[NEWS] URL Parsing and Plain Text Password disclosure in Best Buy Employee Toolkit Software
From: SecuriTeam (support_at_securiteam.com)
To: firstname.lastname@example.org Date: 24 Aug 2003 16:52:21 +0200
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URL Parsing and Plain Text Password disclosure in Best Buy Employee
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 that 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 ineffectiveness, 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.
The information has been provided by <mailto:email@example.com> cm`.
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