QEMU hw/usb/hcd-xhci.c xhci_kick_epctx resource management

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

A vulnerability, which was classified as problematic, has been found in QEMU (Virtualization Software) (affected version unknown). Affected by this issue is the function xhci_kick_epctx of the file hw/usb/hcd-xhci.c. The manipulation with an unknown input leads to a resource management vulnerability. Using CWE to declare the problem leads to CWE-399. Impacted is availability. CVE summarizes:

The xhci_kick_epctx function in hw/usb/hcd-xhci.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (infinite loop and QEMU process crash) via vectors related to control transfer descriptor sequence.

The bug was discovered 03/07/2017. The weakness was disclosed 03/27/2017 by Li Qiang with 360.cn Inc. (oss-sec). The advisory is available at openwall.com. This vulnerability is handled as CVE-2017-5973 since 02/13/2017. The exploitation is known to be easy. Local access is required to approach this attack. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 97439 (Debian DLA-842-1 : qemu-kvm 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 169803 (SUSE Enterprise Linux Security Update for xen (SUSE-SU-2017:0647-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.qemu-project.org. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (97439). The entries 98151, 98123, 98148 and 98201 are pretty similar.

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: Resource management
CWE: CWE-399 / CWE-404
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: 97439
Nessus Name: Debian DLA-842-1 : qemu-kvm security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841810
OpenVAS Name: Ubuntu Update for qemu USN-3261-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: f89b60f6e5fee3923bedf80e82b4e5efc1bb156b

Timelineinfo

02/13/2017 🔍
02/14/2017 +1 days 🔍
02/28/2017 +14 days 🔍
03/01/2017 +1 days 🔍
03/07/2017 +6 days 🔍
03/27/2017 +20 days 🔍
03/27/2017 +0 days 🔍
03/28/2017 +1 days 🔍
11/22/2022 +2065 days 🔍

Sourcesinfo

Product: qemu.org

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

CVE: CVE-2017-5973 (🔍)
SecurityFocus: 96220 - QEMU 'hw/usb/hcd-xhci.c' Denial of Service Vulnerability
OSVDB: - CVE-2017-5973 - QEMU - Denial of Service Issue

See also: 🔍

Entryinfo

Created: 03/28/2017 22:23
Updated: 11/22/2022 18:50
Changes: 03/28/2017 22:23 (78), 08/23/2020 14:22 (3), 11/22/2022 18:50 (5)
Complete: 🔍

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