FreeBSD : qemu and xen-tools -- denial of service vulnerabilities in AMD PC-Net II NIC support (405446f4-b1b3-11e5-9728-002590263bf5)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2019 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('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(87691);
  script_version("2.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");

  script_cve_id("CVE-2015-7504", "CVE-2015-7512");

  script_name(english:"FreeBSD : qemu and xen-tools -- denial of service vulnerabilities in AMD PC-Net II NIC support (405446f4-b1b3-11e5-9728-002590263bf5)");
  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 AMD PC-Net II Ethernet Controller support
is vulnerable to a heap buffer overflow flaw. While receiving packets
in the loopback mode, it appends CRC code to the receive buffer. If
the data size given is same as the receive buffer size, the appended
CRC code overwrites 4 bytes beyond this 's->buffer' array.

A privileged(CAP_SYS_RAWIO) user inside guest could use this flaw to
crash the Qemu instance resulting in DoS or potentially execute
arbitrary code with privileges of the Qemu process on the host.

The AMD PC-Net II emulator(hw/net/pcnet.c), while receiving packets
from a remote host(non-loopback mode), fails to validate the received
data size, thus resulting in a buffer overflow issue. It could
potentially lead to arbitrary code execution on the host, with
privileges of the Qemu process. It requires the guest NIC to have
larger MTU limit.

A remote user could use this flaw to crash the guest instance
resulting in DoS or potentially execute arbitrary code on a remote
host with privileges of the Qemu process."
  );
  # http://www.openwall.com/lists/oss-security/2015/11/30/2
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.openwall.com/lists/oss-security/2015/11/30/2"
  );
  # http://www.openwall.com/lists/oss-security/2015/11/30/3
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.openwall.com/lists/oss-security/2015/11/30/3"
  );
  # http://git.qemu.org/?p=qemu.git;a=commit;h=837f21aacf5a714c23ddaadbbc5212f9b661e3f7
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?816ec3d4"
  );
  # http://git.qemu.org/?p=qemu.git;a=commit;h=8b98a2f07175d46c3f7217639bd5e03f2ec56343
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?a347bda6"
  );
  # https://github.com/seanbruno/qemu-bsd-user/commit/837f21aacf5a714c23ddaadbbc5212f9b661e3f7
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?81b29577"
  );
  # https://github.com/seanbruno/qemu-bsd-user/commit/8b98a2f07175d46c3f7217639bd5e03f2ec56343
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?98c7fdb7"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://xenbits.xen.org/xsa/advisory-162.html"
  );
  # https://vuxml.freebsd.org/freebsd/405446f4-b1b3-11e5-9728-002590263bf5.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?c52ec24c"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/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: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:"p-cpe:/a:freebsd:freebsd:xen-tools");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/11/30");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/01/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/01/04");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2021 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<2.5.0")) flag++;
if (pkg_test(save_report:TRUE, pkg:"qemu-devel<2.5.0")) flag++;
if (pkg_test(save_report:TRUE, pkg:"qemu-sbruno<2.5.50.g20151224")) flag++;
if (pkg_test(save_report:TRUE, pkg:"qemu-user-static<2.5.50.g20151224")) flag++;
if (pkg_test(save_report:TRUE, pkg:"xen-tools<4.5.2_1")) 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");