Lucene search

K
securityvulnsSecurityvulnsSECURITYVULNS:DOC:1882
HistoryJul 27, 2001 - 12:00 a.m.

Security Bulletin MS01-042

2001-07-2700:00:00
vulners.com
28

Title: Windows Media Player .NSC Processor Contains Unchecked
Buffer
Date: 26 July 2001
Software: Windows Media Player 6.4, 7, and 7.1
Impact: Run code of attacker's choice.
Bulletin: MS01-042

Microsoft encourages customers to review the Security Bulletin at:
http://www.microsoft.com/technet/security/bulletin/MS01-042.asp.


Issue:

Windows Media Player provides support for audio and video streaming.
Streaming media channels can be configured by using Windows Media
Station (.NSC) files. An unchecked buffer exists in the functionality
used to process Windows Media Station files. This unchecked buffer
could potentially allow an attacker to run code of his choice on the
machine of another user. The attacker could either send a specially
malformed file to another user and entice her to run or preview it,
or
he could host such a file on a web site and cause it to launch
automatically whenever a user visited the site. The code could take
any action on the machine that the legitimate user himself could
take.

Mitigating Factors:

  • Customers who have applied the Outlook E-mail Security Update
    (OESU) for Outlook 2000 or are running Outlook XP, which has the
    OESU functionality built-in, are automatically protected against
    HTML e-mail based attempts to exploit this vulnerability.

  • For others not in the above categories, the attacker would have to
    entice the potential victim to visit a web site he controlled, or
    to
    open an HTML e-mail he had sent.

  • The attacker would need to know the specific operating system that
    the user was running in order to tailor the attack code properly;
    if
    the attacker made an incorrect guess about the user's operating
    system platform, the attack would crash the user's Windows Media
    Player session, but not run code of the attacker's choice.

Patch Availability:


THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED
"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.