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Sicherheit: Denial of Service in QEMU
Aktuelle Meldungen Distributionen
Name: Denial of Service in QEMU
ID: RHSA-2017:2390-01
Distribution: Red Hat
Plattformen: Red Hat Virtualization
Datum: Mi, 2. August 2017, 07:35
Referenzen: https://access.redhat.com/security/cve/CVE-2017-10664

Originalnachricht

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

Synopsis: Moderate: qemu-kvm-rhev security update
Advisory ID: RHSA-2017:2390-01
Product: Red Hat Virtualization
Advisory URL: https://access.redhat.com/errata/RHSA-2017:2390
Issue date: 2017-08-01
CVE Names: CVE-2017-10664
=====================================================================

1. Summary:

An update for qemu-kvm-rhev is now available for RHEV 3.X Hypervisor and
Agents for RHEL-7 and RHEV 4.X RHEV-H and Agents for RHEL-7.

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

Managment Agent for RHEL 7 Hosts - ppc64le, x86_64
RHEV-H and VDSM for 7 Hosts - ppc64le, 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):

* Quick Emulator (QEMU) built with the Network Block Device (NBD) Server
support is vulnerable to a crash via a SIGPIPE signal. The crash can occur
if a client aborts a connection due to any failure during negotiation or
read operation. A remote user/process could use this flaw to crash the
qemu-nbd server resulting in a DoS. (CVE-2017-10664)

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

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.

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

1466190 - CVE-2017-10664 Qemu: qemu-nbd: server breaks with SIGPIPE upon client
abort
1471076 - unbreak virtio-scsi for vIOMMU
1473145 - Wrong allocation value after virDomainBlockCopy() (alloc=capacity)

6. Package List:

Managment Agent for RHEL 7 Hosts:

Source:
qemu-kvm-rhev-2.9.0-16.el7_4.3.src.rpm

ppc64le:
qemu-img-rhev-2.9.0-16.el7_4.3.ppc64le.rpm
qemu-kvm-common-rhev-2.9.0-16.el7_4.3.ppc64le.rpm
qemu-kvm-rhev-2.9.0-16.el7_4.3.ppc64le.rpm
qemu-kvm-rhev-debuginfo-2.9.0-16.el7_4.3.ppc64le.rpm
qemu-kvm-tools-rhev-2.9.0-16.el7_4.3.ppc64le.rpm

x86_64:
qemu-img-rhev-2.9.0-16.el7_4.3.x86_64.rpm
qemu-kvm-common-rhev-2.9.0-16.el7_4.3.x86_64.rpm
qemu-kvm-rhev-2.9.0-16.el7_4.3.x86_64.rpm
qemu-kvm-rhev-debuginfo-2.9.0-16.el7_4.3.x86_64.rpm
qemu-kvm-tools-rhev-2.9.0-16.el7_4.3.x86_64.rpm

RHEV-H and VDSM for 7 Hosts:

Source:
qemu-kvm-rhev-2.9.0-16.el7_4.3.src.rpm

ppc64le:
qemu-img-rhev-2.9.0-16.el7_4.3.ppc64le.rpm
qemu-kvm-common-rhev-2.9.0-16.el7_4.3.ppc64le.rpm
qemu-kvm-rhev-2.9.0-16.el7_4.3.ppc64le.rpm
qemu-kvm-rhev-debuginfo-2.9.0-16.el7_4.3.ppc64le.rpm
qemu-kvm-tools-rhev-2.9.0-16.el7_4.3.ppc64le.rpm

x86_64:
qemu-img-rhev-2.9.0-16.el7_4.3.x86_64.rpm
qemu-kvm-common-rhev-2.9.0-16.el7_4.3.x86_64.rpm
qemu-kvm-rhev-2.9.0-16.el7_4.3.x86_64.rpm
qemu-kvm-rhev-debuginfo-2.9.0-16.el7_4.3.x86_64.rpm
qemu-kvm-tools-rhev-2.9.0-16.el7_4.3.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-2017-10664
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

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

Copyright 2017 Red Hat, Inc.
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