QEMU VGA hw/display/cirrus_vga.c cirrus_do_copy divide by zero

CVSS Meta Temp Score
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CTI Interest Score
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4.3$0-$5k0.00

A vulnerability was found in QEMU (Virtualization Software) (version unknown) and classified as problematic. This issue affects the function cirrus_do_copy of the file hw/display/cirrus_vga.c of the component VGA. The manipulation with an unknown input leads to a divide by zero vulnerability. Using CWE to declare the problem leads to CWE-369. The product divides a value by zero. Impacted is availability.

The bug was discovered 03/27/2017. The weakness was disclosed 03/27/2017 by Qinghao Tang with Qihoo 360 (oss-sec). It is possible to read the advisory at openwall.com. The identification of this vulnerability is CVE-2016-9922 since 12/08/2016. The exploitation is known to be easy. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 900039 , which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169489 (SUSE Enterprise Linux Security Update for qemu (SUSE-SU-2017:0127-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.qemu-project.org.

The vulnerability is also documented in the vulnerability database at Tenable (900039). The entries 94671, 94672, 94673 and 94674 are pretty similar.

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Divide by zero
CWE: CWE-369 / CWE-404
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 900039
Nessus File: 🔍

OpenVAS ID: 865785
OpenVAS Name: Fedora Update for xen FEDORA-2016-1b868c23a9
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 4299b90e9ba9ce5ca9024572804ba751aa1a7e70

Timelineinfo

12/08/2016 🔍
12/08/2016 +0 days 🔍
03/27/2017 +109 days 🔍
03/27/2017 +0 days 🔍
03/27/2017 +0 days 🔍
03/28/2017 +1 days 🔍
11/22/2022 +2065 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: RHSA-2017:2392
Researcher: Qinghao Tang
Organization: Qihoo 360
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-9922 (🔍)
SecurityFocus: 94803 - QEMU Divide By Zero Multiple Denial of Service Vulnerabilities
OSVDB: - CVE-2016-9922 - QEMU - Denial of Service Issue

See also: 🔍

Entryinfo

Created: 03/28/2017 10:18 PM
Updated: 11/22/2022 05:58 PM
Changes: 03/28/2017 10:18 PM (76), 11/22/2022 05:58 PM (5)
Complete: 🔍

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