Issued:

2017-11-30

Updated:

2017-11-30

RHSA-2017:3368 - Moderate: qemu-kvm security update

Synopsis

Moderate: qemu-kvm security update

Type/Severity

Security Advisory Moderate

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 impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

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.

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.

Affected Products

Updated Packages

• qemu-kvm-1.5.3-141.el7_4.4.src.rpm
• qemu-kvm-debuginfo-1.5.3-141.el7_4.4.ppc64le.rpm
• qemu-img-1.5.3-141.el7_4.4.ppc64le.rpm
• qemu-kvm-common-1.5.3-141.el7_4.4.x86_64.rpm
• qemu-img-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
• qemu-img-1.5.3-141.el7_4.4.ppc64.rpm
• qemu-kvm-1.5.3-141.el7_4.4.x86_64.rpm
• qemu-kvm-debuginfo-1.5.3-141.el7_4.4.ppc64.rpm

Fixes

• This content is not included.BZ - 1489375
• This content is not included.BZ - 1501290

CVEs

• CVE-2017-14167
• CVE-2017-15289

References

• https://access.redhat.com/security/updates/classification/#moderate

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.