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atftp filename Buffer Overflow
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Secunia Advisory:
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SA8968
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Release Date:
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2003-06-09
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Popularity:
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5,362 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 local network
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Solution Status:
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Unpatched
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| Software: | atftp 0.x
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Description:
A vulnerability has been identified in atftp allowing malicious TFTP servers to cause a buffer overflow in atftp clients.
The problem is that atftp doesn't handle filenames longer than 253 characters correctly. This allows malicious TFTP servers to cause a buffer overflow which possibly could be exploited to execute arbitrary code.
An exploit is in the wild.
NOTE: The TFTP protocol is based on UDP making injection of arbitrary packets into the datastream and Man-in-the-Middle attacks trivial.
Solution:
Use a different TFTP client.
Provided and/or discovered by:
Discovered by Rick Patel
Further research by gz
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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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