FreeBSD : qemu -- buffer overflow vulnerability in VNC (2b3b4c27-b0c7-11e5-8d13-bc5ff45d0f28)

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 VNC display driver support is vulnerable
to a buffer overflow flaw leading to a heap memory corruption issue.
It could occur while refreshing the server display surface via routine
vnc_refresh_server_surface().

A privileged guest user could use this flaw to corrupt the heap memory
and crash the Qemu process instance OR potentially use it to execute
arbitrary code on the host.

See also :

http://www.openwall.com/lists/oss-security/2015/08/21/6
http://www.nessus.org/u?45afb030
http://www.nessus.org/u?b80f3c79
http://www.nessus.org/u?6a90ddfd

Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 7.2
(CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C)

Family: FreeBSD Local Security Checks

Nessus Plugin ID: 87689 ()

Bugtraq ID:

CVE ID: CVE-2015-5225

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