Prasad J Pandit, Red Hat Product Security Team, reports :
Qemu emulator built with the Virtual Network Device(virtio-net) support is vulnerable to a DoS issue. It could occur while receiving large packets over the tuntap/macvtap interfaces and when guest’s virtio-net driver did not support big/mergeable receive buffers.
An attacker on the local network could use this flaw to disable guest’s networking by sending a large number of jumbo frames to the guest, exhausting all receive buffers and thus leading to a DoS situation.
#%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 2003-2018 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('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(87692);
script_version("2.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");
script_cve_id("CVE-2015-7295");
script_name(english:"FreeBSD : qemu -- denial of service vulnerability in virtio-net support (42cbd1e8-b152-11e5-9728-002590263bf5)");
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 Virtual Network Device(virtio-net)
support is vulnerable to a DoS issue. It could occur while receiving
large packets over the tuntap/macvtap interfaces and when guest's
virtio-net driver did not support big/mergeable receive buffers.
An attacker on the local network could use this flaw to disable
guest's networking by sending a large number of jumbo frames to the
guest, exhausting all receive buffers and thus leading to a DoS
situation."
);
# http://www.openwall.com/lists/oss-security/2015/09/18/5
script_set_attribute(
attribute:"see_also",
value:"https://www.openwall.com/lists/oss-security/2015/09/18/5"
);
# http://git.qemu.org/?p=qemu.git;a=commit;h=696317f1895e836d53b670c7b77b7be93302ba08
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?ed7d716d"
);
# https://github.com/seanbruno/qemu-bsd-user/commit/0cf33fb6b49a19de32859e2cdc6021334f448fb3
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?250c754b"
);
# https://vuxml.freebsd.org/freebsd/42cbd1e8-b152-11e5-9728-002590263bf5.html
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?df122e3f"
);
script_set_attribute(attribute:"solution", value:"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
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:"2015/09/18");
script_set_attribute(attribute:"patch_publication_date", value:"2016/01/02");
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) 2016-2021 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<2.4.1")) flag++;
if (pkg_test(save_report:TRUE, pkg:"qemu-devel<2.4.1")) 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 (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");
Vendor | Product | Version | CPE |
---|---|---|---|
freebsd | freebsd | qemu | p-cpe:/a:freebsd:freebsd:qemu |
freebsd | freebsd | qemu-devel | p-cpe:/a:freebsd:freebsd:qemu-devel |
freebsd | freebsd | qemu-sbruno | p-cpe:/a:freebsd:freebsd:qemu-sbruno |
freebsd | freebsd | qemu-user-static | p-cpe:/a:freebsd:freebsd:qemu-user-static |
freebsd | freebsd | cpe:/o:freebsd:freebsd |