Debian Security Advisory DSA 3286-1 (xen - security update)

# OpenVAS Vulnerability Test
# $Id: deb_3286.nasl 6609 2017-07-07 12:05:59Z cfischer $
# Auto-generated from advisory DSA 3286-1 using nvtgen 1.0
# Script version: 1.0
#
# Author:
# Greenbone Networks
#
# Copyright:
# Copyright (c) 2015 Greenbone Networks GmbH http://greenbone.net
# Text descriptions are largely excerpted from the referenced
# advisory, and are Copyright (c) the respective author(s)
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
#


if(description)
{
    script_id(703286);
    script_version("$Revision: 6609 $");
    script_cve_id("CVE-2015-3209", "CVE-2015-4103", "CVE-2015-4104", "CVE-2015-4105",
                  "CVE-2015-4106", "CVE-2015-4163", "CVE-2015-4164");
    script_name("Debian Security Advisory DSA 3286-1 (xen - security update)");
    script_tag(name: "last_modification", value: "$Date: 2017-07-07 14:05:59 +0200 (Fri, 07 Jul 2017) $");
    script_tag(name: "creation_date", value: "2015-06-13 00:00:00 +0200 (Sat, 13 Jun 2015)");
    script_tag(name:"cvss_base", value:"7.8");
    script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:C");
    script_tag(name: "solution_type", value: "VendorFix");
    script_tag(name: "qod_type", value: "package");

    script_xref(name: "URL", value: "http://www.debian.org/security/2015/dsa-3286.html");


    script_category(ACT_GATHER_INFO);

    script_copyright("Copyright (c) 2015 Greenbone Networks GmbH http://greenbone.net");
    script_family("Debian Local Security Checks");
    script_dependencies("gather-package-list.nasl");
    script_mandatory_keys("ssh/login/debian_linux", "ssh/login/packages");
    script_tag(name: "affected",  value: "xen on Debian Linux");
        script_tag(name: "insight",   value: "Xen is a hypervisor providing services that allow multiple computer operating
systems to execute on the same computer hardware concurrently.");
    script_tag(name: "solution",  value: "For the oldstable distribution (wheezy), these problems have been fixed
in version 4.1.4-3+deb7u8. 

For the stable distribution (jessie), these problems have been fixed in
version 4.4.1-9+deb8u1. CVE-2015-3209, CVE-2015-4103, CVE-2015-4104,
CVE-2015-4105 and CVE-2015-4106 
don't affect the Xen package in stable
jessie, it uses the standard qemu package and has already been fixed in
DSA-3284-1.

For the unstable distribution (sid), these problems will be fixed soon.

We recommend that you upgrade your xen packages.");
    script_tag(name: "summary",   value: "Multiple security issues have been found in the Xen virtualisation
solution:

CVE-2015-3209 
Matt Tait discovered a flaw in the way QEMU's AMD PCnet Ethernet
emulation handles multi-TMD packets with a length above 4096 bytes.
A privileged guest user in a guest with an AMD PCNet ethernet card
enabled can potentially use this flaw to execute arbitrary code on
the host with the privileges of the hosting QEMU process.

CVE-2015-4103 
Jan Beulich discovered that the QEMU Xen code does not properly
restrict write access to the host MSI message data field, allowing
a malicious guest to cause a denial of service.

CVE-2015-4104 
Jan Beulich discovered that the QEMU Xen code does not properly
restrict access to PCI MSI mask bits, allowing a malicious guest to
cause a denial of service.

CVE-2015-4105 
Jan Beulich reported that the QEMU Xen code enables logging for PCI
MSI-X pass-through error messages, allowing a malicious guest to
cause a denial of service.

CVE-2015-4106 
Jan Beulich discovered that the QEMU Xen code does not properly restrict
write access to the PCI config space for certain PCI pass-through devices,
allowing a malicious guest to cause a denial of service, obtain sensitive
information or potentially execute arbitrary code.

CVE-2015-4163 
Jan Beulich discovered that a missing version check in the
GNTTABOP_swap_grant_ref hypercall handler may result in denial of service.
This only applies to Debian stable/jessie.

CVE-2015-4164 
Andrew Cooper discovered a vulnerability in the iret hypercall handler,
which may result in denial of service.");
    script_tag(name: "vuldetect", value: "This check tests the installed software version using the apt package manager.");
    exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-deb.inc");

res = "";
report = "";
if ((res = isdpkgvuln(pkg:"libxen-4.1", ver:"4.1.4-3+deb7u8.", rls_regex:"DEB7.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libxen-dev", ver:"4.1.4-3+deb7u8.", rls_regex:"DEB7.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libxen-ocaml", ver:"4.1.4-3+deb7u8.", rls_regex:"DEB7.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libxen-ocaml-dev", ver:"4.1.4-3+deb7u8.", rls_regex:"DEB7.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libxenstore3.0", ver:"4.1.4-3+deb7u8.", rls_regex:"DEB7.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"xen-docs-4.1", ver:"4.1.4-3+deb7u8.", rls_regex:"DEB7.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"xen-hypervisor-4.1-amd64", ver:"4.1.4-3+deb7u8.", rls_regex:"DEB7.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"xen-hypervisor-4.1-i386", ver:"4.1.4-3+deb7u8.", rls_regex:"DEB7.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"xen-system-amd64", ver:"4.1.4-3+deb7u8.", rls_regex:"DEB7.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"xen-system-i386", ver:"4.1.4-3+deb7u8.", rls_regex:"DEB7.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"xen-utils-4.1", ver:"4.1.4-3+deb7u8.", rls_regex:"DEB7.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"xen-utils-common", ver:"4.1.4-3+deb7u8.", rls_regex:"DEB7.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"xenstore-utils", ver:"4.1.4-3+deb7u8.", rls_regex:"DEB7.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libxen-4.4", ver:"4.4.1-9+deb8u1", rls_regex:"DEB8.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libxen-dev", ver:"4.4.1-9+deb8u1", rls_regex:"DEB8.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libxenstore3.0", ver:"4.4.1-9+deb8u1", rls_regex:"DEB8.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"xen-hypervisor-4.4-amd64", ver:"4.4.1-9+deb8u1", rls_regex:"DEB8.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"xen-hypervisor-4.4-arm64", ver:"4.4.1-9+deb8u1", rls_regex:"DEB8.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"xen-hypervisor-4.4-armhf", ver:"4.4.1-9+deb8u1", rls_regex:"DEB8.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"xen-system-amd64", ver:"4.4.1-9+deb8u1", rls_regex:"DEB8.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"xen-system-arm64", ver:"4.4.1-9+deb8u1", rls_regex:"DEB8.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"xen-system-armhf", ver:"4.4.1-9+deb8u1", rls_regex:"DEB8.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"xen-utils-4.4", ver:"4.4.1-9+deb8u1", rls_regex:"DEB8.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"xen-utils-common", ver:"4.4.1-9+deb8u1", rls_regex:"DEB8.[0-9]+")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"xenstore-utils", ver:"4.4.1-9+deb8u1", rls_regex:"DEB8.[0-9]+")) != NULL) {
    report += res;
}

if (report != "") {
    security_message(data:report);
} else if (__pkg_match) {
    exit(99); # Not vulnerable.
}