[UNIX] AFTPd Core Dump Vulnerability
From: support@securiteam.comDate: 01/12/02
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From: support@securiteam.com To: list@securiteam.com Date: Sat, 12 Jan 2002 10:46:26 +0100 (CET)
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AFTPd Core Dump Vulnerability
------------------------------------------------------------------------
SUMMARY
When a vulnerable version of AFTPd is used under FreeBSD, other systems
might be also affected (AFTPd is not the offical FreeBSD FTP server), it
is possible to cause the program to core dump the memory by issuing a
special FTP change directory command. If the authentication mechanism is
accessed prior to the core dump, the password file will be found inside
the core dump.
DETAILS
Vulnerable systems:
AFTPd version 5.4.4 and prior
Issuing an authentication request (doen't have to be a valid one) followed
by the command: "cd ~" will cause the FTP server to crash, dumping the
memory file into the currently accessed directory. The core dump will
include the password file the FTP server has just accessed in order to
authenticate the user.
ADDITIONAL INFORMATION
The information has been provided by <mailto:nu_omega_tau@altavista.com>
Nu Omega Tau.
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