.org/?p=qemu.git;a=commit;h=007cd223de527b5f41278f2d886c1a4beb3e67aa
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?696c2bf0"
  );
  # https://github.com/seanbruno/qemu-bsd-user/commit/007cd223de527b5f41278f2d886c1a4beb3e67aa
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?3ca6c124"
  );
  # https://vuxml.freebsd.org/freebsd/1384f2fd-b1be-11e5-9728-002590263bf5.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?8884fec2"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:qemu");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:qemu-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:qemu-sbruno");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:qemu-user-static");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/12/28");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/01/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/01/04");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2018 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");

  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:"qemu<2.5.50")) flag++;
if (pkg_test(save_report:TRUE, pkg:"qemu-devel<2.5.50")) flag++;
if (pkg_test(save_report:TRUE, pkg:"qemu-sbruno<2.5.50.g20160213")) flag++;
if (pkg_test(save_report:TRUE, pkg:"qemu-user-static<2.5.50.g20160213")) 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");

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory 2016-42778e8c82.
#

include("compat.inc");

if (description)
{
  script_id(89526);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");

  script_cve_id("CVE-2015-8567", "CVE-2015-8568", "CVE-2015-8613", "CVE-2015-8701", "CVE-2015-8743", "CVE-2015-8745", "CVE-2016-1568", "CVE-2016-1922");
  script_xref(name:"FEDORA", value:"2016-42778e8c82");

  script_name(english:"Fedora 23 : qemu-2.4.1-6.fc23 (2016-42778e8c82)");
  script_summary(english:"Checks rpm output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"  - CVE-2015-8745: vmxnet3: don't assert reading registers
    in bar0 (bz #1295442) * CVE-2015-8567: net: vmxnet3:
    host memory leakage (bz #1289818) * CVE-2016-1922: i386:
    avoid NULL pointer dereference (bz #1292766) *
    CVE-2015-8613: buffer overflow in megasas_ctrl_get_info
    (bz #1284008) * CVE-2015-8701: Buffer overflow in
    tx_consume in rocker.c (bz #1293720) * CVE-2015-8743:
    ne2000: OOB memory access in ioport r/w functions (bz
    #1294787) * CVE-2016-1568: Use-after-free vulnerability
    in ahci (bz #1297023) * Fix modules.d/kvm.conf example
    syntax (bz #1298823)

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=1264929"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=1270876"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=1283934"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=1284008"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=1286971"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=1288532"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=1289816"
  );
  # https://lists.fedoraproject.org/pipermail/package-announce/2016-January/175967.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?67fb35c0"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected qemu package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:qemu");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:23");

  script_set_attribute(attribute:"patch_publication_date", value:"2016/01/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/03/04");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2020 Tenable Network Security, Inc.");
  script_family(english:"Fedora Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! ereg(pattern:"^23([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 23.x", "Fedora " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);

flag = 0;
if (rpm_check(release:"FC23", reference:"qemu-2.4.1-6.fc23")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "qemu");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 201602-01.
#
# The advisory text is Copyright (C) 2001-2018 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

include("compat.inc");

if (description)
{
  script_id(88587);
  script_version("2.5");
  script_cvs_date("Date: 2019/04/11 17:23:06");

  script_cve_id("CVE-2015-1779", "CVE-2015-3456", "CVE-2015-5225", "CVE-2015-5278", "CVE-2015-5279", "CVE-2015-5745", "CVE-2015-6815", "CVE-2015-6855", "CVE-2015-7295", "CVE-2015-7504", "CVE-2015-7512", "CVE-2015-7549", "CVE-2015-8345", "CVE-2015-8504", "CVE-2015-8556", "CVE-2015-8558", "CVE-2015-8567", "CVE-2015-8568", "CVE-2015-8666", "CVE-2015-8701", "CVE-2015-8743", "CVE-2015-8744", "CVE-2015-8745", "CVE-2016-1568");
  script_xref(name:"GLSA", value:"201602-01");

  script_name(english:"GLSA-201602-01 : QEMU: Multiple vulnerabilities (Venom)");
  script_summary(english:"Checks for updated package(s) in /var/db/pkg");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Gentoo host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is affected by the vulnerability described in GLSA-201602-01
(QEMU: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in QEMU. Please review the
      CVE identifiers referenced below for details.
  
Impact :

    A remote attacker might cause a Denial of Service or gain escalated
      privileges from a guest VM.
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/201602-01"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All QEMU users should upgrade to the latest version:
      # emerge --sync
      # emerge --ask --oneshot --verbose '>=app-emulation/qemu-2.5.0-r1'"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:qemu");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2016/02/04");
  script_set_attribute(attribute:"in_the_news", value:"true");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/02/05");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Gentoo Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("qpkg.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (qpkg_check(package:"app-emulation/qemu", unaffected:make_list("ge 2.5.0-r1"), vulnerable:make_list("lt 2.5.0-r1"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "QEMU");
}