SYMSA-2007-007: Palm OS Treo Smartphone Denial of Service

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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:

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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

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

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Received on Mon Aug 20 15:37:56 2007

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