CentOS Update for qemu-guest-agent CESA-2014:1075 centos6

Published: 2014-08-21 08:09:36
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:N/AC:L/Au:N/C:P/I:P/A:P

Summary:
Check the version of qemu-guest-agent

Detection Method:
Checks if a vulnerable version is present on the target host.

Technical Details:
KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm Linux Distribution Package provides the user-space component for running virtual machines using KVM. Two integer overflow flaws were found in the QEMU block driver for QCOW version 1 disk images. A user able to alter the QEMU disk image files loaded by a guest could use either of these flaws to corrupt QEMU process memory on the host, which could potentially result in arbitrary code execution on the host with the privileges of the QEMU process. (CVE-2014-0222, CVE-2014-0223) Red Hat would like to thank NSA for reporting these issues. This update also fixes the following bugs: * In certain scenarios, when performing live incremental migration, the disk size could be expanded considerably due to the transfer of unallocated sectors past the end of the base image. With this update, the bdrv_is_allocated() function has been fixed to no longer return 'True' for unallocated sectors, and the disk size no longer changes after performing live incremental migration. (BZ#1109715) * This update enables ioeventfd in virtio-scsi-pci. This allows QEMU to process I/O requests outside of the vCPU thread, reducing the latency of submitting requests and improving single task throughput. (BZ#1123271) * Prior to this update, vendor-specific SCSI commands issued from a KVM guest did not reach the target device due to QEMU considering such commands as invalid. This update fixes this bug by properly propagating vendor-specific SCSI commands to the target device. (BZ#1125131) All qemu-kvm users are advised to upgrade to these updated Linux Distribution Packages, which contain backported patches to correct these issues. 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 Versions:
qemu-guest-agent on CentOS 6

Recommendations:
Please install the updated Linux Distribution Packages.

Detection Type:
Linux Distribution Package

Solution Type:
Vendor Patch

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2014-0222
https://nvd.nist.gov/vuln/detail/CVE-2014-0223

References:

http://lists.centos.org/pipermail/centos-announce/2014-August/020501.html

Severity
High
CVSS Score
7.5
Published
2014-08-21
Modified
2019-03-08
Category
CentOS Local Security Checks

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