CVE-2016-7466
QEMU USB xHCI MSIX DoS
Description
Memory leak in the usb_xhci_exit function in hw/usb/hcd-xhci.c in QEMU (aka Quick Emulator), when the xhci uses msix, allows local guest OS administrators to cause a denial of service (memory consumption and possibly QEMU process crash) by repeatedly unplugging a USB device.
INFO
Published Date :
Dec. 10, 2016, 12:59 a.m.
Last Modified :
Feb. 12, 2023, 11:25 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
4.0
Exploitability Score :
1.5
Affected Products
The following products are affected by CVE-2016-7466
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2016-7466.
| URL | Resource |
|---|---|
| http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=b53dd4495ced2432a0b652ea895e651d07336f7e | |
| http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html | Mailing List Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2016/09/19/8 | Mailing List Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2016/09/20/3 | Mailing List Third Party Advisory |
| http://www.securityfocus.com/bid/93029 | Third Party Advisory VDB Entry |
| https://access.redhat.com/errata/RHSA-2017:2392 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2017:2408 | Third Party Advisory |
| https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg02773.html | Patch Third Party Advisory |
| https://security.gentoo.org/glsa/201611-11 | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2016-7466 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2016-7466 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Feb. 12, 2023
Action Type Old Value New Value Changed Description A memory-leak flaw was found in the Quick Emulator(QEMU) built with USB xHCI controller emulation support. The flaw could occur while doing a USB-device unplug operation. Unplugging the device repeatedly resulted in leaking host memory, which affected other services on the host. A privileged user inside the guest could exploit this flaw to cause a denial of service on the host or potentially crash the host's QEMU process instance. Memory leak in the usb_xhci_exit function in hw/usb/hcd-xhci.c in QEMU (aka Quick Emulator), when the xhci uses msix, allows local guest OS administrators to cause a denial of service (memory consumption and possibly QEMU process crash) by repeatedly unplugging a USB device. Removed CVSS V2 Red Hat, Inc. (AV:A/AC:M/Au:S/C:N/I:N/A:P) Removed CVSS V3 Red Hat, Inc. AV:A/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:L Removed Reference https://access.redhat.com/security/cve/CVE-2016-7466 [No Types Assigned] Removed Reference https://bugzilla.redhat.com/show_bug.cgi?id=1377837 [No Types Assigned] -
CVE Modified by [email protected]
Feb. 02, 2023
Action Type Old Value New Value Changed Description Memory leak in the usb_xhci_exit function in hw/usb/hcd-xhci.c in QEMU (aka Quick Emulator), when the xhci uses msix, allows local guest OS administrators to cause a denial of service (memory consumption and possibly QEMU process crash) by repeatedly unplugging a USB device. A memory-leak flaw was found in the Quick Emulator(QEMU) built with USB xHCI controller emulation support. The flaw could occur while doing a USB-device unplug operation. Unplugging the device repeatedly resulted in leaking host memory, which affected other services on the host. A privileged user inside the guest could exploit this flaw to cause a denial of service on the host or potentially crash the host's QEMU process instance. Added CVSS V2 Red Hat, Inc. (AV:A/AC:M/Au:S/C:N/I:N/A:P) Added CVSS V3 Red Hat, Inc. AV:A/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:L Removed Reference http://git.qemu.org/?p=qemu.git;a=commit;h=b53dd4495ced2432a0b652ea895e651d07336f7e [Patch, Vendor Advisory] Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=1377837 [No Types Assigned] Added Reference http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=b53dd4495ced2432a0b652ea895e651d07336f7e [No Types Assigned] Added Reference https://access.redhat.com/security/cve/CVE-2016-7466 [No Types Assigned] -
CPE Deprecation Remap by [email protected]
Aug. 04, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:redhat:openstack:9.0:*:*:*:*:*:*:* OR *cpe:2.3:a:redhat:openstack:9:*:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
Aug. 04, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:redhat:openstack:11.0:*:*:*:*:*:*:* OR *cpe:2.3:a:redhat:openstack:11:*:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
Aug. 04, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:redhat:openstack:8.0:*:*:*:*:*:*:* OR *cpe:2.3:a:redhat:openstack:8:*:*:*:*:*:*:* -
Modified Analysis by [email protected]
Oct. 15, 2020
Action Type Old Value New Value Removed CVSS V2 NIST (AV:L/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V2 NIST (AV:L/AC:M/Au:N/C:N/I:N/A:P) Removed CVSS V3 NIST AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H Added CVSS V3.1 NIST AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H Changed Reference Type http://git.qemu.org/?p=qemu.git;a=commit;h=b53dd4495ced2432a0b652ea895e651d07336f7e Issue Tracking, Patch http://git.qemu.org/?p=qemu.git;a=commit;h=b53dd4495ced2432a0b652ea895e651d07336f7e Patch, Vendor Advisory Changed Reference Type http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html No Types Assigned http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html Mailing List, Third Party Advisory Changed Reference Type https://access.redhat.com/errata/RHSA-2017:2392 No Types Assigned https://access.redhat.com/errata/RHSA-2017:2392 Third Party Advisory Changed Reference Type https://access.redhat.com/errata/RHSA-2017:2408 No Types Assigned https://access.redhat.com/errata/RHSA-2017:2408 Third Party Advisory Changed Reference Type https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg02773.html Patch, Vendor Advisory https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg02773.html Patch, Third Party Advisory Changed Reference Type https://security.gentoo.org/glsa/201611-11 No Types Assigned https://security.gentoo.org/glsa/201611-11 Third Party Advisory Removed CWE NIST CWE-399 Added CWE NIST CWE-772 Changed CPE Configuration OR *cpe:2.3:a:qemu:qemu:-:*:*:*:*:*:*:* OR *cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* versions up to (including) 2.7.1 Added CPE Configuration OR *cpe:2.3:o:opensuse:leap:42.2:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:a:redhat:openstack:6.0:*:*:*:*:*:*:* *cpe:2.3:a:redhat:openstack:7.0:*:*:*:*:*:*:* *cpe:2.3:a:redhat:openstack:8.0:*:*:*:*:*:*:* *cpe:2.3:a:redhat:openstack:9.0:*:*:*:*:*:*:* *cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:* *cpe:2.3:a:redhat:openstack:11.0:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:* OR cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jan. 05, 2018
Action Type Old Value New Value Added Reference https://access.redhat.com/errata/RHSA-2017:2408 [No Types Assigned] Added Reference https://access.redhat.com/errata/RHSA-2017:2392 [No Types Assigned] -
CVE Modified by [email protected]
Jul. 01, 2017
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/201611-11 [No Types Assigned] -
CVE Modified by [email protected]
Jan. 07, 2017
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html [No Types Assigned] -
Initial Analysis by [email protected]
Dec. 12, 2016
Action Type Old Value New Value Added CPE Configuration Configuration 1 OR *cpe:2.3:a:qemu:qemu:-:*:*:*:*:*:*:* Added CVSS V2 (AV:L/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3 AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H Changed Reference Type http://git.qemu.org/?p=qemu.git;a=commit;h=b53dd4495ced2432a0b652ea895e651d07336f7e No Types Assigned http://git.qemu.org/?p=qemu.git;a=commit;h=b53dd4495ced2432a0b652ea895e651d07336f7e Issue Tracking, Patch Changed Reference Type https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg02773.html No Types Assigned https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg02773.html Vendor Advisory, Patch Changed Reference Type http://www.securityfocus.com/bid/93029 No Types Assigned http://www.securityfocus.com/bid/93029 Third Party Advisory, VDB Entry Changed Reference Type http://www.openwall.com/lists/oss-security/2016/09/20/3 No Types Assigned http://www.openwall.com/lists/oss-security/2016/09/20/3 Third Party Advisory, Mailing List Changed Reference Type http://www.openwall.com/lists/oss-security/2016/09/19/8 No Types Assigned http://www.openwall.com/lists/oss-security/2016/09/19/8 Third Party Advisory, Mailing List Added CWE CWE-399
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2016-7466 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2016-7466
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.00%
score
0.24592
percentile