QEMU VMWARE PVSCSI Paravirtual SCSI Bus Emulation out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in QEMU. This issue affects some unknown processing of the component VMWARE PVSCSI Paravirtual SCSI Bus Emulation. Such manipulation leads to out-of-bounds. This vulnerability is referenced as CVE-2016-4952. The attack can only be performed from a local environment. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in QEMU (Virtualization Software) (unknown version) and classified as problematic. Affected by this issue is an unknown code block of the component VMWARE PVSCSI Paravirtual SCSI Bus Emulation. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is availability. CVE summarizes:

QEMU (aka Quick Emulator), when built with VMWARE PVSCSI paravirtual SCSI bus emulation support, allows local guest OS administrators to cause a denial of service (out-of-bounds array access) via vectors related to the (1) PVSCSI_CMD_SETUP_RINGS or (2) PVSCSI_CMD_SETUP_MSG_RING SCSI command.

The weakness was published 09/02/2016 (Website). The advisory is shared for download at openwall.com. This vulnerability is handled as CVE-2016-4952 since 05/23/2016. The attack needs to be approached locally. The requirement for exploitation is a simple authentication. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 91660 (SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2016:1560-1)), 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 176848 (Debian Security Update for qemu (DLA 1599-1)).

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 (91660) and SecurityFocus (BID 69654†). Similar entries are available at VDB-67460, VDB-81088, VDB-81154 and VDB-81155. 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: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / 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: 91660
Nessus Name: SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2016:1560-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 863050
OpenVAS Name: Fedora Update for qemu FEDORA-2016-73853a7a16
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/23/2016 🔍
06/13/2016 +21 days 🔍
06/17/2016 +4 days 🔍
09/02/2016 +77 days 🔍
09/02/2016 +0 days 🔍
09/03/2016 +1 days 🔍
09/14/2022 +2202 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: USN-3047-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-4952 (🔍)
GCVE (CVE): GCVE-0-2016-4952
GCVE (VulDB): GCVE-100-91040
SecurityFocus: 69654

See also: 🔍

Entryinfo

Created: 09/03/2016 10:14
Updated: 09/14/2022 15:11
Changes: 09/03/2016 10:14 (59), 04/07/2019 16:12 (13), 09/14/2022 15:11 (4)
Complete: 🔍
Cache ID: 216:6FF:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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