QEMU hw/9pfs/9p.c v9fs_xattrcreate Memory memory corruption

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

Summaryinfo

A vulnerability was found in QEMU. It has been classified as problematic. This impacts the function v9fs_xattrcreate of the file hw/9pfs/9p.c. This manipulation causes memory corruption (Memory). This vulnerability is registered as CVE-2016-9103. The attack needs to be launched locally. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic was found in QEMU (Virtualization Software) (unknown version). Affected by this vulnerability is the function v9fs_xattrcreate of the file hw/9pfs/9p.c. The manipulation with an unknown input leads to a memory corruption vulnerability (Memory). The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality. The summary by CVE is:

The v9fs_xattrcreate function in hw/9pfs/9p.c in QEMU (aka Quick Emulator) allows local guest OS administrators to obtain sensitive host heap memory information by reading xattribute values before writing to them.

The bug was discovered 12/09/2016. The weakness was published 12/09/2016 by Li Qiang with 360.cn Inc. (Website). It is possible to read the advisory at git.qemu.org. This vulnerability is known as CVE-2016-9103 since 10/28/2016. Attacking locally is a requirement. The requirement for exploitation is a single authentication. Technical details of the vulnerability 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 169412 (SUSE Enterprise Linux Security Update for qemu (SUSE-SU-2016:2988-1)).

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 93955†). Similar entries are available at VDB-92455, VDB-93308, VDB-93309 and VDB-93310. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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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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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Memory
Class: Memory corruption / Memory
CWE: 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: 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: eb687602853b4ae656e9236ee4222609f3a6887d

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-2016-9103 (🔍)
GCVE (CVE): GCVE-0-2016-9103
GCVE (VulDB): GCVE-100-94015
SecurityFocus: 93955 - QEMU 'hw/9pfs/9p.c' Information Disclosure Vulnerability

See also: 🔍

Entryinfo

Created: 12/10/2016 13:38
Updated: 10/05/2022 12:19
Changes: 12/10/2016 13:38 (64), 06/22/2019 20:27 (17), 10/05/2022 12:19 (6)
Complete: 🔍
Cache ID: 216::103

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