Published:
08 April 2008
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AUSCERT External Security Bulletin Redistribution
ESB-2008.0068 -- [Appliance]
Vulnerability in UPnP
8 April 2008
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AusCERT Security Bulletin Summary
---------------------------------
Product: UPnP
Publisher: US-CERT
Impact: Execute Arbitrary Code/Commands
Modify Arbitrary Files
Inappropriate Access
Access: Remote/Unauthenticated
CVE Names: CVE-2008-1654
Revision History: April 8 2008: Added CVE information
January 18 2008: Initial Release
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Vulnerability Note VU#347812
UPnP enabled by default in multiple devices
Overview
Multiple vendors ship devices with UPnP enabled by default. By
convincing a user to open a malicious URL, an attacker may be able
to remotely control or configure UPnP enabled devices.
I. Description
Universal Plug and Play (UPnP) is a collection of protocols
maintained and distributed by the UPnP Forum. UPnP is designed to
allow network devices to easily connect to each other. UPnP enabled
applications may be able to control other UPnP enabled devices such
as firewalls or routers automatically and without authentication.
Some applications may rely on UPnP to automatically open ports on
routers or automatically set other parameters on compatible devices.
Multiple vendors ship devices with UPnP enabled by default. These
devices may be configured to only listen for UPnP requests on local
networks or wireless interfaces. By using browser plugins that
execute in the context of the local system, an attacker may be able
to send UPnP messages to local devices without authentication. One
researcher has demonstrated an attack vector that uses the Adobe
Flash plugin.
Note that to successfully exploit this vulnerability an attacker
would need to be able to guess the IP address of an affected device.
This IP address may also be enumerated through browser headers or
other methods.
II. Impact
By convincing a victim to click on a link in an HTML document (web
page, HTML email), an attacker could issue any command or change any
configuration that can be set via UPnP on an affected device. If the
affected device is providing routing or firewalling services to
clients, an attacker may be able to change firewall and port
forwarding rules, modify DNS settings, change wireless encryption
keys, or set arbitrary administration passwords.
III. Solution
We are currently unaware of a practical solution to this problem.
Workarounds for administrators
* UPnP should be disabled on devices that are being use to enforce
security policies or are connected to untrusted networks, such as
the Internet.
* Filtering the IGMP protocol between LAN segments may prevent UPnP
devices from connecting to networks that they are not authorized to
access.
Workarounds for users
* Disabling UPnP on network devices will mitigate this vulnerability.
Note that disabling UPnP will cause any devices or applications
that rely on UPnP to fail or operate with reduced functionality.
* Disabling UPnP in desktop operating systems may prevent an attacker
from exploiting this vulnerability. Microsoft Windows XP users
should see the workarounds section of Microsoft Security Bulletin
MS07-019 for instructions on how to disable UPnP.
* Using the Mozilla Firefox NoScript extension to whitelist web sites
that can run scripts and access installed plugins may prevent this
vulnerability from being exploited.
* Using host-based firewalls to filter ports 1900/udp and 2869/tcp
both inbound and outbound may prevent this vulnerability from being
exploited by blocking the ports that UPnP uses. Note that the
Windows Vista firewall blocks UPnP by default. This workaround may
not be able to prevent exploitation of this vulnerability.
Systems Affected
Vendor Status Date Updated
3com, Inc. Unknown 15-Jan-2008
Alcatel Unknown 15-Jan-2008
Apple Computer, Inc. Unknown 15-Jan-2008
AT&T Unknown 15-Jan-2008
Avaya, Inc. Unknown 15-Jan-2008
Avici Systems, Inc. Unknown 15-Jan-2008
Borderware Technologies Unknown 15-Jan-2008
Bro Unknown 15-Jan-2008
CentOS Unknown 15-Jan-2008
Charlotte's Web Networks Unknown 15-Jan-2008
Check Point Software Technologies Unknown 15-Jan-2008
Cisco Systems, Inc. Unknown 15-Jan-2008
Clavister Unknown 15-Jan-2008
Computer Associates Unknown 15-Jan-2008
Computer Associates eTrust Security Management Unknown 15-Jan-2008
Conectiva Inc. Unknown 15-Jan-2008
Cray Inc. Unknown 15-Jan-2008
D-Link Systems, Inc. Unknown 15-Jan-2008
Data Connection, Ltd. Unknown 15-Jan-2008
Debian GNU/Linux Unknown 15-Jan-2008
EMC Corporation Unknown 15-Jan-2008
Engarde Secure Linux Unknown 15-Jan-2008
Enterasys Networks Unknown 15-Jan-2008
Ericsson Unknown 15-Jan-2008
eSoft, Inc. Unknown 15-Jan-2008
Extreme Networks Unknown 15-Jan-2008
F5 Networks, Inc. Unknown 15-Jan-2008
Fedora Project Unknown 15-Jan-2008
Force10 Networks, Inc. Unknown 15-Jan-2008
Fortinet, Inc. Unknown 15-Jan-2008
Foundry Networks, Inc. Unknown 15-Jan-2008
FreeBSD, Inc. Unknown 15-Jan-2008
Fujitsu Unknown 15-Jan-2008
Gentoo Linux Unknown 15-Jan-2008
Global Technology Associates Unknown 15-Jan-2008
Hewlett-Packard Company Unknown 15-Jan-2008
Hitachi Unknown 15-Jan-2008
Hyperchip Unknown 15-Jan-2008
IBM Corporation Unknown 15-Jan-2008
IBM Corporation (zseries) Unknown 15-Jan-2008
IBM eServer Unknown 15-Jan-2008
Ingrian Networks, Inc. Unknown 15-Jan-2008
Intel Corporation Unknown 15-Jan-2008
Internet Security Systems, Inc. Unknown 15-Jan-2008
Intoto Unknown 15-Jan-2008
IP Filter Unknown 15-Jan-2008
Juniper Networks, Inc. Unknown 15-Jan-2008
Linksys (A division of Cisco Systems) Unknown 15-Jan-2008
Lucent Technologies Unknown 15-Jan-2008
Luminous Networks Unknown 15-Jan-2008
m0n0wall Unknown 15-Jan-2008
Mandriva, Inc. Unknown 15-Jan-2008
McAfee Unknown 15-Jan-2008
Microsoft Corporation Unknown 15-Jan-2008
MontaVista Software, Inc. Unknown 15-Jan-2008
Multinet (owned Process Software Corporation) Unknown 15-Jan-2008
Multitech, Inc. Unknown 15-Jan-2008
NEC Corporation Unknown 15-Jan-2008
NetBSD Unknown 15-Jan-2008
netfilter Unknown 15-Jan-2008
Netgear, Inc. Unknown 15-Jan-2008
Network Appliance, Inc. Unknown 15-Jan-2008
NextHop Technologies, Inc. Unknown 15-Jan-2008
Nokia Unknown 15-Jan-2008
Nortel Networks, Inc. Unknown 15-Jan-2008
Novell, Inc. Unknown 15-Jan-2008
OpenBSD Unknown 15-Jan-2008
Openwall GNU/*/Linux Unknown 16-Jan-2008
QNX, Software Systems, Inc. Unknown 15-Jan-2008
RadWare, Inc. Unknown 15-Jan-2008
Red Hat, Inc. Unknown 15-Jan-2008
Redback Networks, Inc. Unknown 15-Jan-2008
Riverstone Networks, Inc. Unknown 15-Jan-2008
Secure Computing Network Security Division Unknown 15-Jan-2008
Secureworx, Inc. Unknown 15-Jan-2008
Silicon Graphics, Inc. Unknown 15-Jan-2008
Slackware Linux Inc. Unknown 15-Jan-2008
SmoothWall Unknown 15-Jan-2008
Snort Unknown 15-Jan-2008
Sony Corporation Unknown 15-Jan-2008
Sourcefire Unknown 15-Jan-2008
Stonesoft Unknown 15-Jan-2008
Sun Microsystems, Inc. Unknown 15-Jan-2008
SUSE Linux Unknown 15-Jan-2008
Symantec, Inc. Unknown 15-Jan-2008
The SCO Group Unknown 15-Jan-2008
TippingPoint, Technologies, Inc. Not Vulnerable 16-Jan-2008
Trustix Secure Linux Unknown 15-Jan-2008
Turbolinux Unknown 15-Jan-2008
Ubuntu Unknown 15-Jan-2008
Unisys Unknown 15-Jan-2008
Watchguard Technologies, Inc. Unknown 15-Jan-2008
Wind River Systems, Inc. Unknown 15-Jan-2008
ZyXEL Unknown 15-Jan-2008
References
http://www.upnp.org/
http://www.upnp.org/download/UPnP_Vendor_Implementation_Guide_Jan2001.htm
http://www.upnp.org/membership/members.asp
http://www.gnucitizen.org/blog/hacking-the-interwebs
http://windowshelp.microsoft.com/Windows/en-US/Help/32f3845b-eda0-4168-be8d-90f07250d8101033.mspx
http://www.microsoft.com/technet/security/Bulletin/MS07-019.mspx
http://www.us-cert.gov/reading_room/securing_browser/
http://noscript.net/features#contentblocking
http://linux-igd.sourceforge.net/
http://www.shorewall.net/UPnP.html
Credit
Information about this vulnerability was released by PDP on the GNUCITIZEN website.
This document was written by Ryan Giobbi.
Other Information
Date Public 01/15/2008
Date First Published 01/15/2008 01:47:51 PM
Date Last Updated 01/16/2008
CERT Advisory
CVE Name
Metric 9.83
Document Revision 52
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