| Descripción: | Summary:
The remote host is missing an update for the 'qemu-kvm'
package(s) announced via the referenced advisory.
Vulnerability Insight:
Kernel-based Virtual Machine (KVM) is a full
virtualization solution for Linux on a variety of architectures. The qemu-kvm
package provides the user-space component for running virtual machines that use
KVM. Security Fix(es): * An industry-wide issue was found in the way many modern
microprocessor designs have implemented speculative execution of instructions (a
commonly used performance optimization). There are three primary variants of the
issue which differ in the way the speculative execution can be exploited.
Variant CVE-2017-5715 triggers the speculative execution by utilizing branch
target injection. It relies on the presence of a precisely-defined instruction
sequence in the privileged code as well as the fact that memory accesses may
cause allocation into the microprocessor's data cache even for speculatively
executed instructions that never actually commit (retire). As a result, an
unprivileged attacker could use this flaw to cross the syscall and guest/host
boundaries and read privileged memory by conducting targeted cache side-channel
attacks. (CVE-2017-5715) Note: This is the qemu-kvm side of the CVE-2017-5715
mitigation. Red Hat would like to thank Google Project Zero for reporting this
issue.
Affected Software/OS:
qemu-kvm on Red Hat Enterprise Linux Desktop (v. 6),
Red Hat Enterprise Linux Server (v. 6),
Red Hat Enterprise Linux Workstation (v. 6)
Solution:
Please Install the Updated Packages.
CVSS Score:
1.9
CVSS Vector:
AV:L/AC:M/Au:N/C:P/I:N/A:N
|
