Corsaire Security Advisory - Netopia Timbuktu remote buffer overflow issue

From: advisories (
Date: 11/19/04

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    Date: Fri, 19 Nov 2004 17:50:49 -0000

    -- 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 []
    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

    -- 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 (, which standardises names for
    security problems.

    -- References --


    -- 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 --

    Corsaire are a leading information security consultancy, founded in 1997
    in Guildford, Surrey, UK. Corsaire bring innovation, integrity and
    analytical rigour to every job, which means fast and dramatic security
    performance improvements. Our services centre on the delivery of
    information security planning, assessment, implementation, management
    and vulnerability research.

    A free guide to selecting a security assessment supplier is available at

    Copyright 2004 Corsaire Limited. All rights reserved.

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