Internet Explorer Vulnerability: Dec 13

Hiya

Cumulative Patch for IE

The first vulnerability involves a flaw in the handling of the
Content-Disposition and Content-Type header fields in an HTML.
stream. These fields, the hosting URL, and the hosted file data
determine how a file is handled upon download in Internet
Explorer. A security vulnerability exists because, if an
attacker altered the HTML header information in a certain way,
it could be possible to make IE believe that an executable file
was actually a different type of file -- one that it is
appropriate to simply open without asking the user for
confirmation. This could enable the attacker to create a web
page or HTML mail that, when opened, would automatically run an
executable on the user's system. This vulnerability affects
IE 6.0 only. It does not affect IE 5.5.

- The second vulnerability is a newly discovered variant of the
"Frame Domain Verification" vulnerability discussed in Microsoft
Security Bulletin MS01-015. The vulnerability could enable a
malicious web site operator to open two browser windows, one in
the web site's domain and the other on the user's local file
system, and to pass information from the latter to the former.
This could enable the web site operator to read, but not change,
any file on the user's local computer that could be opened in a
browser window. This vulnerabilty affects both IE 5.5 and 6.0.

- The third vulnerability involves a flaw related to the display
of file names in the File Download dialogue box. When a file
download is initiated, a dialogue provides the name of the file.
However, in some cases, it would be possible for an attacker to
misrepresent the name of the file in the dialogue. This could be
invoked from a web page or in an HTML email in an attempt to
fool users into accepting unsafe file types from a trusted
source. This vulnerabilty affects both IE 5.5 and 6.0.

http://www.microsoft.com/technet/treeview/default.asp?url=/technet/security/bulletin/ms01-058.asp

Regards

eddie