EulerOS Virtualization 2.5.0 : kvm (EulerOS-SA-2018-1350)
Medium Nessus Plugin ID 118438
SynopsisThe remote EulerOS Virtualization host is missing a security update.
DescriptionAccording to the version of the kvm package installed, the EulerOS
Virtualization installation on the remote host is affected by the
following vulnerability :
- Modern operating systems implement virtualization of
physical memory to efficiently use available system
resources and provide inter-domain protection through
access control and isolation. The L1TF issue was found
in the way the x86 microprocessor designs have
implemented speculative execution of instructions (a
commonly used performance optimisation) in combination
with handling of page-faults caused by terminated
virtual to physical address resolving process. As a
result, an unprivileged attacker could use this flaw to
read privileged memory of the kernel or other processes
and/or cross guest/host boundaries to read host memory
by conducting targeted cache side-channel attacks.
Note that Tenable Network Security has extracted the preceding
description block directly from the EulerOS security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.
SolutionUpdate the affected kvm package.