QEMU Virtio GPU Device Emulator update_cursor_data_virgl memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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4.9$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in QEMU. This vulnerability affects the function update_cursor_data_virgl of the component Virtio GPU Device Emulator. Such manipulation leads to memory corruption. This vulnerability is traded as CVE-2016-9846. An attack has to be approached locally. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in QEMU (Virtualization Software) (version unknown). It has been rated as problematic. Affected by this issue is the function update_cursor_data_virgl of the component Virtio GPU Device Emulator. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is availability. CVE summarizes:

QEMU (aka Quick Emulator) built with the Virtio GPU Device emulator support is vulnerable to a memory leakage issue. It could occur while updating the cursor data in update_cursor_data_virgl. A guest user/process could use this flaw to leak host memory bytes, resulting in DoS for a host.

The bug was discovered 12/29/2016. The weakness was shared 12/29/2016 by Prasad J Pandit (Website). The advisory is shared for download at openwall.com. This vulnerability is handled as CVE-2016-9846 since 12/05/2016. The attack needs to be approached locally. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 96529 (SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2017:0127-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. 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)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (96529) and SecurityFocus (BID 94765†). The entries VDB-94671, VDB-94672, VDB-94673 and VDB-94674 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.1

VulDB Base Score: 3.8
VulDB Temp Score: 3.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 96529
Nessus Name: SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2017:0127-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for qemu FEDORA-2017-b953d4d3a4
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

12/05/2016 🔍
12/08/2016 +3 days 🔍
12/29/2016 +21 days 🔍
12/29/2016 +0 days 🔍
12/29/2016 +0 days 🔍
12/30/2016 +1 days 🔍
01/13/2017 +14 days 🔍
01/16/2017 +3 days 🔍
07/22/2019 +917 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: openwall.com
Researcher: Prasad J Pandit
Status: Not defined

CVE: CVE-2016-9846 (🔍)
GCVE (CVE): GCVE-0-2016-9846
GCVE (VulDB): GCVE-100-94724
SecurityFocus: 94765 - QEMU '/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c' Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 12/30/2016 10:29
Updated: 07/22/2019 07:18
Changes: 12/30/2016 10:29 (68), 07/22/2019 07:18 (11)
Complete: 🔍
Cache ID: 216:926:103

Once again VulDB remains the best source for vulnerability data.

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