QEMU LSI SAS1068 Host Bus Emulation mptsas_process_scsi_io_request out-of-bounds write

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

Summaryinfo

A vulnerability categorized as problematic has been discovered in QEMU. Affected is the function mptsas_process_scsi_io_request of the component LSI SAS1068 Host Bus Emulation. The manipulation results in out-of-bounds write. This vulnerability is known as CVE-2016-7423. Attacking locally is a requirement. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in QEMU (Virtualization Software) (affected version unknown). Affected is the function mptsas_process_scsi_io_request of the component LSI SAS1068 Host Bus Emulation. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on availability. CVE summarizes:

The mptsas_process_scsi_io_request function in QEMU (aka Quick Emulator), when built with LSI SAS1068 Host Bus emulation support, allows local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) via vectors involving MPTSASRequest objects.

The weakness was published 10/10/2016 by Li Qiang (Website). The advisory is shared for download at git.qemu.org. This vulnerability is traded as CVE-2016-7423 since 09/09/2016. The exploitability is told to be easy. The attack needs to be approached locally. The successful exploitation needs a authentication. There are known technical details, 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 196626 (Ubuntu Security Notification for Qemu, Qemu-kvm Vulnerabilities (USN-3125-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (94669) and SecurityFocus (BID 92997†). Similar entries are available at VDB-93311, VDB-93998, VDB-93999 and VDB-94000. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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: Out-of-bounds write
CWE: CWE-787 / 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: 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: 🔍

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

Patch: 670e56d3ed2918b3861d9216f2c0540d9e9ae0d5

Timelineinfo

09/09/2016 🔍
09/16/2016 +7 days 🔍
10/10/2016 +24 days 🔍
10/10/2016 +0 days 🔍
10/11/2016 +1 days 🔍
11/09/2016 +29 days 🔍
11/10/2016 +1 days 🔍
09/22/2022 +2142 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: git.qemu.org
Researcher: Li Qiang
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-7423 (🔍)
GCVE (CVE): GCVE-0-2016-7423
GCVE (VulDB): GCVE-100-92520
SecurityFocus: 92997 - QEMU CVE-2016-7423 Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 10/11/2016 10:06
Updated: 09/22/2022 18:16
Changes: 10/11/2016 10:06 (64), 05/06/2019 12:23 (15), 09/22/2022 18:16 (5)
Complete: 🔍
Cache ID: 216:844:103

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