Rapid7 Vulnerability & Exploit Database

RHSA-2014:0927: qemu-kvm security and bug fix update

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RHSA-2014:0927: qemu-kvm security and bug fix update

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
07/23/2014
Created
07/25/2018
Added
07/29/2014
Modified
07/04/2017

Description

KVM (Kernel-based Virtual Machine) is a full virtualization solution forLinux on AMD64 and Intel 64 systems. The qemu-kvm package provides theuser-space component for running virtual machines using KVM.Two integer overflow flaws were found in the QEMU block driver for QCOWversion 1 disk images. A user able to alter the QEMU disk image filesloaded by a guest could use either of these flaws to corrupt QEMU processmemory on the host, which could potentially result in arbitrary codeexecution on the host with the privileges of the QEMU process.(CVE-2014-0222, CVE-2014-0223)Multiple buffer overflow, input validation, and out-of-bounds write flawswere found in the way virtio, virtio-net, virtio-scsi, usb, and hpetdrivers of QEMU handled state loading after migration. A user able to alterthe savevm data (either on the disk or over the wire during migration)could use either of these flaws to corrupt QEMU process memory on the(destination) host, which could potentially result in arbitrary codeexecution on the host with the privileges of the QEMU process.(CVE-2013-4148, CVE-2013-4149, CVE-2013-4150, CVE-2013-4151, CVE-2013-4527,CVE-2013-4529, CVE-2013-4535, CVE-2013-4536, CVE-2013-4541, CVE-2013-4542,CVE-2013-6399, CVE-2014-0182, CVE-2014-3461)These issues were discovered by Michael S. Tsirkin, Anthony Liguori andMichael Roth of Red Hat: CVE-2013-4148, CVE-2013-4149, CVE-2013-4150,CVE-2013-4151, CVE-2013-4527, CVE-2013-4529, CVE-2013-4535, CVE-2013-4536,CVE-2013-4541, CVE-2013-4542, CVE-2013-6399, CVE-2014-0182, andCVE-2014-3461.This update also fixes the following bugs:All qemu-kvm users are advised to upgrade to these updated packages, whichcontain backported patches to correct these issues. After installing thisupdate, shut down all running virtual machines. Once all virtual machineshave shut down, start them again for this update to take effect.

Solution(s)

  • redhat-upgrade-libcacard
  • redhat-upgrade-libcacard-devel
  • redhat-upgrade-libcacard-tools
  • redhat-upgrade-qemu-guest-agent
  • redhat-upgrade-qemu-img
  • redhat-upgrade-qemu-kvm
  • redhat-upgrade-qemu-kvm-common
  • redhat-upgrade-qemu-kvm-debuginfo
  • redhat-upgrade-qemu-kvm-tools

References

  • redhat-upgrade-libcacard
  • redhat-upgrade-libcacard-devel
  • redhat-upgrade-libcacard-tools
  • redhat-upgrade-qemu-guest-agent
  • redhat-upgrade-qemu-img
  • redhat-upgrade-qemu-kvm
  • redhat-upgrade-qemu-kvm-common
  • redhat-upgrade-qemu-kvm-debuginfo
  • redhat-upgrade-qemu-kvm-tools

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