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Test ID:1.3.6.1.4.1.25623.1.0.871748
Category:Red Hat Local Security Checks
Title:RedHat Update for qemu-kvm RHSA-2017:0083-01
Summary:The remote host is missing an update for the 'qemu-kvm'; package(s) announced via the referenced advisory.
Description:Summary:
The remote host is missing an update for the 'qemu-kvm'
package(s) announced via the referenced advisory.

Vulnerability Insight:
Kernel-based Virtual Machine (KVM) is a
full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm
packages provide the user-space component for running virtual machines using KVM.

Security Fix(es):

* An out-of-bounds read-access flaw was found in the QEMU emulator built
with IP checksum routines. The flaw could occur when computing a TCP/UDP
packet's checksum, because a QEMU function used the packet's payload length
without checking against the data buffer's size. A user inside a guest
could use this flaw to crash the QEMU process (denial of service).
(CVE-2016-2857)

Red Hat would like to thank Ling Liu (Qihoo 360 Inc.) for reporting this
issue.

Bug Fix(es):

* Previously, rebooting a guest virtual machine more than 128 times in a
short period of time caused the guest to shut down instead of rebooting,
because the virtqueue was not cleaned properly. This update ensures that
the virtqueue is cleaned more reliably, which prevents the described
problem from occurring. (BZ#1393484)

Affected Software/OS:
qemu-kvm on
Red Hat Enterprise Linux Server (v. 7)

Solution:
Please Install the Updated Packages.

CVSS Score:
3.6

CVSS Vector:
AV:L/AC:L/Au:N/C:P/I:N/A:P

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2016-2857
84130
http://www.securityfocus.com/bid/84130
RHSA-2016:2670
http://rhn.redhat.com/errata/RHSA-2016-2670.html
RHSA-2016:2671
http://rhn.redhat.com/errata/RHSA-2016-2671.html
RHSA-2016:2704
http://rhn.redhat.com/errata/RHSA-2016-2704.html
RHSA-2016:2705
http://rhn.redhat.com/errata/RHSA-2016-2705.html
RHSA-2016:2706
http://rhn.redhat.com/errata/RHSA-2016-2706.html
RHSA-2017:0083
http://rhn.redhat.com/errata/RHSA-2017-0083.html
RHSA-2017:0309
http://rhn.redhat.com/errata/RHSA-2017-0309.html
RHSA-2017:0334
http://rhn.redhat.com/errata/RHSA-2017-0334.html
RHSA-2017:0344
http://rhn.redhat.com/errata/RHSA-2017-0344.html
RHSA-2017:0350
http://rhn.redhat.com/errata/RHSA-2017-0350.html
USN-2974-1
http://www.ubuntu.com/usn/USN-2974-1
[debian-lts-announce] 20181130 [SECURITY] [DLA 1599-1] qemu security update
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
[oss-security] 20160303 CVE request Qemu: net: out of bounds read in net_checksum_calculate
http://www.openwall.com/lists/oss-security/2016/03/03/9
[oss-security] 20160306 Re: CVE request Qemu: net: out of bounds read in net_checksum_calculate
http://www.openwall.com/lists/oss-security/2016/03/07/3
http://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=362786f14a753d8a5256ef97d7c10ed576d6572b
CopyrightCopyright (C) 2017 Greenbone AG

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