RHEL 7 : qemu-kvm-rhev (RHSA-2015:1931)
High Nessus Plugin ID 117309
SynopsisThe remote Red Hat host is missing one or more security updates.
DescriptionUpdated qemu-kvm-rhev packages that fix one security issue are now
available for Red Hat Enterprise Virtualization Hypervisor 7.
Red Hat Product Security has rated this update as having Moderate
security impact. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available from the
CVE link in the References section.
KVM (Kernel-based Virtual Machine) is a full virtualization solution
for Linux on AMD64 and Intel 64 systems. The qemu-kvm-rhev package
provides the user-space component for running virtual machines using
It was found that the QEMU's websocket frame decoder processed
incoming frames without limiting resources used to process the header
and the payload. An attacker able to access a guest's VNC console
could use this flaw to trigger a denial of service on the host by
exhausting all available memory and CPU. (CVE-2015-1779)
This issue was discovered by Daniel P. Berrange of Red Hat.
All qemu-kvm-rhev users are advised to upgrade to these updated
packages, which contain a backported patch to correct this issue.
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.
SolutionUpdate the affected packages.