Dell TrueMobile 2300 Wireless Router Lets Remote Users Reset the Authentication Credentials
SecurityTracker Alert ID: 1015325|
SecurityTracker URL: http://securitytracker.com/id/1015325
(Links to External Site)
Date: Dec 7 2005
Modification of authentication information|
Vendor Confirmed: Yes Exploit Included: Yes |
Version(s): Dell TrueMobile 2300; 18.104.22.168 (dated 07/24/2003), 22.214.171.124 (dated 1/31/2004)|
iDEFENSE reported a vulnerability in the Dell TrueMobile 2300 wireless router. A remote user can bypass authentication.|
A remote user may be able to load the following page to reset the router's authentication credentials:
The system will request authentication credentials but the remote user can press 'cancel' to avoid having to provide authentication parameters.
The vendor was notified on November 17, 2005.
iDEFENSE reported this vulnerability.
The original advisory is available at:
A remote user can reset the authentication credentials.|
No solution was available at the time of this entry. The vendor does not plan to issue a fix, as a newer model that is not vulnerable is available.|
Vendor URL: www.dell.com/ (Links to External Site)
Source Message Contents
Subject: iDefense Security Advisory 12.07.05: Dell TrueMobile 2300 Wireless|
Dell TrueMobile 2300 Wireless Broadband Router Authentication Bypass Vulnerability
iDefense Security Advisory 12.07.05
December 7, 2005
The Dell TrueMobile 2300 Wireless Broadband Router is an 802.11b/g
wireless access point, wired ethernet switch and internet router. More
information can be found at the following URL:
Remote exploitation of a design error in Dell Inc.'s TrueMobile 2300
Wireless Router may allow an attacker to reset the authentication
The Dell TrueMobile 2300 is a wireless router and access point. By
requesting the following url from the router, it is possible to obtain
a page containing a form which allows you to reset the authentication
credentials. (The IP is typically 192.168.2.1, and [ROUTER IP] should
be replace by the router's actual address.)
Although dialog boxes for entering the username and password appear,
pressing cancel will not prevent this exploit from working.
Exploitation could allow remote attackers to associate with the
internal side of the router to change any configuration settings,
including uploading of new firmware.
The precise cause of the error is unknown. Although there is GPL
source code available for this product, the firmware's source code
version has not been kept up to date with the binary version. As a
result, it does not directly allow the cause of the vulnerability to
Based on analysis of the affected binary, /usr/sbin/httpd, and the
previous version of the source code it appears the cause is a logic
error involving the 'ClearLog' string being checked without first
ascertaining that the page was one where that made sense. Although
the binary appears to be largely the same code as the available source
code, there are many differences. In the binary version, the
authentication is not performed in the same order as in the source
version. It is likely that the determination of which pages to check
is now done on the basis of the 'action' variable, rather than the
previous method of using the page name.
iDefense has confirmed the existence of this vulnerability in the
following Dell TrueMobile 2300 firmware versions:
Previous versions of this may also be affected, however it is not
clear in which version the vulnerability was introduced.
In order to mitigate exposure to this vulnerability from remote
attackers, employ encryption on your wireless interface, or disable it
if it is not required. The exact settings to use are dependant on your
wireless security policy. This workaround does not prevent exploitation
from the local network via wired interfaces.
VI. VENDOR RESPONSE
"The vendor is no longer selling this product and has replaced it with
newer models that do not exhibit the defect. Therefore, a patch will not
be released to address this issue."
VII. CVE INFORMATION
The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2005-3661 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org), which standardizes names for
VIII. DISCLOSURE TIMELINE
11/17/2005 Initial vendor notification
11/18/2005 Initial vendor response
12/07/2005 Public disclosure
TNull is credited with the discovery of this vulnerability.
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