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Title: IE can Divulge Location of Cached Content
Date: 06 March 2001
Software: IE and Windows Scripting Host
Impact: Run code of attacker's choice. Three other
vulnerabilities, of lesser severity and exploitable in
more restricted circumstances, also are eliminated by
the patches.
Bulletin: MS01-015
Microsoft encourages customers to review the Security Bulletin at:
http://www.microsoft.com/technet/security/bulletin/MS01-015.asp.
The IE security architecture provides a caching mechanism that is
used to store content that needs to be downloaded and processed on
the user's local machine. The purpose of the cache is to obfuscate
the physical location of the cached content, in order to ensure that
the web page or HTML e-mail will work through the IE security
architecture to access the information. This ensures that the uses
of the information can be properly restricted.
A vulnerability exists because it is possible for a web page or HTML
e-mail to learn the physical location of cached content. Armed with
this information, an attacker could cause the cached content to be
opened in the Local Computer Zone. This would enable him to launch
compiled HTML help (.CHM) files that contain shortcuts to
executables, thereby enabling him to run the executables.
In addition to eliminating this vulnerability, the patches provided
below eliminate three other vulnerabilities that either pose
significantly less risk or could only be exploited in very
restricted situations:
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"AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL
WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY
DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL,
CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF
MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION
OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO
THE FOREGOING LIMITATION MAY NOT APPLY.
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