Avirt SOHO Contains Remote Buffer Overflow Vulnerabilities
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SecurityTracker Alert ID: 1009189
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CVE Reference: CAN-2004-0316
(Links to External Site)
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Updated: Mar 23 2004
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Original Entry Date: Feb 24 2004
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Impact: Denial of service via network, Execution of arbitrary code via network, User access via network
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Exploit Included: Yes
Vendor Confirmed: Yes
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Version(s): 4.3
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Description: Some buffer overflow vulnerabilities were reported in Avirt SOHO. A remote user may be able to cause the SOHO services to crash or potentially execute arbitrary code.
Donato Ferrante reported that a remote user can send a specially crafted request to the target system on TCP port 1080 or 8080 to
trigger a buffer overflow.
Some demonstration exploit requests are provided:
GET aaaa[ 1113 of a ]aaaa
GET %%%%[ 2061 of
% ]%%%% HTTP/1.1
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Impact: A remote user may be able to cause the SOHO services to crash or potentially execute arbitrary code [however, the report did not disclose the specific impact].
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Solution: No solution was available at the time of this entry. The vendor reportedly plans to issue a fix as part of the next version of the product.
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Vendor URL: www.avirt.com/products/soho.html (Links to External Site)
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Cause: Boundary error
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Underlying OS: Windows (Any)
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Reported By: "Donato Ferrante" <fdonato@autistici.org>
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Message History:
None.
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Source Message Contents
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Date: Mon, 23 Feb 2004 09:08:51 -0000
From: "Donato Ferrante" <fdonato@autistici.org>
Subject: Multiple Remote Buffer Overflow in Avirt Soho 4.3
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Donato Ferrante
Application: Avirt Soho
http://www.avirt.com/
Version: 4.3
Bugs: Multiple Remote Buffer Overflow
Author: Donato Ferrante
e-mail: fdonato@autistici.org
web: www.autistici.org/fdonato
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1. Description
2. The bugs
3. The code
4. The fix
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1. Description:
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Vendor's Description:
"Developed for the home or small office, Soho installs in minutes!
Its intuitive wizards and simple interface automate the setup process
and make maintenance a snap. Don't worry if you're new to networking
or Internet sharing - Avirt Soho does all the work!"
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2. The bugs:
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The program doesn't well manage the received strings on the TCP ports:
[1] 1080 and [2] 8080. In fact it will have a buffer overflow.
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3. The code:
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[1]
To test the vulnerability simply send to the server ( port 1080 ) a
string like:
GET aaaa[ 1113 of a ]aaaa
[2]
To test the vulnerability on the web service send to the server
( port 8080 ) a string like:
GET %%%%[ 2061 of % ]%%%% HTTP/1.1
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4. The fix:
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Vendor was contacted.
Bugs will be fixed in the next version of Avirt Soho.
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