Corsaire Security Advisory - Netopia Timbuktu remote buffer overflow issue

– Corsaire Security Advisory –

Title: Netopia Timbuktu remote buffer overflow issue
Date: 20.07.04
Application: Timbuktu v7.0.3
Environment: Mac OS X (10.1, 10.2, 10.3)
Author: Stephen de Vries [[email protected]]
Audience: General release
Reference: c040720-001

– Scope –

The aim of this document is to define a vulnerability in the Timbuktu
product for Mac OS X, as supplied by Netopia [1], that allows a remote
attacker to crash the application and effectively deny service to
legitimate users.

– History –

Discovered: 20.07.04
Vendor notified: 27.08.04
Document released: 19.11.04

– Overview –

The Timbuktu software is shipped as a client/server application that
allows remote users to access the desktop of a host system. The server
component of this application is vulnerable to a remote buffer overflow
vulnerability that, when exploited, causes the server process to crash.

– Analysis –

The server process runs with root privileges on the host Mac OS X and
listens for client connections on TCP port 407. By making a number of
concurrent connections to this port and repeatedly sending a particular
string of data, a memory buffer is overwritten and the server process
crashes.

– Recommendations –

Upgrade to version v7.0.4 of the Timbuktu application.

– CVE –

The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CAN-2004-0810 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org), which standardises names for
security problems.

– References –

[1] http://www.netopia.com

– Revision –

a. Initial release.
b. Minor detail revision.

– Distribution –

This security advisory may be freely distributed, provided that it
remains unaltered and in its original form.

– Disclaimer –

The information contained within this advisory is supplied "as-is" with
no warranties or guarantees of fitness of use or otherwise. Corsaire
accepts no responsibility for any damage caused by the use or misuse of
this information.

– About Corsaire –

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in Guildford, Surrey, UK. Corsaire bring innovation, integrity and
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