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VULNERABILITY - May 12, 2004

by Marianna Schmudlach / May 12, 2004 1:31 AM PDT

Microsoft Outlook External Reference Vulnerability

CRITICAL:
Less critical

IMPACT:
Security Bypass

WHERE:
From remote

SOFTWARE:
Microsoft Office 2003 Student and Teacher Edition
Microsoft Office 2003 Standard Edition
Microsoft Office 2003 Small Business Edition
Microsoft Office 2003 Professional Edition
Microsoft Outlook 2003

DESCRIPTION:
http-equiv has reported a security issue in Microsoft Outlook,
potentially allowing malicious people (spammers) to verify if a
recipient has read an email.

Outlook 2003 is supposed to protect against objects being loaded from
external resources when reading emails. However, it is possible to
cause Outlook to load certain XML objects from external web servers.
This can be exploited to verify the existence of recipients, but may
also allow loading of content, which would be filtered by other email
filters.

This has been reported to affect Outlook 2003. Other versions may
also be affected by similar issues, however, they do not promise to
protect the users in the same way as Outlook 2003.

SOLUTION:
Filter HTML based emails.

PROVIDED AND/OR DISCOVERED BY:
http-equiv

http://secunia.com/advisories/11595/

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