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AUSCERT External Security Bulletin Redistribution
ESB-2009.1528.3
Security Vulnerability in VirtualBox Guest Additions May
Lead to Denial of Service against the Virtual Machine
17 November 2009
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AusCERT Security Bulletin Summary
---------------------------------
Product: Sun xVM VirtualBox 1.6
Sun xVM VirtualBox 2.0
Sun xVM VirtualBox 2.1
Sun xVM VirtualBox 2.2
Sun VirtualBox 3.0
Publisher: Sun Microsystems
Operating System: Linux variants
Windows
Solaris
Impact/Access: Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2009-3940
Original Bulletin:
http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-271149-1
Revision History: November 17 2009: Added CVE reference
November 17 2009: Product title modified
November 16 2009: Initial Release
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Security Vulnerability in VirtualBox Guest Additions May Lead to Denial of
Service against the Virtual Machine
Category : Security
Release Phase : Resolved
Bug Id : 6889615
Product :
Sun xVM VirtualBox 1.6
Sun xVM VirtualBox 2.0
Sun xVM VirtualBox 2.1
Sun xVM VirtualBox 2.2
Sun VirtualBox 3.0
Date of Resolved Release : 13-Nov-2009
A security vulnerability in the optional Sun VirtualBox Guest Additions ...
1. Impact
A security vulnerability in the optional Sun VirtualBox Guest Additions may
allow local unprivileged users to exhaust the kernel memory of the guest
operating system, leading to a Denial of Service against the guest operating
system running in a virtual machine. Since the Guest Additions are installed
in the guest operating system only, this vulnerability is limited to local
users of the guest operating system running in a virtual machine where the
Guest Additions have been installed. The host operating system is not affected.
Sun would like to acknowledge with thanks, Thomas Biege of SUSE Linuxfor
bringing this issue to our attention.
2. Contributing Factors
This issue can occur in the following releases:
* all Sun xVM VirtualBox Guest Additions 1.6 releases
* Sun xVM VirtualBox Guest Additions 2.0.0, 2.0.2, 2.0.4, 2.0.6, 2.0.8,
2.0.10
* all Sun xVM VirtualBox Guest Additions 2.1 releases
* all Sun xVM VirtualBox Guest Additions 2.2 releases
* Sun VirtualBox Additions 3.0.0, 3.0.2, 3.0.4, 3.0.6 and 3.0.8
VirtualBox Guest Additions are available for Linux, Windows and Solaris.
They are shipped as an ISO9660 image with the VirtualBox product and are also
available for download separately.
Notes:
1. Sun VirtualBox is not shipped for the Solaris SPARC Platform.
2. Virtual machines without Guest Additions are not affected.
To determine the version of Guest Additions you have installed in a particular
virtual machine, use the following command on the host (replace VMNAME with
the actual virtual machine name):
$ VBoxManage --nologo guestproperty get VMNAME /VirtualBox/GuestAdd/Version
The output looks like the following:
Value: 3.0.8
If the output is:
No value set!
The above means that there is either an older release of the Guest Additions
installed or no Guest Additions are installed. In this case update the Guest
Additions, to be on the safe side. This version check works for virtual
machines in any state, running or not.
On Windows hosts you may need to specify the full path to the
VBoxManage executable, e.g.
C:\> "C:\Program Files\Sun\VirtualBox\VBoxManage.exe" ...
3. Symptoms
There are no predictable symptoms to indicate that this issue has been
exploited.
4. Workaround
There is no workaround for this issue. Please see the "Resolution" section
below.
5. Resolution
This issue is addressed in the following release:
* Sun xVM VirtualBox 2.0.12 (for all platforms)
* Sun VirtualBox 3.0.10 (for all platforms)
Users of Sun xVM VirtualBox 1.6 releases should update to either Sun xVM
VirtualBox 2.0.12 or Sun VirtualBox 3.0.10, both for the applications running
on the host and for the Guest Additions.
Users of Sun xVM VirtualBox 2.1 and 2.2 releases should to update to Sun
VirtualBox 3.0.10, both for the applications running on the host and for the
Guest Additions.
Sun VirtualBox 3.0.10 can be downloaded from the following site:
http://download.virtualbox.org/virtualbox/vboxdownload.html
Sun VirtualBox 2.0.12 can be downloaded from the following site:
http://www.virtualbox.org/wiki/Download_Old_Builds_2_0
Refer to the user manual if you are unsure how to install or update Guest
Additions.
Installing the updated VirtualBox package on the host system does not change
the installed release of the Guest Additions in the virtual machines.
This Sun Alert notification is being provided to you on an "AS IS"
basis. This Sun Alert notification may contain information provided by
third parties. The issues described in this Sun Alert notification may
or may not impact your system(s). Sun makes no representations,
warranties, or guarantees as to the information contained herein. ANY
AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
NON-INFRINGEMENT, ARE HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT
YOU ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE
OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN.
This Sun Alert notification contains Sun proprietary and confidential
information. It is being provided to you pursuant to the provisions of
your agreement to purchase services from Sun, or, if you do not have
such an agreement, the Sun.com Terms of Use. This Sun Alert
notification may only be used for the purposes contemplated by these
agreements.
Copyright 2000-2009 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved
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