OSEC

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From: neme-dhchushmail.com
Date: Wed Jun 06 2001 - 20:49:48 CDT

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     [ Advisory for Pragma InterAccess ]
     [ Pragma InterAccess is made by Pragma Systems ]
     [ Site: http://www.pragmasys.com ]
     [ by nemesystm of the DHC ]
     [ (http://dhcorp.cjb.net - neme-dhchushmail.com) ]
     [ ADV-0119 ]

    /-|=[explanation]=|-\
    Pragma InterAccess provides daemons like telnet,
    rexecd and rshd for the Windows environment. It is
    vulnerable to a denial of service.

    /-|=[who is vulnerable]=|-\
    Pragma InterAccess Release 4.0 Build 5
    has been tested and was vulnerable. Prior versions
    are assumed to be vulnerable as well.

    /-|=[testing it]=|-\
    Sending a burst of characters with a length of
    15000 to port 23 Interaccess will crash with:
    Telnet95 has caused an error to occur in
    telnet95.exe

    I have made a perl script that exploits this. It is
    in the advisory that is available on the DHC site.
    http://www.emc2k.com/dhcorp/homebrew/pragma.zip

    /-|=[fix]=|-\
    Install Pragma InterAccess Release 4.0 Build 6.
    Free, encrypted, secure Web-based email at www.hushmail.com