QEMU Transfer Request Block hw/usb/hcd-xhci.c xhci_ring_fetch resource management

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in QEMU. Impacted is the function xhci_ring_fetch of the file hw/usb/hcd-xhci.c of the component Transfer Request Block Handler. This manipulation causes resource management. This vulnerability is tracked as CVE-2016-8576. The attack is restricted to local execution. No exploit exists.

Detailsinfo

A vulnerability has been found in QEMU (Virtualization Software) (the affected version is unknown) and classified as critical. Affected by this vulnerability is the function xhci_ring_fetch of the file hw/usb/hcd-xhci.c of the component Transfer Request Block 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. The summary by CVE is:

The xhci_ring_fetch function in hw/usb/hcd-xhci.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by leveraging failure to limit the number of link Transfer Request Blocks (TRB) to process.

The weakness was disclosed 11/04/2016 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-2016-8576 since 10/10/2016. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 900047 , which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276208 (Fedora Security Update for qemu (FEDORA-2016-a56fb613a8)).

Applying the patch 05f43d44e4bc26611ce25fd7d726e483f73363ce is able to eliminate this problem.

The vulnerability is also documented in the databases at Tenable (900047) and SecurityFocus (BID 93469†). The entries VDB-92454, VDB-92455, VDB-92462 and VDB-93310 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

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

NVD Base Score: 6.0
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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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: 900047
Nessus File: 🔍

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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: 05f43d44e4bc26611ce25fd7d726e483f73363ce

Timelineinfo

10/10/2016 🔍
10/10/2016 +0 days 🔍
11/04/2016 +25 days 🔍
11/04/2016 +0 days 🔍
11/07/2016 +3 days 🔍
09/29/2022 +2152 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: RHSA-2017:2392
Researcher: Li Qiang
Organization: 360.cn Inc.
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-8576 (🔍)
GCVE (CVE): GCVE-0-2016-8576
GCVE (VulDB): GCVE-100-93307
SecurityFocus: 93469 - QEMU 'hw/usb/hcd-xhci.c' Infinite Loop Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 11/07/2016 22:10
Updated: 09/29/2022 14:24
Changes: 11/07/2016 22:10 (58), 05/26/2019 16:09 (14), 09/29/2022 14:24 (4)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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