RedHat: RHSA-2018-1113:01 Moderate: qemu-kvm-rhev security and bug fix
Summary
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):
* The Network Block Device (NBD) server in Quick Emulator (QEMU), is
vulnerable to a denial of service issue. It could occur if a client sent
large option requests, making the server waste CPU time on reading up to
4GB per request. A client could use this flaw to keep the NBD server from
serving other requests, resulting in DoS. (CVE-2017-15119)
* Qemu: vga: OOB read access during display update (CVE-2017-13672)
* Qemu: vga: reachable assert failure during display update
(CVE-2017-13673)
* Qemu: Slirp: use-after-free when sending response (CVE-2017-13711)
* VNC server implementation in Quick Emulator (QEMU) was found to be
vulnerable to an unbounded memory allocation issue, as it did not throttle
the framebuffer updates sent to its client. If the client did not consume
these updates, VNC server allocates growing memory to hold onto this data.
A malicious remote VNC client could use this flaw to cause DoS to the
server host. (CVE-2017-15124)
For more details about the security issue(s), including the impact, a CVSS
score, and other related information, refer to the CVE page(s) listed in
the References section.
Red Hat would like to thank David Buchanan for reporting CVE-2017-13672 and
CVE-2017-13673 and Wjjzhang (Tencent.com) for reporting CVE-2017-13711. The
CVE-2017-15119 issue was discovered by Eric Blake (Red Hat) and the
CVE-2017-15124 issue was discovered by Daniel Berrange (Red Hat).
Summary
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.
References
https://access.redhat.com/security/cve/CVE-2017-13672 https://access.redhat.com/security/cve/CVE-2017-13673 https://access.redhat.com/security/cve/CVE-2017-13711 https://access.redhat.com/security/cve/CVE-2017-15119 https://access.redhat.com/security/cve/CVE-2017-15124 https://access.redhat.com/security/updates/classification/#moderate
Package List
Red Hat OpenStack Platform 10.0:
Source:
qemu-kvm-rhev-2.10.0-21.el7.src.rpm
x86_64:
qemu-img-rhev-2.10.0-21.el7.x86_64.rpm
qemu-kvm-common-rhev-2.10.0-21.el7.x86_64.rpm
qemu-kvm-rhev-2.10.0-21.el7.x86_64.rpm
qemu-kvm-rhev-debuginfo-2.10.0-21.el7.x86_64.rpm
qemu-kvm-tools-rhev-2.10.0-21.el7.x86_64.rpm
Red Hat OpenStack Platform 11.0:
Source:
qemu-kvm-rhev-2.10.0-21.el7.src.rpm
x86_64:
qemu-img-rhev-2.10.0-21.el7.x86_64.rpm
qemu-kvm-common-rhev-2.10.0-21.el7.x86_64.rpm
qemu-kvm-rhev-2.10.0-21.el7.x86_64.rpm
qemu-kvm-rhev-debuginfo-2.10.0-21.el7.x86_64.rpm
qemu-kvm-tools-rhev-2.10.0-21.el7.x86_64.rpm
Red Hat OpenStack Platform 12.0:
Source:
qemu-kvm-rhev-2.10.0-21.el7.src.rpm
ppc64le:
qemu-img-rhev-2.10.0-21.el7.ppc64le.rpm
qemu-kvm-common-rhev-2.10.0-21.el7.ppc64le.rpm
qemu-kvm-rhev-2.10.0-21.el7.ppc64le.rpm
qemu-kvm-rhev-debuginfo-2.10.0-21.el7.ppc64le.rpm
qemu-kvm-tools-rhev-2.10.0-21.el7.ppc64le.rpm
x86_64:
qemu-img-rhev-2.10.0-21.el7.x86_64.rpm
qemu-kvm-common-rhev-2.10.0-21.el7.x86_64.rpm
qemu-kvm-rhev-2.10.0-21.el7.x86_64.rpm
qemu-kvm-rhev-debuginfo-2.10.0-21.el7.x86_64.rpm
qemu-kvm-tools-rhev-2.10.0-21.el7.x86_64.rpm
Red Hat OpenStack Platform 8.0 (Liberty):
Source:
qemu-kvm-rhev-2.10.0-21.el7.src.rpm
x86_64:
qemu-img-rhev-2.10.0-21.el7.x86_64.rpm
qemu-kvm-common-rhev-2.10.0-21.el7.x86_64.rpm
qemu-kvm-rhev-2.10.0-21.el7.x86_64.rpm
qemu-kvm-rhev-debuginfo-2.10.0-21.el7.x86_64.rpm
qemu-kvm-tools-rhev-2.10.0-21.el7.x86_64.rpm
Red Hat OpenStack Platform 9.0:
Source:
qemu-kvm-rhev-2.10.0-21.el7.src.rpm
x86_64:
qemu-img-rhev-2.10.0-21.el7.x86_64.rpm
qemu-kvm-common-rhev-2.10.0-21.el7.x86_64.rpm
qemu-kvm-rhev-2.10.0-21.el7.x86_64.rpm
qemu-kvm-rhev-debuginfo-2.10.0-21.el7.x86_64.rpm
qemu-kvm-tools-rhev-2.10.0-21.el7.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/
Topic
An update for qemu-kvm-rhev is now available for Red Hat OpenStack Platform10.0 (Newton), Red Hat OpenStack Platform 11.0 (Ocata), Red Hat OpenStackPlatform 12.0 (Pike), Red Hat OpenStack Platform 8.0 (Liberty), and Red HatOpenStack Platform 9.0 (Mitaka).Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.
Topic
Relevant Releases Architectures
Red Hat OpenStack Platform 10.0 - x86_64
Red Hat OpenStack Platform 11.0 - x86_64
Red Hat OpenStack Platform 12.0 - ppc64le, x86_64
Red Hat OpenStack Platform 8.0 (Liberty) - x86_64
Red Hat OpenStack Platform 9.0 - x86_64
Bugs Fixed
1486400 - CVE-2017-13711 Qemu: Slirp: use-after-free when sending response
1486560 - CVE-2017-13672 Qemu: vga: OOB read access during display update
1486588 - CVE-2017-13673 Qemu: vga: reachable assert failure during display update
1516925 - CVE-2017-15119 qemu: DoS via large option request
1525195 - CVE-2017-15124 Qemu: memory exhaustion through framebuffer update request message in VNC server
1549860 - Update qemu-kvm-rhev for RHEL 7.5 compatibility [osp-11]
1553107 - Update qemu-kvm-rhev for RHEL 7.5 compatibility [osp-10]
1557010 - Update qemu-kvm-rhev for RHEL 7.5 compatibility [osp-9]
1557011 - Update qemu-kvm-rhev for RHEL 7.5 compatibility [osp-8]
1562826 - Update qemu-kvm-rhev for RHEL 7.5 compatibility [osp-12]
