| Description: | Summary:
Check the version of qemu-guest-agent
Vulnerability Insight:
Kernel-based Virtual Machine (KVM) is a full
virtualization solution for Linux on a variety of architectures. The qemu-kvm
packages provide 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 Load & Store instructions
(a commonly used performance optimization). It relies on the presence of a
precisely-defined instruction sequence in the privileged code as well as
the fact that memory read from address to which a recent memory write has
occurred may see an older value and subsequently cause an update 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 read privileged memory by conducting targeted cache
side-channel attacks. (CVE-2018-3639)
Note: This is the qemu-kvm side of the CVE-2018-3639 mitigation.
* QEMU: cirrus: OOB access when updating VGA display (CVE-2018-7858)
* QEMU: vga: OOB read access during display update (CVE-2017-13672)
* Qemu: Out-of-bounds read in vga_draw_text routine (CVE-2018-5683)
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 Ken Johnson (Microsoft Security Response
Center) and Jann Horn (Google Project Zero) for reporting CVE-2018-3639
Ross Lagerwall (Citrix.com) for reporting CVE-2018-7858 David Buchanan for
reporting CVE-2017-13672 and Jiang Xin and Lin ZheCheng for reporting
CVE-2018-5683.
Affected Software/OS:
qemu-guest-agent on CentOS 6
Solution:
Please install the updated packages.
CVSS Score:
2.1
CVSS Vector:
AV:L/AC:L/Au:N/C:N/I:N/A:P
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