QEMU Message Ring Page Count hw/scsi/vmw_pvscsi.c resource consumption

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in QEMU. Impacted is an unknown function of the file hw/scsi/vmw_pvscsi.c of the component Message Ring Page Count Handler. Performing a manipulation results in resource consumption. This vulnerability is cataloged as CVE-2017-8112. The attack must be initiated from a local position. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in QEMU (Virtualization Software) (affected version not known). This affects some unknown functionality of the file hw/scsi/vmw_pvscsi.c of the component Message Ring Page Count Handler. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability. The summary by CVE is:

hw/scsi/vmw_pvscsi.c in QEMU (aka Quick Emulator) allow local guest OS privileged users to cause a denial of service (infinite loop and CPU consumption) via the message ring page count.

The bug was discovered 04/26/2017. The weakness was shared 05/02/2017 by Li Qiang with 360.cn Inc. (oss-sec). The advisory is shared at openwall.com. This vulnerability is uniquely identified as CVE-2017-8112 since 04/25/2017. An attack has to be approached locally. A authentication is required for exploitation. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 6 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 102008 (Fedora 25 : 2:qemu (2017-f941184db1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 170142 (SUSE Enterprise Linux Security Update for qemu (SUSE-SU-2017:1774-1)).

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

The vulnerability is also documented in the databases at Tenable (102008) and SecurityFocus (BID 98015†). The entries VDB-98316, VDB-99556, VDB-100418 and VDB-100808 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.8

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
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 consumption
CWE: CWE-400 / 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: 102008
Nessus Name: Fedora 25 : 2:qemu (2017-f941184db1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for qemu FEDORA-2017-f941184db1
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

04/25/2017 🔍
04/26/2017 +1 days 🔍
04/26/2017 +0 days 🔍
05/02/2017 +6 days 🔍
05/02/2017 +0 days 🔍
05/02/2017 +0 days 🔍
07/25/2017 +84 days 🔍
07/27/2017 +2 days 🔍
12/06/2022 +1958 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: FEDORA-2017-f941184db1
Researcher: Li Qiang
Organization: 360.cn Inc.
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-8112 (🔍)
GCVE (CVE): GCVE-0-2017-8112
GCVE (VulDB): GCVE-100-100809
SecurityFocus: 98015 - QEMU CVE-2017-8112 Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 05/02/2017 22:36
Updated: 12/06/2022 06:45
Changes: 05/02/2017 22:36 (79), 10/15/2019 09:55 (3), 12/06/2022 06:32 (4), 12/06/2022 06:45 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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