QEMU VMWARE VMXNET3 Paravirtual NIC Emulator access control

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

A vulnerability classified as problematic has been found in QEMU (Virtualization Software) (version now known). Affected is some unknown processing of the component VMWARE VMXNET3 Paravirtual NIC Emulator. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on availability. CVE summarizes:

QEMU (aka Quick Emulator) built with a VMWARE VMXNET3 paravirtual NIC emulator support is vulnerable to crash issue. It could occur while reading Interrupt Mask Registers (IMR). A privileged (CAP_SYS_RAWIO) guest user could use this flaw to crash the QEMU process instance resulting in DoS.

The bug was discovered 01/04/2016. The weakness was released 12/29/2016 by Prasad J Pandit (Website). The advisory is shared for download at git.qemu.org. This vulnerability is traded as CVE-2015-8745 since 01/04/2016. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability was handled as a non-public zero-day exploit for at least 35 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 88630 (Debian DSA-3471-1 : qemu - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168775 (SUSE Enterprise Linux Security update for xen (SUSE-SU-2016:1154-1)).

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 (88630) and SecurityFocus (BID 79822†). Entries connected to this vulnerability are available at VDB-13216, VDB-13276, VDB-13279 and VDB-13280.

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 88630
Nessus Name: Debian DSA-3471-1 : qemu - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703471
OpenVAS Name: Debian Security Advisory DSA 3471-1 (qemu - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: git.qemu.org

Timelineinfo

01/04/2016 🔍
01/04/2016 +0 days 🔍
01/04/2016 +0 days 🔍
02/08/2016 +35 days 🔍
02/09/2016 +1 days 🔍
12/29/2016 +324 days 🔍
12/29/2016 +0 days 🔍
12/30/2016 +1 days 🔍
10/12/2022 +2112 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: git.qemu.org
Researcher: Prasad J Pandit
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-8745 (🔍)
SecurityFocus: 79822 - QEMU 'vmxnet3.c' Denial of Service Vulnerability
SecurityTracker: 1034575

See also: 🔍

Entryinfo

Created: 12/30/2016 10:29 AM
Updated: 10/12/2022 11:03 PM
Changes: 12/30/2016 10:29 AM (66), 07/21/2019 08:12 PM (12), 10/12/2022 11:03 PM (5)
Complete: 🔍
Cache ID: 18:78E:40

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