QEMU USB EHCI Emulation resource consumption

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

A vulnerability, which was classified as critical, has been found in QEMU (Virtualization Software) (unknown version). This issue affects an unknown code block of the component USB EHCI Emulation. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. The summary by CVE is:

Quick Emulator (Qemu) built with the USB EHCI Emulation support is vulnerable to a memory leakage issue. It could occur while processing packet data in 'ehci_init_transfer'. A guest user/process could use this issue to leak host memory, resulting in DoS for a host.

The bug was discovered 12/23/2016. The weakness was presented 12/23/2016 by Prasad J Pandit (Website). The advisory is shared at openwall.com. The identification of this vulnerability is CVE-2016-9911 since 12/08/2016. The exploitation is known to be easy. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 96100 (Debian DLA-765-1 : 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 169489 (SUSE Enterprise Linux Security Update for qemu (SUSE-SU-2017:0127-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 days after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (96100). See 94671, 94672, 94674 and 94724 for similar entries.

Productinfo

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Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 96100
Nessus Name: Debian DLA-765-1 : qemu-kvm security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for qemu FEDORA-2017-b953d4d3a4
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

12/07/2016 🔍
12/08/2016 +1 days 🔍
12/23/2016 +15 days 🔍
12/23/2016 +0 days 🔍
12/23/2016 +0 days 🔍
12/24/2016 +1 days 🔍
12/26/2016 +2 days 🔍
12/27/2016 +1 days 🔍
10/12/2022 +2115 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: RHSA-2017:2392
Researcher: Prasad J Pandit
Status: Not defined

CVE: CVE-2016-9911 (🔍)
SecurityFocus: 94762 - QEMU 'ehci_init_transfer()' Function Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 12/24/2016 18:28
Updated: 10/12/2022 16:50
Changes: 12/24/2016 18:28 (66), 07/15/2019 16:17 (12), 10/12/2022 16:50 (3)
Complete: 🔍
Cache ID: 3:AD9:103

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