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.