QEMU hw/scsi/vmw_pvscsi.c pvscsi_convert_sglist resource management

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

Summaryinfo

A vulnerability identified as problematic has been detected in QEMU. Affected is the function pvscsi_convert_sglist of the file hw/scsi/vmw_pvscsi.c. Performing a manipulation results in resource management. This vulnerability is known as CVE-2016-7156. Attacking locally is a requirement. No exploit is 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 the function pvscsi_convert_sglist of the file hw/scsi/vmw_pvscsi.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. The summary by CVE is:

The pvscsi_convert_sglist function in hw/scsi/vmw_pvscsi.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by leveraging an incorrect cast.

The bug was discovered 12/09/2016. The weakness was published 12/10/2016 by Li Qiang with 360.cn Inc. (Website). The advisory is shared at git.qemu.org. This vulnerability is uniquely identified as CVE-2016-7156 since 09/06/2016. An attack has to be approached locally. A authentication is required for exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 94669 (Ubuntu 12.04 LTS / 14.04 LTS / 16.04 LTS / 16.10 : qemu, qemu-kvm vulnerabilities (USN-3125-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276208 (Fedora Security Update for qemu (FEDORA-2016-a56fb613a8)).

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (94669) and SecurityFocus (BID 92774†). Similar entries are available at VDB-92454, VDB-92520, VDB-93307 and VDB-93311. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 4.4
VulDB Temp Score: 4.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.4
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: 94669
Nessus Name: Ubuntu 12.04 LTS / 14.04 LTS / 16.04 LTS / 16.10 : qemu, qemu-kvm vulnerabilities (USN-3125-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 65001
OpenVAS Name: Fedora Update for qemu FEDORA-2016-3d3218ec41
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: 49adc5d3f8c6bb75e55ebfeab109c5c37dea65e8

Timelineinfo

09/06/2016 🔍
09/06/2016 +0 days 🔍
11/09/2016 +64 days 🔍
11/10/2016 +1 days 🔍
12/09/2016 +29 days 🔍
12/09/2016 +0 days 🔍
12/10/2016 +1 days 🔍
12/10/2016 +0 days 🔍
10/05/2022 +2125 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: USN-3125-1
Researcher: Li Qiang
Organization: 360.cn Inc.
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-7156 (🔍)
GCVE (CVE): GCVE-0-2016-7156
GCVE (VulDB): GCVE-100-94005
SecurityFocus: 92774 - QEMU 'pvscsi_convert_sglist()' Function Local Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 12/10/2016 13:38
Updated: 10/05/2022 10:35
Changes: 12/10/2016 13:38 (62), 06/22/2019 18:23 (17), 10/05/2022 10:29 (5), 10/05/2022 10:35 (1)
Complete: 🔍
Cache ID: 216::103

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