CVE-2016-9921

Quick emulator (Qemu) built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to a divide by zero issue. It could occur while copying VGA data when cirrus graphics mode was set to be VGA. A privileged user inside guest could use this flaw to crash the Qemu process instance on the host, resulting in DoS.

CVSS v3.0 6.5 MEDIUM
CVSS v2.0 2.1 LOW

6.5^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 2.0 / Impact : 4.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope CHANGED

2.1^/10

CVSS v2.0 : LOW

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

Exploitability : 3.9 / Impact : 2.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
http://www.securityfocus.com/bid/94803	Third Party Advisory VDB Entry
http://www.openwall.com/lists/oss-security/2016/12/09/1	Mailing List Patch Third Party Advisory
https://security.gentoo.org/glsa/201701-49	Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2408	Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2392	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html	Mailing List Third Party Advisory

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:qemu:qemu::::::::
	cpe:2.3:a:qemu:qemu:2.8.0:rc0::::::
	cpe:2.3:a:qemu:qemu:2.8.0:rc1::::::
	cpe:2.3:a:qemu:qemu:2.8.0:rc2::::::

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

Configuration 3 (hide)

OR	cpe:2.3:a:redhat:openstack:7.0:::::::*
	cpe:2.3:a:redhat:openstack:6.0:::::::*
	cpe:2.3:a:redhat:openstack:10:::::::*
	cpe:2.3:a:redhat:openstack:9:::::::*
	cpe:2.3:a:redhat:openstack:8:::::::*
	cpe:2.3:a:redhat:openstack:11:::::::*

Configuration 4 (hide)

AND

cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*

Information

Published : 2016-12-23 14:59

Updated : 2023-02-12 20:50

NVD link : CVE-2016-9921

Mitre link : CVE-2016-9921

JSON object : View

CWE

CWE-369

Divide By Zero

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Products Affected

redhat

enterprise_linux
openstack
virtualization

qemu

qemu

debian

debian_linux

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