RedHat: RHSA-2017-3368:01 Moderate: qemu-kvm security update
Summary
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):
* Quick Emulator (QEMU), compiled with the PC System Emulator with
multiboot feature support, is vulnerable to an OOB r/w memory access issue.
The issue could occur due to an integer overflow while loading a kernel
image during a guest boot. A user or process could use this flaw to
potentially achieve arbitrary code execution on a host. (CVE-2017-14167)
* Quick emulator (QEMU), compiled with the Cirrus CLGD 54xx VGA Emulator
support, is vulnerable to an OOB write access issue. The issue could occur
while writing to VGA memory via mode4and5 write functions. A privileged
user inside guest could use this flaw to crash the QEMU process resulting
in Denial of Serivce (DoS). (CVE-2017-15289)
Red Hat would like to thank Thomas Garnier (Google.com) for reporting
CVE-2017-14167 and Guoxiang Niu (Huawei.com) for reporting CVE-2017-15289.
Summary
Solution
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
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.
References
https://access.redhat.com/security/cve/CVE-2017-14167 https://access.redhat.com/security/cve/CVE-2017-15289 https://access.redhat.com/security/updates/classification/#moderate
Package List
Red Hat Enterprise Linux Client (v. 7):
Source:
qemu-kvm-1.5.3-141.el7_4.4.src.rpm
x86_64:
qemu-img-1.5.3-141.el7_4.4.x86_64.rpm
qemu-kvm-1.5.3-141.el7_4.4.x86_64.rpm
qemu-kvm-common-1.5.3-141.el7_4.4.x86_64.rpm
qemu-kvm-debuginfo-1.5.3-141.el7_4.4.x86_64.rpm
qemu-kvm-tools-1.5.3-141.el7_4.4.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
Source:
qemu-kvm-1.5.3-141.el7_4.4.src.rpm
x86_64:
qemu-img-1.5.3-141.el7_4.4.x86_64.rpm
qemu-kvm-1.5.3-141.el7_4.4.x86_64.rpm
qemu-kvm-common-1.5.3-141.el7_4.4.x86_64.rpm
qemu-kvm-debuginfo-1.5.3-141.el7_4.4.x86_64.rpm
qemu-kvm-tools-1.5.3-141.el7_4.4.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source:
qemu-kvm-1.5.3-141.el7_4.4.src.rpm
ppc64:
qemu-img-1.5.3-141.el7_4.4.ppc64.rpm
qemu-kvm-debuginfo-1.5.3-141.el7_4.4.ppc64.rpm
ppc64le:
qemu-img-1.5.3-141.el7_4.4.ppc64le.rpm
qemu-kvm-debuginfo-1.5.3-141.el7_4.4.ppc64le.rpm
x86_64:
qemu-img-1.5.3-141.el7_4.4.x86_64.rpm
qemu-kvm-1.5.3-141.el7_4.4.x86_64.rpm
qemu-kvm-common-1.5.3-141.el7_4.4.x86_64.rpm
qemu-kvm-debuginfo-1.5.3-141.el7_4.4.x86_64.rpm
qemu-kvm-tools-1.5.3-141.el7_4.4.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source:
qemu-kvm-1.5.3-141.el7_4.4.src.rpm
x86_64:
qemu-img-1.5.3-141.el7_4.4.x86_64.rpm
qemu-kvm-1.5.3-141.el7_4.4.x86_64.rpm
qemu-kvm-common-1.5.3-141.el7_4.4.x86_64.rpm
qemu-kvm-debuginfo-1.5.3-141.el7_4.4.x86_64.rpm
qemu-kvm-tools-1.5.3-141.el7_4.4.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
Topic
An update for qemu-kvm is now available for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux Client (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64
Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Bugs Fixed
1489375 - CVE-2017-14167 Qemu: i386: multiboot OOB access while loading kernel image
1501290 - CVE-2017-15289 Qemu: cirrus: OOB access issue in mode4and5 write functions
