mailing list archives
Best Buy Employee Toolkit Vulnerability
From: <cmthemc () yahoo com>
Date: 14 Aug 2003 21:43:01 -0000
Title: URL Parsing and Plain Text Password disclosure in Best Buy Employee
Provided by: cm`
Best Buy Employee Toolkit Interactive is a software program used
nationally by Best Buy Terminal Systems. The software allows employees the
ability to check multiple systems throughout the internal network. A URL
Parsing vulnerability in the configuration screen could allow an attacker
to execute a command shell interface and hijack certain network
connections or read plain-text passwords.
By pressing CTRL+SHIFT within the Employee Toolkit software and
clicking on the exit button, a logged in user is given access to the
Toolkit's configuration screen. An area within the configuration screen
allows a logged in user to enter a URL. There are no bounds checking on
what is entered in the URL area and an attacker could use this to execute
a local command shell or execute other programs locally stored.
-Plain-text Password Disclosure
Once an attacker has executed a local command shell, they then have
access to the root directory which houses a batch file that remotely
mounts the Store's central server. The batch file uses the 'net use'
command to map the server's drive and holds the password for the
administrator of the central server in plain text.
By combining the trickery of both the URL Parsing vulnerability and the
plain-text password disclosure an attacker could execute telnet to
remotely log into the central server as the administrator.
Finding the servers on the local area network is as easy as executing
the 'net view' command at command shell. Another method for finding these
servers is to open a page within the employee toolkit and pressing CTRL+P
to bring up the printing interface. Choose to print the text to a file
then click the network button. This will bring up all of the computers
connected to the Best Buy network.
05/05/2003 - Best Buy notified of vulnerability.
06/12/2003 - Best Buy coordinates with IBM to release a fix; Patch
06/12/2003 - Best Buy notified of patch ineffectivness, I was told
vulnerability was not a serious problem.
07/27/2003 - Best Buy notified again of vulnerability and its impact.
08/14/2003 - No Response from Best Buy.
08/14/2003 - Public Disclosure.
- Best Buy Employee Toolkit Vulnerability cmthemc (Aug 15)