RHEL 6 : qemu-kvm-rhev (RHSA-2017:0344)

This script is Copyright (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote Red Hat host is missing one or more security updates.

Description :

An update for qemu-kvm-rhev is now available for RHEV 3.X Hypervisor
and Agents for RHEL-6.

Red Hat Product Security has rated this update as having a security
impact of Important. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available for each
vulnerability from the CVE link(s) in the References section.

KVM (Kernel-based Virtual Machine) is a full virtualization solution
for Linux on a variety of architectures. The qemu-kvm-rhev packages
provide the user-space component for running virtual machines that use
KVM in environments managed by Red Hat products.

Security Fix(es) :

* Quick emulator (Qemu) built with the Cirrus CLGD 54xx VGA emulator
support is vulnerable to an out-of-bounds access issue. It could occur
while copying VGA data via bitblt copy in backward mode. A privileged
user inside a guest could use this flaw to crash the Qemu process
resulting in DoS or potentially execute arbitrary code on the host
with privileges of Qemu process on the host. (CVE-2017-2615)

* 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 Wjjzhang (Tencent.com Inc.) Li Qiang
(360.cn Inc.) for reporting CVE-2017-2615 and Ling Liu (Qihoo 360
Inc.) for reporting CVE-2016-2857.

See also :

https://www.redhat.com/security/data/cve/CVE-2016-2857.html
https://www.redhat.com/security/data/cve/CVE-2017-2615.html
http://rhn.redhat.com/errata/RHSA-2017-0344.html

Solution :

Update the affected packages.

Risk factor :

Low / CVSS Base Score : 2.1
(CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:P)
CVSS Temporal Score : 1.9
(CVSS2#E:POC/RL:U/RC:ND)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 97487 ()

Bugtraq ID:

CVE ID: CVE-2016-2857
CVE-2017-2615

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