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The remote FTP server seems to be vulnerable to a remote buffer overflow.
This version of WU-FTPD contains a remote overflow if s/key support is enabled.
The skey_challenge function fails to perform bounds checking on the
name variable resulting in a buffer overflow.
With a specially crafted request, an attacker can execute arbitrary
code resulting in a loss of integrity and/or availability.
It appears that this vulnerability may be exploited prior to authentication.
It is reported that S/Key support is not enabled by default,
though some operating system distributions which ship WU-FTPD may have it
*** Nessus solely relied on the banner of the remote server
*** to issue this warning, so it may be a false positive.
See also :
Upgrade to WU-FTPD 2.6.3 when available or disable SKEY or apply the
patches available at http://www.wu-ftpd.org
Risk factor :
Critical / CVSS Base Score : 10.0
CVSS Temporal Score : 7.4
Public Exploit Available : false
Nessus Plugin ID: 14372 ()
Bugtraq ID: 8893
CVE ID: CVE-2004-0185
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