National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2016-8576 Detail

Description

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.

Source:  MITRE      Last Modified:  11/04/2016

Quick Info

CVE Dictionary Entry:
CVE-2016-8576
Original release date:
11/04/2016
Last revised:
01/04/2018
Source:
US-CERT/NIST

Impact

CVSS Severity (version 3.0):
CVSS v3 Base Score:
6.0 Medium
Vector:
CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H (legend)
Impact Score:
4.0
Exploitability Score:
1.5
CVSS Version 3 Metrics:
Attack Vector (AV):
Local
Attack Complexity (AC):
Low
Privileges Required (PR):
High
User Interaction (UI):
None
Scope (S):
Changed
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High
CVSS Severity (version 2.0):
CVSS v2 Base Score:
1.9 LOW
Vector:
(AV:L/AC:M/Au:N/C:N/I:N/A:P) (legend)
Impact Subscore:
2.9
Exploitability Subscore:
3.4
CVSS Version 2 Metrics:
Access Vector:
Locally exploitable
Access Complexity:
Medium
Authentication:
Not required to exploit
Impact Type:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name
http://git.qemu.org/?p=qemu.git;a=commit;h=05f43d44e4bc26611ce25fd7d726e483f73363ce Patch External Source CONFIRM http://git.qemu.org/?p=qemu.git;a=commit;h=05f43d44e4bc26611ce25fd7d726e483f73363ce
http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html External Source SUSE openSUSE-SU-2016:3237
http://www.openwall.com/lists/oss-security/2016/10/10/12 Patch; Third Party Advisory External Source MLIST [oss-security] 20161010 Re: CVE request Qemu: usb: xHCI: infinite loop vulnerability in xhci_ring_fetch
http://www.openwall.com/lists/oss-security/2016/10/10/6 Third Party Advisory External Source MLIST [oss-security] 20161010 CVE request Qemu: usb: xHCI: infinite loop vulnerability in xhci_ring_fetch
http://www.securityfocus.com/bid/93469 Third Party Advisory; VDB Entry External Source BID 93469
https://access.redhat.com/errata/RHSA-2017:2392 External Source REDHAT RHSA-2017:2392
https://access.redhat.com/errata/RHSA-2017:2408 External Source REDHAT RHSA-2017:2408
https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg01265.html Patch External Source MLIST [qemu-devel] 20161007 Re: [PATCH] usb: xHCI: add check to limit command TRB processing
https://security.gentoo.org/glsa/201611-11 External Source GENTOO GLSA-201611-11

Technical Details

Vulnerability Type (View All)

Vulnerable software and versions Switch to CPE 2.2

Configuration 1
OR
cpe:2.3:a:qemu:qemu:-:*:*:*:*:*:*:*

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History 7 change records found - show changes