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

This script is Copyright (C) 2016 Tenable Network Security, Inc.


Synopsis :

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

Description :

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.

See also :

http://www.openwall.com/lists/oss-security/2015/09/18/5
http://www.nessus.org/u?3c57438d
http://www.nessus.org/u?250c754b
http://www.nessus.org/u?27df9ffc

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P)

Family: FreeBSD Local Security Checks

Nessus Plugin ID: 87692 ()

Bugtraq ID:

CVE ID: CVE-2015-7295

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