QEMU Transfer Request Block hw/usb/hcd-xhci.c xhci_ring_fetch resource management
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.0 | $0-$5k | 0.00 |
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)).
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
The vulnerability is also documented in the vulnerability database at Tenable (900047). The entries 92454, 92455, 92462 and 93310 are pretty similar.
Product
Type
Name
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.0VulDB 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: 🔍
CVSSv2
AV | AC | Au | C | I | A |
---|---|---|---|---|---|
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
---|---|---|---|---|---|
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Resource managementCWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍
Local: Yes
Remote: No
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
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 Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Patch: 05f43d44e4bc26611ce25fd7d726e483f73363ce
Timeline
10/10/2016 🔍10/10/2016 🔍
11/04/2016 🔍
11/04/2016 🔍
11/07/2016 🔍
09/29/2022 🔍
Sources
Product: qemu.orgAdvisory: RHSA-2017:2392
Researcher: Li Qiang
Organization: 360.cn Inc.
Status: Not defined
Confirmation: 🔍
CVE: CVE-2016-8576 (🔍)
SecurityFocus: 93469 - QEMU 'hw/usb/hcd-xhci.c' Infinite Loop Denial of Service Vulnerability
See also: 🔍
Entry
Created: 11/07/2016 22:10Updated: 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: 18:448:103
No comments yet. Languages: en.
Please log in to comment.