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                   Symantec Vulnerability Research
                   http://www.symantec.com/research
                         Security Advisory

   Advisory ID: SYMSA-2007-007
Advisory Title: Palm OS Treo Smartphone Denial of Service
       Authors: J.R. Wikes
  Release Date: 20-08-2007
   Application: N/A
     Platforms: Palm Treo 650, 680, 700p & 755p Smartphones 
      Severity: Remotely exploitable / Denial of Service
 Vendor status: Verified by vendor
    CVE Number: CVE-2007-4213 [Requested]
     Reference: http://www.securityfocus.com/bid/25074


Overview:

Treo Smartphones running the Palm OS are vulnerable to a
remote Denial of Service attack while connected to data
networks allowing inbound ICMP traffic. It is possible for
an attacker to launch this attack from the Internet by sending
specially crafted ICMP requests at the targeted phone's
assigned IP address.

Details:

Sending continuous ICMP echo requests with a packet size of
1470 bytes to the Smartphone's assigned IP address will invoke
one (or more) of the following conditions on the device:
latency, lockup, forced soft reset, or disconnection from
the data network. It is also possible to achieve the same
effects with a lower packet size by increasing the interval
at which the echo requests are sent to the device

Vendor Response:

The Symantec issue outlined is an architectural limitation
and we will continue monitoring it closely. However, we have
not seen any cases where Palm products have been affected.

Recommendation:

In the interim of a fix being released by the Vendor to
address this vulnerability, service providers should implement
network filtering controls to restrict inbound ICMP requests
to these devices.

Common Vulnerabilities and Exposures (CVE) Information:

The Common Vulnerabilities and Exposures (CVE) project has
assigned the following names to these issues.  These are
candidates for inclusion in the CVE list (http://cve.mitre.org),
which standardizes names for security problems.

CVE-2007-4213

- - - --------Symantec Vulnerability Research Advisory Information-------

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- - - --------------Symantec Product Advisory Information-------------

To Report a Security Vulnerability in a Symantec Product:
secure@symantec.com

For general information on Symantec's Product Vulnerability
reporting and response:
http://www.symantec.com/security/

Symantec Product Advisory Archive:
http://www.symantec.com/avcenter/security/SymantecAdvisories.html

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http://www.symantec.com/security/Symantec-Vulnerability-Management-Key.asc

- - - - ---------------------------------------------------------------

Copyright (c) 2007 by Symantec Corp.
Permission to redistribute this alert electronically is granted
as long as it is not edited in any way unless authorized by
Symantec Vulnerability Research. Reprinting the whole or part of
this alert in any medium other than electronically requires
permission from research@symantec.com.

Disclaimer
The information in the advisory is believed to be accurate at the
time of publishing based on currently available information. Use
of the information constitutes acceptance for use in an AS IS
condition. There are no warranties with regard to this information.
Neither the author nor the publisher accepts any liability for any
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