QEMU IO Vector hw/9pfs/9p.c v9fs_write resource management

CVSS Meta Temp Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in QEMU. Affected by this issue is the function v9fs_write of the file hw/9pfs/9p.c of the component IO Vector Handler. Executing a manipulation can lead to resource management. This vulnerability appears as CVE-2016-9106. The attack requires local access. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in QEMU (Virtualization Software) (affected version unknown) and classified as problematic. This vulnerability affects the function v9fs_write of the file hw/9pfs/9p.c of the component IO Vector Handler. The manipulation with an unknown input leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability. CVE summarizes:

Memory leak in the v9fs_write function in hw/9pfs/9p.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (memory consumption) by leveraging failure to free an IO vector.

The bug was discovered 12/09/2016. The weakness was presented 12/09/2016 by Li Qiang with 360.cn Inc. (Website). The advisory is available at git.qemu.org. This vulnerability was named CVE-2016-9106 since 10/28/2016. Local access is required to approach this attack. The successful exploitation needs a single authentication. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 95316 (SUSE SLES11 Security Update : kvm (SUSE-SU-2016:2902-1)), 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 276264 (Fedora Security Update for xen (FEDORA-2016-da6b1d277b)).

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

The vulnerability is also documented in the databases at Tenable (95316) and SecurityFocus (BID 93964†). See VDB-93308, VDB-93309, VDB-94013 and VDB-94014 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 5.8

VulDB Base Score: 6.0
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.0
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: 95316
Nessus Name: SUSE SLES11 Security Update : kvm (SUSE-SU-2016:2902-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 65785
OpenVAS Name: SuSE Update for qemu openSUSE-SU-2016:3103-1 (qemu)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: fdfcc9aeea1492f4b819a24c94dfb678145b1bf9

Timelineinfo

10/28/2016 🔍
10/28/2016 +0 days 🔍
11/24/2016 +27 days 🔍
11/25/2016 +1 days 🔍
12/09/2016 +14 days 🔍
12/09/2016 +0 days 🔍
12/09/2016 +0 days 🔍
12/10/2016 +1 days 🔍
10/05/2022 +2125 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: DLA 1599-1
Researcher: Li Qiang
Organization: 360.cn Inc.
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-9106 (🔍)
GCVE (CVE): GCVE-0-2016-9106
GCVE (VulDB): GCVE-100-94018
SecurityFocus: 93964 - QEMU 'hw/9pfs/9p.c' Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 12/10/2016 13:39
Updated: 10/05/2022 12:41
Changes: 12/10/2016 13:39 (63), 06/23/2019 09:11 (17), 10/05/2022 12:41 (5)
Complete: 🔍
Cache ID: 216::103

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