======================================================= HPUX dtmailpr buffer overflow vulnerability =======================================================
Davide Del Vecchio Adv#8
Discovered in: 14/07/2003 Date: 19/11/2003 Tested on HP-UX B.11.00
The dtmailpr program reads a filename (which contains one or more mail
messages from mailx or dtmail ), and sends the message to standard out
with headers abbreviated and attachments removed. If no filename argument
is provided dtmailpr reads from standard in.
dante@sofficino :/usr/dt/bin >ls -al /usr/dt/bin/dtmailpr -r-xr-sr-x 1 bin mail 339968 Sep 11 2001 dtmailpr
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/dtmailpr Memory fault
From gdb output we could see the program received signal SIGSEGV, and then it segfaults.
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.
Davide Del Vecchio would like to thank all the people supporting him and his research, Diego Fuggetta, Filippo Sismondo, Carlo Martini, Giorgio Vitelli, Davide Zanella, his love that never leaves him alone, and obvious, the HP-UX security staff, impersonified in this case by John Morris.
My sadness for the victims of the war in Iraq is as big as my desire to understand why this war started. Repose in peace.
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Please send suggestions, updates, and comments to: Davide Del Vecchio , Dante Alighieri - dante at alighieri dot org www.alighieri.org
Davide Del Vecchio "Dante Alighieri" firstname.lastname@example.org http://www.alighieri.org