Re: OpenUNIX 8 & Unixware possible local root

From: Scott J (mrbinaryat_private)
Date: Thu Oct 04 2001 - 07:23:39 PDT

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    For whatever reason, it seems that AIX may not be
    vulnerable. This test performed on a stinky old E30
    133 MHz RS/6000, 512 MB "server" (more like a workstation
    now, and a wimpy one at that).  But it's the only
    thing I could get my hands on to try this exploit(?)  I was
    unable to get dtterm to segfault.
    This is AIX 4.3.3 with maintenance level of at least 6
    applied, more likely 7 or 8.
    It's a uniprocessor box: lslpp -ha bos.up returns 4.3.3.26
    applied & committed.
    Apologies to Bugtraqqers, I don't have time to try out the
    entire dt suite o' crap at the moment with
    the problems that have just cropped up.  See details below.
    
    myuseridat_private [/home/net/myuserid] [0]
    $ date
    date
    Thu Oct  4 08:58:33 EDT 2001
    
    myuseridat_private [/home/net/myuserid] [0]
    $ uname -a
    uname -a
    AIX ourhost01 3 4 00299A86C000
    
    myuseridat_private [/home/net/myuserid] [0]
    $ /usr/dt/bin/dtterm -tn `perl -e 'print "A"x23462'`
    /usr/dt/bin/dtterm -tn `perl -e 'print "A"x23462'`
    ksh: /usr/dt/bin/dtterm: arg list too long
    
    myuseridat_private [/home/net/myuserid] [126]
    $ /usr/dt/bin/dtterm -tn `perl -e 'print "A"x23461'`
    /usr/dt/bin/dtterm -tn `perl -e 'print "A"x23461'`
    
    myuseridat_private [/home/net/myuserid] [0]
    $ ls -al core
    ls -al core
    core not found
    
    myuseridat_private [/home/net/myuserid] [2]
    $ /usr/dt/bin/dtterm -tn `perl -e 'print "A"x23461'`
    /usr/dt/bin/dtterm -tn `perl -e 'print "A"x23461'`
    
    myuseridat_private [/home/net/myuserid] [0]
    $ ls -al core
    ls -al core
    core not found
    
    myuseridat_private [/home/net/myuserid] [2]
    $ /usr/dt/bin/dtterm -tn `perl -e 'print "A"x23461'`
    /usr/dt/bin/dtterm -tn `perl -e 'print "A"x23461'`
    
    myuseridat_private [/home/net/myuserid] [0]
    $ ls -al core                                       
    ls -al core
    core not found
    
    myuseridat_private [/home/net/myuserid] [2]
    $ 
    
    myuseridat_private [/home/net/myuserid] [2]
    $ ls -al /usr/dt/bin/dtterm
    ls -al /usr/dt/bin/dtterm
    -r-sr-xr-x   1 root     bin        40756 Jul 13 1999 
    /usr/dt/bin/dtterm
    
    Slán leat agus go n'eirí an bóthar leat.
    
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