CentOS Update for qemu-img CESA-2017:0396 centos7

Published: 2017-03-04 04:49:30
CVE Author: NIST National Vulnerability Database

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

Detection Type:
Linux Distribution Package

Summary:
Check the version of qemu-img

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

Technical Details:
Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm Linux Distribution Packages provide the user-space component for running virtual machines that use KVM. Security Fix(es): * Quick emulator (QEMU) built with the Cirrus CLGD 54xx VGA emulator support is vulnerable to an out-of-bounds access issue. It could occur while copying VGA data via bitblt copy in backward mode. A privileged user inside a guest could use this flaw to crash the QEMU process resulting in DoS or potentially execute arbitrary code on the host with privileges of QEMU process on the host. (CVE-2017-2615) * Quick emulator (QEMU) built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrus_bitblt_cputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute arbitrary code on host with privileges of the QEMU process. (CVE-2017-2620) Red Hat would like to thank Wjjzhang (Tencent.com Inc.) and Li Qiang (360.cn Inc.) for reporting CVE-2017-2615. Bug Fix(es): * When using the virtio-blk driver on a guest virtual machine with no space on the virtual hard drive, the guest terminated unexpectedly with a 'block I/O error in device' message and the qemu-kvm process exited with a segmentation fault. This update fixes how the system_reset QEMU signal is handled in the above scenario. As a result, if a guest crashes due to no space left on the device, qemu-kvm continues running and the guest can be reset as expected. (BZ#1420049)

Affected Versions:
qemu-img on CentOS 7

Recommendations:
Please Install the Updated Packages.

Solution Type:
Vendor Patch

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

https://nvd.nist.gov/vuln/detail/CVE-2017-2615
https://nvd.nist.gov/vuln/detail/CVE-2017-2620

References:

http://lists.centos.org/pipermail/centos-announce/2017-March/022321.html

Severity
High
CVSS Score
9.0
Published
2017-03-04
Modified
2019-03-08
Category
CentOS Local Security Checks

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