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Date:      Fri, 16 Mar 2001 14:59:17 +0100
From:      Poul-Henning Kamp <phk@critter.freebsd.dk>
To:        lee@kechara.net
Cc:        freebsd-security@FreeBSD.ORG
Subject:   Re: Multiple vendors FTP denial of service (fwd) 
Message-ID:  <11549.984751157@critter>
In-Reply-To: Your message of "Fri, 16 Mar 2001 13:56:08 GMT." <200103161502.PAA16561@mailgate.kechara.net> 

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In message <200103161502.PAA16561@mailgate.kechara.net>, Lee Smallbone writes:
>4.2-RELEASE, regular user, regular home directory
>
>(snipped)
>
>/../www/62.49.139.3_3-year.png
>www/../www/../www/../www/../www/../www/../www/../www/../www/../www/../www/../www
>/../www/62.49.139.3_3.html
>www/../www/../www/../www/../www/../www/../www/../www/../www/../www/../www/../www
>/../www/btareshit.png
>www/../www/../www/../www/../www/../www/../www/../www/../www/../www/../www/../www
>/../www/62.49.139.3_3.old
>226 Transfer complete.
>ftp: 5740 bytes received in 0.11Seconds 52.66Kbytes/sec.
>ftp>

Now, try to create a 'foo' directory next to your 'www' directory...

--
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

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