Linux Distros Unpatched Vulnerability : CVE-2016-9921

medium Nessus Plugin ID 220080

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

- 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. (CVE-2016-9921)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

Plugin Details

Severity: Medium

ID: 220080

File Name: unpatched_CVE_2016_9921.nasl

Version: 1.3

Type: local

Agent: unix

Family: Misc.

Published: 3/4/2025

Updated: 8/30/2025

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2016-9921

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:centos:centos:libcacard, p-cpe:/a:redhat:enterprise_linux:libcacard-devel, p-cpe:/a:redhat:enterprise_linux:qemu-guest-agent, p-cpe:/a:redhat:enterprise_linux:qemu-kvm-rhev, p-cpe:/a:centos:centos:xen, cpe:/o:redhat:enterprise_linux:5, p-cpe:/a:redhat:enterprise_linux:qemu-guest-agent-win32, p-cpe:/a:centos:centos:qemu-kvm-common, cpe:/o:centos:centos:7, p-cpe:/a:centos:centos:qemu-guest-agent-win32, p-cpe:/a:redhat:enterprise_linux:libcacard, p-cpe:/a:centos:centos:libcacard-tools, p-cpe:/a:centos:centos:qemu-guest-agent, p-cpe:/a:centos:centos:qemu-img, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:qemu-img, cpe:/a:redhat:openstack:5::el6, p-cpe:/a:centos:centos:qemu-kvm-rhev, p-cpe:/a:redhat:enterprise_linux:kvm, p-cpe:/a:redhat:enterprise_linux:xen, p-cpe:/a:centos:centos:libcacard-devel, p-cpe:/a:redhat:enterprise_linux:qemu-kvm-common, p-cpe:/a:centos:centos:qemu-kvm, p-cpe:/a:redhat:enterprise_linux:qemu-kvm, p-cpe:/a:redhat:enterprise_linux:libcacard-tools, p-cpe:/a:redhat:enterprise_linux:qemu-kvm-tools, cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:centos:centos:qemu-kvm-tools, p-cpe:/a:centos:centos:kvm

Required KB Items: Host/OS/identifier, Host/cpu, Host/local_checks_enabled, global_settings/vendor_unpatched

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 12/8/2016

Reference Information

CVE: CVE-2016-9921

Detections

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