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Date: 17 Aug 2007 13:21:57 -0000
Subject: SYMSA-2007-007: Palm OS Treo Smartphone Denial of Service

Hash: SHA1

                   Symantec Vulnerability 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]


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.


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.


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 (,
which standardizes names for security problems.


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

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For general information on Symantec's Product Vulnerability
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- - - - ---------------------------------------------------------------

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

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
direct, indirect, or consequential loss or damage arising from use
of, or reliance on, this information.

Symantec, Symantec products, and Symantec Consulting Services are
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