Hi,

I've found classical format bug while I was playing with HylaFAX
server (v4.1 beta2):

$ [ -u /usr/sbin/hfaxd ] && /usr/sbin/hfaxd -q '%n%n'    # SUID uucp
Segmentation fault

It crashes while calling syslog() with user supplied fmt. Looks nasty.

Sorry, I have no working exploit, I won't have one and I have no idea if
there are other similar bugs in HylaFAX. I just taught it will be nice to
bring this case to your attention, guys. Maybe someone, who has more time
than I have can do a little more research.


--
greets,

-= Marcin Dawcewicz =-         mailto: [EMAIL PROTECTED]
"When freedom is outlawed, only outlaws will be free"

Reply via email to