QEMU XHCI Controller hw/usb/hcd-xhci.c input validation

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

Summaryinfo

A vulnerability identified as problematic has been detected in QEMU. This affects an unknown part of the file hw/usb/hcd-xhci.c of the component XHCI Controller. This manipulation causes input validation. This vulnerability appears as CVE-2017-9375. The attack requires local access. There is no available exploit. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in QEMU (Virtualization Software) (affected version not known). It has been declared as problematic. Affected by this vulnerability is some unknown functionality of the file hw/usb/hcd-xhci.c of the component XHCI Controller. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect availability. The summary by CVE is:

QEMU (aka Quick Emulator), when built with USB xHCI controller emulator support, allows local guest OS privileged users to cause a denial of service (infinite recursive call) via vectors involving control transfer descriptors sequencing.

The bug was discovered 05/06/2017. The weakness was presented 06/16/2017 by Li Qiang with Qihoo 360 (oss-sec). It is possible to read the advisory at openwall.com. This vulnerability is known as CVE-2017-9375 since 06/02/2017. 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 was handled as a non-public zero-day exploit for at least 41 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 101985 (Debian DSA-3920-1 : 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 176099 (Debian Security Update for qemu (DSA 3920-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.qemu.org. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (101985) and SecurityFocus (BID 98915†). See VDB-102641, VDB-102642, VDB-103036 and VDB-103283 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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: Input validation
CWE: CWE-20
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: 101985
Nessus Name: Debian DSA-3920-1 : qemu - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703920
OpenVAS Name: Debian Security Advisory DSA 3920-1 (qemu - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: 96d87bdda3919bb16f754b3d3fd1227e1f38f13c

Timelineinfo

05/06/2017 🔍
06/02/2017 +27 days 🔍
06/05/2017 +3 days 🔍
06/16/2017 +11 days 🔍
06/16/2017 +0 days 🔍
06/17/2017 +1 days 🔍
07/25/2017 +38 days 🔍
07/27/2017 +2 days 🔍
12/08/2022 +1960 days 🔍

Sourcesinfo

Product: qemu.org

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

CVE: CVE-2017-9375 (🔍)
GCVE (CVE): GCVE-0-2017-9375
GCVE (VulDB): GCVE-100-102643

OVAL: 🔍

SecurityFocus: 98915 - QEMU 'hw/usb/hcd-xhci.c' Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 06/17/2017 10:58
Updated: 12/08/2022 15:02
Changes: 06/17/2017 10:58 (82), 10/18/2019 20:47 (2), 12/08/2022 15:02 (5)
Complete: 🔍
Cache ID: 216:6A0:103

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