FreeBSD : qemu -- denial of service vulnerability in virtio-net support (42cbd1e8-b152-11e5-9728-002590263bf5)

Medium Nessus Plugin ID 87692


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 Virtual Network Device(virtio-net) support is vulnerable to a DoS issue. It could occur while receiving large packets over the tuntap/macvtap interfaces and when guest's virtio-net driver did not support big/mergeable receive buffers.

An attacker on the local network could use this flaw to disable guest's networking by sending a large number of jumbo frames to the guest, exhausting all receive buffers and thus leading to a DoS situation.


Update the affected packages.

See Also

Plugin Details

Severity: Medium

ID: 87692

File Name: freebsd_pkg_42cbd1e8b15211e59728002590263bf5.nasl

Version: $Revision: 2.1 $

Type: local

Published: 2016/01/04

Modified: 2016/01/04

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 5

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

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: 2016/01/02

Vulnerability Publication Date: 2015/09/18

Reference Information

CVE: CVE-2015-7295