drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Denial of Service in QEMU
Name: |
Denial of Service in QEMU |
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ID: |
RHSA-2017:2628-01 |
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Distribution: |
Red Hat |
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Plattformen: |
Red Hat Virtualization |
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Datum: |
Mi, 6. September 2017, 07:49 |
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Referenzen: |
https://access.redhat.com/security/cve/CVE-2017-7539 |
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Applikationen: |
QEMU |
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Originalnachricht |
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
===================================================================== Red Hat Security Advisory
Synopsis: Moderate: qemu-kvm-rhev security and bug fix update Advisory ID: RHSA-2017:2628-01 Product: Red Hat Virtualization Advisory URL: https://access.redhat.com/errata/RHSA-2017:2628 Issue date: 2017-09-05 CVE Names: CVE-2017-7539 =====================================================================
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):
* An assertion-failure flaw was found in the Network Block Device (NBD) server's initial connection negotiation, where the I/O co-routine was undefined. This could crash the qemu-nbd server if a client sent unexpected data during connection negotiation. A remote user or process could use this flaw to crash the qemu-nbd server resulting in denial of service. (CVE-2017-7539)
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/):
1473622 - CVE-2017-7539 Qemu: qemu-nbd crashes due to undefined I/O coroutine 1482515 - [Tracing] capturing trace data failed [rhel-7.4.z] 1482851 - Requires for the seabios version that support vIOMMU of virtio [rhel-7.4.z] 1482856 - Unable to start vhost if iommu_platform=on but intel_iommu=on not specified in guest [rhel-7.4.z]
6. Package List:
Managment Agent for RHEL 7 Hosts:
Source: qemu-kvm-rhev-2.9.0-16.el7_4.5.src.rpm
ppc64le: qemu-img-rhev-2.9.0-16.el7_4.5.ppc64le.rpm qemu-kvm-common-rhev-2.9.0-16.el7_4.5.ppc64le.rpm qemu-kvm-rhev-2.9.0-16.el7_4.5.ppc64le.rpm qemu-kvm-rhev-debuginfo-2.9.0-16.el7_4.5.ppc64le.rpm qemu-kvm-tools-rhev-2.9.0-16.el7_4.5.ppc64le.rpm
x86_64: qemu-img-rhev-2.9.0-16.el7_4.5.x86_64.rpm qemu-kvm-common-rhev-2.9.0-16.el7_4.5.x86_64.rpm qemu-kvm-rhev-2.9.0-16.el7_4.5.x86_64.rpm qemu-kvm-rhev-debuginfo-2.9.0-16.el7_4.5.x86_64.rpm qemu-kvm-tools-rhev-2.9.0-16.el7_4.5.x86_64.rpm
RHEV-H and VDSM for 7 Hosts:
Source: qemu-kvm-rhev-2.9.0-16.el7_4.5.src.rpm
ppc64le: qemu-img-rhev-2.9.0-16.el7_4.5.ppc64le.rpm qemu-kvm-common-rhev-2.9.0-16.el7_4.5.ppc64le.rpm qemu-kvm-rhev-2.9.0-16.el7_4.5.ppc64le.rpm qemu-kvm-rhev-debuginfo-2.9.0-16.el7_4.5.ppc64le.rpm qemu-kvm-tools-rhev-2.9.0-16.el7_4.5.ppc64le.rpm
x86_64: qemu-img-rhev-2.9.0-16.el7_4.5.x86_64.rpm qemu-kvm-common-rhev-2.9.0-16.el7_4.5.x86_64.rpm qemu-kvm-rhev-2.9.0-16.el7_4.5.x86_64.rpm qemu-kvm-rhev-debuginfo-2.9.0-16.el7_4.5.x86_64.rpm qemu-kvm-tools-rhev-2.9.0-16.el7_4.5.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-2017-7539 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. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1
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