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Red Hat Enterprise Linux 7 RHSA-2017-3368 Moderate QEMU-KVM Security Issue

red hat
Calendar Grey November 30, 2017
Scroller Redhat
A significant security patch has been released for qemu-kvm in Red Hat Enterprise Linux 7. This update resolves pressing security vulnerabilities.
An update for qemu-kvm is now available for Red Hat Enterprise Linux 7

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.

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.

Topics%20covered

Topics Covered

security advisory Red Hat Enterprise Linux security patch Denial of Service out of bounds access qemu-kvm security impact moderate

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

Read the Full Advisory


Advisory ID: RHSA-2017:3368-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2017:3368
Issue date: 2017-11-30

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.

Topics%20covered

Topics Covered

security advisory Red Hat Enterprise Linux security patch Denial of Service out of bounds access qemu-kvm security impact moderate

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

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