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wzdftpd Data Handling Denial of Service Vulnerability
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Secunia Advisory:
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SA23852
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Release Date:
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2007-01-22
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Last Update:
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2007-01-24
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Popularity:
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4,202 views
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Critical:
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Less critical
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Impact:
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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: | wzdftpd 0.x
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| CVE reference: | CVE-2007-0428
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Description:
Jose Miguel Esparza has discovered a vulnerability in wzdftpd, which can be exploited by malicious users to cause a DoS (Denial of Service).
The vulnerability is caused due to a NULL pointer dereference error within "chtbl_lookup()" when processing data sent by the user. This can be exploited to crash the service by sending certain whitespace characters (e.g. " ", "\r", "\n", "\t").
The vulnerability is confirmed in version 0.8.0. Other versions may also be affected.
Solution:
Grant access to trusted users only.
Provided and/or discovered by:
Jose Miguel Esparza, S21Sec
Changelog:
2007-01-24: Added CVE reference.
Original Advisory:
http://www.s21sec.com/avisos/s21sec-033-en.txt
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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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