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====================================================================                   
Red Hat Security Advisory

Synopsis:          Important: qemu-kvm-rhev bug fix update
Advisory ID:       RHSA-2020:2342-01
Product:           Red Hat Virtualization
Advisory URL:      https://access.redhat.com/errata/RHSA-2020:2342
Issue date:        2020-06-01
CVE Names:         CVE-2019-14378 CVE-2020-7039 CVE-2020-8608
====================================================================
1. Summary:

An update for qemu-kvm-rhev is now available for Red Hat Virtualization for
Red Hat Virtualization Host 7.

Red Hat Product Security has rated this update as having a security impact
of Low. 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.

2. Relevant releases/architectures:

RHV-M 4.2 - x86_64

3. Description:

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):

* CVE-2020-8608 QEMU: Slirp: potential OOB access due to unsafe snprintf()
usages

* CVE-2020-7039 QEMU: slirp: OOB buffer access while emulating tcp
protocols in tcp_emu()

* CVE-2019-14378 QEMU: slirp: heap buffer overflow during packet reassembly

This update fixes the following bug:

* BZ 1804577 Backport: Passthrough host CPU microcode version to KVM guest
if using CPU passthrough to RHEL 7.7/7.8 [rhel-7.6.z]

Users of qemu-kvm are advised to upgrade to these updated packages. After
installing this update, shut down all running virtual machines. Once all
virtual machines have shut down, start them again for this update to take
effect.

4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/2974891

5. Bugs fixed (https://bugzilla.redhat.com/):

1734745 - CVE-2019-14378 QEMU: slirp: heap buffer overflow during packet reassembly
1791551 - CVE-2020-7039 QEMU: slirp: OOB buffer access while emulating tcp protocols in tcp_emu()
1798453 - CVE-2020-8608 QEMU: Slirp: potential OOB access due to unsafe snprintf() usages
1804577 - Backport: Passthrough host CPU microcode version to KVM guest if using CPU passthrough to RHEL 7.7/7.8 [rhel-7.6.z]

6. Package List:

RHV-M 4.2:

Source:
qemu-kvm-rhev-2.12.0-18.el7_6.11.src.rpm

x86_64:
qemu-img-rhev-2.12.0-18.el7_6.11.x86_64.rpm
qemu-kvm-common-rhev-2.12.0-18.el7_6.11.x86_64.rpm
qemu-kvm-rhev-2.12.0-18.el7_6.11.x86_64.rpm
qemu-kvm-rhev-debuginfo-2.12.0-18.el7_6.11.x86_64.rpm
qemu-kvm-tools-rhev-2.12.0-18.el7_6.11.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2019-14378
https://access.redhat.com/security/cve/CVE-2020-7039
https://access.redhat.com/security/cve/CVE-2020-8608
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2020 Red Hat, Inc.
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