FreeBSD : qemu -- denial of service vulnerability in USB EHCI emulation support (60cb2055-b1b8-11e5-9728-002590263bf5)

Medium Nessus Plugin ID 87694


The remote FreeBSD host is missing one or more security-related updates.


Prasad J Pandit, Red Hat Product Security Team, reports :

Qemu emulator built with the USB EHCI emulation support is vulnerable to an infinite loop issue. It occurs during communication between host controller interface(EHCI) and a respective device driver. These two communicate via a isochronous transfer descriptor list(iTD) and an infinite loop unfolds if there is a closed loop in this list.

A privileges user inside guest could use this flaw to consume excessive CPU cycles & resources on the host.


Update the affected packages.

See Also

Plugin Details

Severity: Medium

ID: 87694

File Name: freebsd_pkg_60cb2055b1b811e59728002590263bf5.nasl

Version: $Revision: 2.4 $

Type: local

Published: 2016/01/04

Modified: 2016/10/19

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 4.9

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C


Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:qemu, p-cpe:/a:freebsd:freebsd:qemu-devel, p-cpe:/a:freebsd:freebsd:qemu-sbruno, p-cpe:/a:freebsd:freebsd:qemu-user-static, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Patch Publication Date: 2016/01/03

Vulnerability Publication Date: 2015/12/14

Reference Information

CVE: CVE-2015-8558