Motorola/Netopia Timbuktu Buffer Overflows Let Remote Users Execute Arbitrary Code and Directory Traversal Bug Lets Remote Users Create/Delete Arbitrary Messages
SecurityTracker Alert ID: 1018614|
SecurityTracker URL: http://securitytracker.com/id/1018614
(Links to External Site)
Date: Aug 28 2007
Execution of arbitrary code via network, Modification of system information, Modification of user information, User access via network|
Fix Available: Yes Vendor Confirmed: Yes |
Version(s): prior to 8.6.5|
Some vulnerabilities were reported in Timbuktu. A remote user can execute arbitrary code on the target system. A remote user can create or delete arbitrary files.|
A remote user can send specially crafted data to trigger a buffer overflow and execute arbitrary code on the target system. The code will run with System privileges.
Application protocol requests, login requests, and Scanner responses can be used to exploit this vulnerability.
A remote user can send 'Send' requests with specially crafted directory traversal characters (e.g., "../../../") to create or delete files with System privileges.
The vendor was notified of the directory traversal vulnerability on May 15, 2007 and of the buffer overflows on July 18, 2007.
Titon of BastardLabs and two other researchers reported these vulnerabilities via iDefense.
A remote user can execute arbitrary code on the target system.|
A remote user can create or delete arbitrary files on the target system.
The vendor has issued a fixed version (8.6.5).|
The vendor advisory is available at:
Vendor URL: netopia.com/software/products/tb2/ (Links to External Site)
Boundary error, Input validation error|
|Underlying OS: Windows (Any)|
Source Message Contents
Subject: iDefense Security Advisory 08.27.07: Motorola Timbuktu Multiple Buffer|
Motorola Timbuktu Multiple Buffer Overflow Vulnerabilities
iDefense Security Advisory 08.27.07
Aug 27, 2007
Motorola Inc.'s Timbuktu Pro is a remote control software which allows
remote access to a computer's desktop. It is available for Mac OS X and
Windows systems and provides integration with Skype and SSH. More
information is available from the product web site at the following
Remote exploitation of multiple buffer overflow vulnerabilities within
Motorola Inc.'s Timbuktu allows attackers to crash the service or
potentially execute arbitrary code with SYSTEM privileges.
The first issue exists within the handling of malformed application
level protocol requests. Certain requests lead to an arbitrary length
overflow of a buffer located on the heap.
The second vulnerability exists within the processing of log in
requests. By specifying an overly long user name, it is possible to
cause heap corruption.
The third vulnerability specifically exists within the "Scanner"
functionally. By running a malicious socket server on TCP port 407, an
attacker is able to cause a buffer overflow with a malformed "HELLO"
Exploitation of these vulnerabilities allows attackers to crash the
Timbuktu Pro server or potentially execute arbitrary code with SYSTEM
In all cases, no authentication credentials are required to access the
vulnerable code. In order to exploit the first two vulnerabilities, the
attacker needs only the ability to initiate a session with the Timbuktu
service. This service typically runs on TCP or UDP port 407.
The third vulnerability requires access to the local network since the
problem lies in the handling of a response from a scanned server.
Additionally, an attacker would need to persuade a user to attempt to
connect to the malicious server.
iDefense has confirmed the existence of these vulnerabilities within
version 184.108.40.2067 of Motorola Inc.'s Timbuktu Pro for Windows. Older
versions are suspected to be vulnerable.
Employing firewalls to limit access to the affected service's open ports
(TCP and UDP port 407) can help prevent potential exposure to these
VI. VENDOR RESPONSE
Motorola Inc. has addressed these vulnerabilities by releasing version
8.6.5 of Timbuktu Pro for Windows. For more information, consult the
release notes at the following URL.
VII. CVE INFORMATION
The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2007-4221 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org/), which standardizes names for
VIII. DISCLOSURE TIMELINE
07/18/2007 Initial vendor notification
07/19/2007 Initial vendor response
08/27/2007 Coordinated public disclosure
These vulnerabilities was reported to iDefense by Titon of BastardLabs
and two anonymous researchers.
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