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Kazaa Lite K++ K-Sig Directory Traversal Weakness
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Secunia Advisory:
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SA13879
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Release Date:
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2005-01-18
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Critical:
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Not critical
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Impact:
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Manipulation of data
DoS
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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: | Kazaa Lite K++ 2.x
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This advisory is currently marked as unpatched!
- Companies can be alerted when a patch is released! |
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Description:
Rafel Ivgi has discovered a weakness in Kazaa Lite K++, which can be exploited by malicious people to create or overwrite files on a user's system.
The included K-Sig KL Extension (KSig.exe) installs a "sig2dat://" URI handler. The weakness is caused due to an input validation error when processing the "File:" argument of "sig2dat://" URIs. This can be exploited via a directory traversal attack to create or overwrite .dat files in arbitrary locations on a user's system by e.g. tricking the user into visiting a malicious web site or follow a specially crafted link.
An error within the handling of the "Length" value was also reported, which crashes the K-Sig KL Extension with an EConvertError exception when processing an overly large value.
The weakness has been confirmed in Kazaa Lite K++ 2.4.3 with K-Sig 1.2.3 (Build 5). Other versions may also be affected.
Solution:
Remove the association for the "sig2dat://" URI handler. This may impact the functionality.
Provided and/or discovered by:
Rafel Ivgi
Original Advisory:
http://theinsider.deep-ice.com/texts/advisory70.txt
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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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