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@Mail Webmail Attachment Upload Directory Traversal
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Secunia Advisory:
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SA18646
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Release Date:
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2006-02-02
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Last Update:
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2006-02-14
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Popularity:
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5,187 views
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Critical:
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Moderately critical
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Impact:
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System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | @Mail 4.x
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Subscribe:
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Instant alerts on relevant vulnerabilities 
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| CVE reference: | CVE-2006-0611
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Description:
Secunia Research has discovered a vulnerability in @Mail Webmail, which can be exploited by malicious users to compromise a vulnerable system.
The vulnerability is caused due to the lack of sanitisation of the "unique" parameter in compose.pl before using the value to construct a filename for saving an uploaded mail attachment. This can be exploited to upload files to arbitrary directories on the server with privileges of the web server via directory traversal attacks. The default installation of the Windows version runs the Apache web server with SYSTEM privileges.
Successful exploitation allows execution of arbitrary Perl code by e.g. uploading a Perl file into the webmail directory.
The vulnerability has been confirmed in version 4.3 and affects only the Windows version.
Solution:
The vendor has provided a source code patch (see vendor's original advisory).
A patch will be available for download by 2006-02-07.
Provided and/or discovered by:
Tan Chew Keong, Secunia Research.
Changelog:
2006-02-14: Added CVE reference.
Original Advisory:
CalaCode:
http://kb.atmail.com/view_article.php?num=374
Secunia Research:
http://secunia.com/secunia_research/2006-2/
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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.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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