Debian LTS: Security Advisory for linux (DLA-849-1)

2018-01-12T00:00:00
ID OPENVAS:1361412562310890849
Type openvas
Reporter Copyright (C) 2018 Greenbone Networks GmbH http://greenbone.net
Modified 2020-01-29T00:00:00

Description

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or have other impacts.

CVE-2016-9588

Jim Mattson discovered that the KVM implementation for Intel x86 processors does not properly handle #BP and #OF exceptions in an L2 (nested) virtual machine. A local attacker in an L2 guest VM can take advantage of this flaw to cause a denial of service for the L1 guest VM.

CVE-2017-2636

Alexander Popov discovered a race condition flaw in the n_hdlc line discipline that can lead to a double free. A local unprivileged user can take advantage of this flaw for privilege escalation. On systems that do not already have the n_hdlc module loaded, this can be mitigated by disabling it: echo >> /etc/modprobe.d/disable-n_hdlc.conf install n_hdlc false

CVE-2017-5669

Gareth Evans reported that privileged users can map memory at address 0 through the shmat() system call. This could make it easier to exploit other kernel security vulnerabilities via a set-UID program.

CVE-2017-5986

Alexander Popov reported a race condition in the SCTP implementation that can be used by local users to cause a denial-of-service (crash). The initial fix for this was incorrect and introduced further security issues (CVE-2017-6353). This update includes a later fix that avoids those. On systems that do not already have the sctp module loaded, this can be mitigated by disabling it: echo >> /etc/modprobe.d/disable-sctp.conf install sctp false

CVE-2017-6214

Dmitry Vyukov reported a bug in the TCP implementation

                                        
                                            # Copyright (C) 2018 Greenbone Networks GmbH
# Text descriptions are largely excerpted from the referenced
# advisory, and are Copyright (C) of the respective author(s)
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
# 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_oid("1.3.6.1.4.1.25623.1.0.890849");
  script_version("2020-01-29T08:22:52+0000");
  script_cve_id("CVE-2016-9588", "CVE-2017-2636", "CVE-2017-5669", "CVE-2017-5986", "CVE-2017-6214", "CVE-2017-6345", "CVE-2017-6346", "CVE-2017-6348", "CVE-2017-6353");
  script_name("Debian LTS: Security Advisory for linux (DLA-849-1)");
  script_tag(name:"last_modification", value:"2020-01-29 08:22:52 +0000 (Wed, 29 Jan 2020)");
  script_tag(name:"creation_date", value:"2018-01-12 00:00:00 +0100 (Fri, 12 Jan 2018)");
  script_tag(name:"cvss_base", value:"7.2");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"package");

  script_xref(name:"URL", value:"https://lists.debian.org/debian-lts-announce/2017/03/msg00007.html");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2018 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", re:"ssh/login/release=DEB7");

  script_tag(name:"affected", value:"linux on Debian Linux");

  script_tag(name:"solution", value:"For Debian 7 'Wheezy', these problems have been fixed in version
3.2.86-1.

For Debian 8 'Jessie', these problems have been fixed in version
3.16.39-1+deb8u2.

We recommend that you upgrade your linux packages.");

  script_tag(name:"summary", value:"Several vulnerabilities have been discovered in the Linux kernel that
may lead to a privilege escalation, denial of service or have other
impacts.

CVE-2016-9588

Jim Mattson discovered that the KVM implementation for Intel x86
processors does not properly handle #BP and #OF exceptions in an
L2 (nested) virtual machine. A local attacker in an L2 guest VM
can take advantage of this flaw to cause a denial of service for
the L1 guest VM.

CVE-2017-2636

Alexander Popov discovered a race condition flaw in the n_hdlc
line discipline that can lead to a double free. A local
unprivileged user can take advantage of this flaw for privilege
escalation. On systems that do not already have the n_hdlc module
loaded, this can be mitigated by disabling it:
echo >> /etc/modprobe.d/disable-n_hdlc.conf install n_hdlc false

CVE-2017-5669

Gareth Evans reported that privileged users can map memory at
address 0 through the shmat() system call. This could make it
easier to exploit other kernel security vulnerabilities via a
set-UID program.

CVE-2017-5986

Alexander Popov reported a race condition in the SCTP
implementation that can be used by local users to cause a
denial-of-service (crash). The initial fix for this was incorrect
and introduced further security issues (CVE-2017-6353). This
update includes a later fix that avoids those. On systems that do
not already have the sctp module loaded, this can be mitigated by
disabling it:
echo >> /etc/modprobe.d/disable-sctp.conf install sctp false

CVE-2017-6214

Dmitry Vyukov reported a bug in the TCP implementation's handling
of urgent data in the splice() system call. This can be used by a
remote attacker for denial-of-service (hang) against applications
that read from TCP sockets with splice().

CVE-2017-6345

Andrey Konovalov reported that the LLC type 2 implementation
incorrectly assigns socket buffer ownership. This might be usable
by a local user to cause a denial-of-service (memory corruption or
crash) or privilege escalation. On systems that do not already have
the llc2 module loaded, this can be mitigated by disabling it:
echo >> /etc/modprobe.d/disable-llc2.conf install llc2 false

CVE-2017-6346

Dmitry Vyukov reported a race condition in the raw packet (af_packet)
fanout feature. Local users with the CAP_NET_RAW capability (in any
user namespace) can use this for denial-of-service and possibly for
privilege escalation.

CVE-2017-6348

Dmitry Vyukov reported that the general queue implementation in
the IrDA subsystem does not properly manage multiple locks,
possibly allowing local users to cause a denial-of-service
(deadlock) via crafted operations on IrDA devices.

For Debian 7 'Wheezy', these problems have been fixed in version
3.2.86-1.");

  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(!isnull(res = isdpkgvuln(pkg:"linux-doc-3.2", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-4-486", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-4-686-pae", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-4-all", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-4-all-amd64", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-4-all-armel", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-4-all-armhf", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-4-all-i386", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-4-amd64", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-4-common", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-4-common-rt", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-4-iop32x", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-4-ixp4xx", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-4-kirkwood", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-4-mv78xx0", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-4-mx5", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-4-omap", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-4-orion5x", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-4-rt-686-pae", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-4-rt-amd64", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-4-versatile", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-4-vexpress", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-5-486", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-5-686-pae", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-5-all", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-5-all-amd64", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-5-all-armel", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-5-all-armhf", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-5-all-i386", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-5-amd64", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-5-common", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-5-common-rt", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-5-iop32x", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-5-ixp4xx", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-5-kirkwood", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-5-mv78xx0", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-5-mx5", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-5-omap", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-5-orion5x", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-5-rt-686-pae", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-5-rt-amd64", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-5-versatile", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-headers-3.2.0-5-vexpress", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-4-486", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-4-686-pae", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-4-686-pae-dbg", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-4-amd64", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-4-amd64-dbg", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-4-iop32x", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-4-ixp4xx", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-4-kirkwood", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-4-mv78xx0", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-4-mx5", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-4-omap", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-4-orion5x", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-4-rt-686-pae", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-4-rt-686-pae-dbg", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-4-rt-amd64", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-4-rt-amd64-dbg", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-4-versatile", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-4-vexpress", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-5-486", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-5-686-pae", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-5-686-pae-dbg", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-5-amd64", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-5-amd64-dbg", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-5-iop32x", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-5-ixp4xx", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-5-kirkwood", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-5-mv78xx0", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-5-mx5", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-5-omap", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-5-orion5x", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-5-rt-686-pae", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-5-rt-686-pae-dbg", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-5-rt-amd64", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-5-rt-amd64-dbg", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-5-versatile", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.2.0-5-vexpress", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-libc-dev", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-manual-3.2", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-source-3.2", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-support-3.2.0-4", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"linux-support-3.2.0-5", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"xen-linux-system-3.2.0-4-686-pae", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"xen-linux-system-3.2.0-4-amd64", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"xen-linux-system-3.2.0-5-686-pae", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"xen-linux-system-3.2.0-5-amd64", ver:"3.2.86-1", rls:"DEB7"))) {
  report += res;
}

if(report != "") {
  security_message(data:report);
} else if(__pkg_match) {
  exit(99);
}