QEMU up to 0.5.x vrend_decode.c vrend_renderer_context_create_internal resource management

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in QEMU up to 0.5.x. This issue affects the function vrend_renderer_context_create_internal of the file vrend_decode.c. The manipulation results in resource management. This vulnerability is cataloged as CVE-2016-10163. The attack must be initiated from a local position. There is no exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in QEMU up to 0.5.x (Virtualization Software). It has been classified as problematic. Affected is the function vrend_renderer_context_create_internal of the file vrend_decode.c. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. CVE summarizes:

Memory leak in the vrend_renderer_context_create_internal function in vrend_decode.c in virglrenderer before 0.6.0 allows local guest OS users to cause a denial of service (host memory consumption) by repeatedly creating a decode context.

The bug was discovered 03/14/2017. The weakness was shared 03/15/2017 by Li Qiang with 360.cn Inc. (oss-sec). The advisory is shared for download at openwall.com. This vulnerability is traded as CVE-2016-10163 since 01/25/2017. The exploitability is told to be easy. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 97913 (SUSE SLED12 / SLES12 Security Update : virglrenderer (SUSE-SU-2017:0798-1)), 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 169904 (OpenSUSE Security Update for virglrenderer (openSUSE-SU-2017:0902-1)).

Upgrading to version 0.6.0 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at cgit.freedesktop.org. The best possible mitigation is suggested to be patching the affected component. A possible mitigation has been published 1 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (97913) and SecurityFocus (BID 95784†). The entries VDB-97793, VDB-97950, VDB-98149 and VDB-98152 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.0
VulDB Temp Score: 3.8
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: Resource management
CWE: CWE-399 / CWE-404
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: 97913
Nessus Name: SUSE SLED12 / SLES12 Security Update : virglrenderer (SUSE-SU-2017:0798-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Upgrade: QEMU 0.6.0
Patch: cgit.freedesktop.org

Timelineinfo

01/23/2017 🔍
01/25/2017 +2 days 🔍
03/14/2017 +48 days 🔍
03/15/2017 +1 days 🔍
03/15/2017 +0 days 🔍
03/16/2017 +1 days 🔍
03/22/2017 +6 days 🔍
03/23/2017 +1 days 🔍
04/25/2020 +1129 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: openwall.com
Researcher: Li Qiang
Organization: 360.cn Inc.
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-10163 (🔍)
GCVE (CVE): GCVE-0-2016-10163
GCVE (VulDB): GCVE-100-98124
SecurityFocus: 95784 - QEMU CVE-2016-10163 Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 03/16/2017 13:26
Updated: 04/25/2020 16:42
Changes: 03/16/2017 13:26 (79), 04/25/2020 16:42 (2)
Complete: 🔍
Cache ID: 216:B7C:103

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