Vulnerabilities > CVE-2016-9923 - Use After Free vulnerability in Qemu

CVSS 5.5 - MEDIUM

Attack vector

LOCAL

Attack complexity

LOW

Privileges required

LOW

Confidentiality impact

NONE

Integrity impact

NONE

Availability impact

HIGH

local

low complexity

qemu

CWE-416

nessus

NVD

Published: 2016-12-23

Updated: 2024-11-21

Summary

Quick Emulator (Qemu) built with the 'chardev' backend support is vulnerable to a use after free issue. It could occur while hotplug and unplugging the device in the guest. A guest user/process could use this flaw to crash a Qemu process on the host resulting in DoS.

Vulnerable Configurations

Part	Description	Count
Application	Qemu Qemu Qemu - Qemu Qemu 0.1 Qemu Qemu 0.1.0 Qemu Qemu 0.1.1 Qemu Qemu 0.1.2 Qemu Qemu 0.1.3 Qemu Qemu 0.1.4 Qemu Qemu 0.1.5 Qemu Qemu 0.1.6 Qemu Qemu 0.2 Qemu Qemu 0.2.0 Qemu Qemu 0.3 Qemu Qemu 0.3.0 Qemu Qemu 0.4 Qemu Qemu 0.4.0 Qemu Qemu 0.4.1 Qemu Qemu 0.4.2 Qemu Qemu 0.4.3 Qemu Qemu 0.4.4 Qemu Qemu 0.5.0 Qemu Qemu 0.5.1 Qemu Qemu 0.5.2 Qemu Qemu 0.5.3 Qemu Qemu 0.5.4 Qemu Qemu 0.5.5 Qemu Qemu 0.6.0 Qemu Qemu 0.6.1 Qemu Qemu 0.7.0 Qemu Qemu 0.7.1 Qemu Qemu 0.7.2 Qemu Qemu 0.8.0 Qemu Qemu 0.8.1 Qemu Qemu 0.8.2 Qemu Qemu 0.9.0 Qemu Qemu 0.9.1 Qemu Qemu 0.9.1-5 Qemu Qemu 0.10.0 Qemu Qemu 0.10.1 Qemu Qemu 0.10.2 Qemu Qemu 0.10.3 Qemu Qemu 0.10.4 Qemu Qemu 0.10.5 Qemu Qemu 0.10.6 Qemu Qemu 0.11.0 Qemu Qemu 0.11.0-Rc0 Qemu Qemu 0.11.0-Rc1 Qemu Qemu 0.11.0-Rc2 Qemu Qemu 0.11.1 Qemu Qemu 0.12.0 Qemu Qemu 0.12.1 Qemu Qemu 0.12.2 Qemu Qemu 0.12.3 Qemu Qemu 0.12.4 Qemu Qemu 0.12.5 Qemu Qemu 0.13.0 Qemu Qemu 0.14.0 Qemu Qemu 0.14.1 Qemu Qemu 0.15.0 Qemu Qemu 0.15.1 Qemu Qemu 0.15.2 Qemu Qemu 1.0 Qemu Qemu 1.0.1 Qemu Qemu 1.1 Qemu Qemu 1.1.0 Qemu Qemu 1.1.1 Qemu Qemu 1.1.2 Qemu Qemu 1.1.2\+Dfsg Qemu Qemu 1.2.0 Qemu Qemu 1.2.1 Qemu Qemu 1.2.2 Qemu Qemu 1.3.0 Qemu Qemu 1.3.1 Qemu Qemu 1.4.0 Qemu Qemu 1.4.1 Qemu Qemu 1.4.2 Qemu Qemu 1.5.0 Qemu Qemu 1.5.1 Qemu Qemu 1.5.2 Qemu Qemu 1.5.3 Qemu Qemu 1.6.0 Qemu Qemu 1.6.1 Qemu Qemu 1.6.2 Qemu Qemu 1.7.0 Qemu Qemu 1.7.1 Qemu Qemu 1.7.2 Qemu Qemu 1\ Qemu Qemu 2.0.0 Qemu Qemu 2.0.1 Qemu Qemu 2.0.2 Qemu Qemu 2.1\+Dfsg Qemu Qemu 2.1.0 Qemu Qemu 2.1.1 Qemu Qemu 2.1.2 Qemu Qemu 2.1.3 Qemu Qemu 2.2.0 Qemu Qemu 2.2.1 Qemu Qemu 2.3.0 Qemu Qemu 2.3.1 Qemu Qemu 2.4.0 Qemu Qemu 2.4.0.1 Qemu Qemu 2.4.1 Qemu Qemu 2.5.0 Qemu Qemu 2.5.1 Qemu Qemu 2.5.1.1 Qemu Qemu 2.6.0 Qemu Qemu 2.6.1 Qemu Qemu 2.6.2 Qemu Qemu 2.7.0 Qemu Qemu 2.7.1	227

Common Weakness Enumeration (CWE)

CWE-416 - Use After Free

Nessus

NASL family	Gentoo Local Security Checks
NASL id	GENTOO_GLSA-201701-49.NASL
description	The remote host is affected by the vulnerability described in GLSA-201701-49 (QEMU: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in QEMU. Please review the CVE identifiers referenced below for details. Impact : A privileged user/process within a guest QEMU environment can cause a Denial of Service condition against the QEMU guest process or the host. Workaround : There is no known workaround at this time.
last seen	2020-06-01
modified	2020-06-02
plugin id	96684
published	2017-01-23
reporter	This script is Copyright (C) 2017 Tenable Network Security, Inc.
source	https://www.tenable.com/plugins/nessus/96684
title	GLSA-201701-49 : QEMU: Multiple vulnerabilities

Summary

Vulnerable Configurations

Common Weakness Enumeration (CWE)

Nessus

References