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WinSCP Protocol Handler Command Line Switch Injection
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Secunia Advisory:
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SA20575
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Release Date:
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2006-06-12
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Last Update:
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2007-09-14
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Popularity:
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8,426 views
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Critical:
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Highly critical
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Impact:
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Manipulation of data
System access
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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: | WinSCP 3.x
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| CVE reference: | CVE-2006-3015
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Description:
Jelmer Kuperus has discovered a vulnerability in WinSCP, which can be exploited by malicious people to manipulate certain files on a user's system and potentially to compromise a vulnerable system.
The vulnerability is caused due to an error within the handling of the "scp://" and "sftp://" protocol handlers. This can be exploited to insert additional command line switches, potentially to cause WinSCP to append log entries to arbitrary files on the user's system, or to download files onto the user's system via a specially crafted URL.
Successful exploitation requires that the user is e.g. tricked into following a malicious link.
The vulnerability is confirmed in version 3.8.1 build 328. Other versions may also be affected.
Solution:
Upgrade to version 4.0.4.
http://winscp.net/eng/download.php
Provided and/or discovered by:
Jelmer Kuperus.
Changelog:
2006-06-20: Added CVE reference.
2006-06-21: Updated "Solution" section.
2007-09-14: Updated "Solution" section and set "Solution Status" to "Unpatched" based on additional information provided by Kender.Security.
Original Advisory:
http://winscp.net/eng/docs/history#4.0.4
http://lists.grok.org.uk/pipermail/full-disclosure/2006-June/046810.html
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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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