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MailSite Express Unauthorised Attachment Retrieval Vulnerability
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Secunia Advisory:
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SA9252
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Release Date:
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2003-07-14
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Popularity:
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5,541 views
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Critical:
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Less critical
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Impact:
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Exposure of sensitive information
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Where:
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From remote
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Solution Status:
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Unpatched
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| Software: | MailSite 5.x
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Description:
A vulnerability has been reported in MailSite Express, which can be exploited by malicious people to gain knowledge of sensitive information.
The vulnerability is caused due to an access control error allowing anyone (both unauthenticated people and authenticated users) to access any user's attachments. However, successful exploitation requires that the malicious person has knowledge of the path to an attachment, which is randomly generated.
Example:
http://[victim]/express/cache/DC44AEECB46AE0C029E85BBD43089833/411820066/attachment
This knowledge may eg. be gained by sniffing the traffic on a network or through other means.
The vulnerability has been reported in version 5.3.4. However, prior versions may also be affected.
Solution:
Make sure that only authenticated users can access the "express/" directory and sub directories.
However, authenticated users may still be able to access other users' attachments. If this is an unacceptable risk, then MailSite Express should not be used until an updated version or patch is available.
Provided and/or discovered by:
G00db0y (Zone-h)
Original Advisory:
http://www.zone-h.org/en/advisories/read/id=2643/
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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