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Overview:



On September 13, ISS advised WatchGuard of three suspected

vulnerabilities in older versions (prior to 2.2) of software  running

on WatchGuard's SOHO Firebox product. They later reported a fourth

vulnerability.  The vulnerabilities are:



1. Inappropriately accessing configuration files using the HTTP

configuration server (affects releases prior to 2.1.3)



2. A possible buffer overflow - arbitrary code might be executed

by applying an excessively long HTTP GET request (affects releases

prior to 2.1.3)



3. DoS could be induced by flooding the SOHO with fragmented

packets (affects release 1.6.0 and previous)



4. SOHO password can be reset using a POST operation without

authentication (affects releases prior to 2.2.0)



All the items were addressed in previous releases of the software and

are no longer issues.



The currently shipping version of the SOHO software is 2.2.1. Current

LiveSecurity subscribers are automatically sent new versions of

software as the software becomes available. In addition, the most

current version of the software is always posted on our Web site. All

LiveSecurity subscribers should be running the most current version of

the software to maintain the highest level of protection.



Analysis:



1. Inappropriate Access via HTTP Vulnerability.



ISS found the SOHO responded to HTTP requests (such as

192.168.111.1/secret.dat to access the file secret.dat).



The SOHO only honors HTTP requests from inside the trusted LAN

network. Outsiders could not exploit this vulnerability.



This vulnerability was verified and corrected in Release 2.1.3.

Release 2.1.3 was broadcast to all current subscribers in

mid-September and has been available on our Web site since then.



2. Applying Long HTTP GET Requests.



The way memory is architected in the SOHO, we do not believe that this

exploit could be used to run arbitrary code. We believe that the

potential damage caused by this attack would be a Denial of Service by

crashing the administration server, requiring a reboot.



Again, this vulnerability could only be exploited inside the trusted

LAN.



This vulnerability was verified and corrected in Release 2.1.3.

Release 2.1.3 was broadcast to all current subscribers in

mid-September and has been available on our Web site since then.



3. DoS from Flooding a SOHO with Fragmented Packets.



We were able to reproduce this problem with version 1.6.0. 1.6.0

stopped shipping in early August. The issue does not exist in any 2.x

release.



All LiveSecurity subscribers would have updated their SOHOs to a 2.x

release long before this vulnerability was reported.



4. SOHO Password Reset Using a POST Operation without

Authentication.



The SOHO only honors HTTP requests from inside the trusted LAN

network. Outsiders could not exploit this vulnerability.



This vulnerability was verified and corrected in Release 2.2. Release

2.2 was broadcast to all current subscribers in mid-November and has

been available on our Web site since then.



To reiterate, all the items were addressed in previous releases of the

software and are no longer issues.



The currently shipping version of the SOHO software is 2.2.1. Current

LiveSecurity subscribers are automatically sent new versions of

software as the software becomes available. In addition, the most

current version of the software is always posted on our Web site. All

LiveSecurity subscribers should be running the most current version of

the software to maintain the highest level of protection.





Sincerely,



Steve Fallin

Director, Rapid Response Team

WatchGuard Technologies, Inc.

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