National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2016-2391 Detail

Current Description

The ohci_bus_start function in the USB OHCI emulation support (hw/usb/hcd-ohci.c) in QEMU allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) via vectors related to multiple eof_timers.

Source:  MITRE
View Analysis Description

Evaluator Description

CWE-476: NULL Pointer Dereference

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 5.0 MEDIUM
Vector: AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H (V3.0 legend)
Impact Score: 3.6
Exploitability Score: 1.3


Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 2.1 LOW
Vector: (AV:L/AC:L/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 3.9


Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://git.qemu.org/?p=qemu.git;a=commit;h=fa1298c2d623522eda7b4f1f721fcb935abb7360 Vendor Advisory
http://www.openwall.com/lists/oss-security/2016/02/16/2
http://www.securityfocus.com/bid/83263
http://www.ubuntu.com/usn/USN-2974-1
https://bugzilla.redhat.com/show_bug.cgi?id=1304794
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
https://lists.gnu.org/archive/html/qemu-devel/2016-02/msg03374.html Vendor Advisory

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:qemu:qemu:-:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 2 ( hide )
 cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
     Show Matching CPE(s)


Change History

4 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-2391
NVD Published Date:
06/16/2016
NVD Last Modified:
12/01/2018