Article View: comp.security.misc
Article #108Advice on (potential?) security problem
From: Stephen J. Roznowski
Date: Fri, 07 Aug 1992 02:24
Date: Fri, 07 Aug 1992 02:24
20 lines
931 bytes
931 bytes
I'm busy looking for potential security holes in a suid root program.
Currently, the program does the following:
system("/bin/stty -echo ...");
Now, I realize that the "exec-ed" program also has to be "trusted",
or there is a security hole (i.e. If I can replace /bin/stty, all
bets are off).
Now suppose that I do "all the correct things" before issuing the
"system" call (set IFS, etc.) is this worse/same as the following:
tcgetattr(fd, &t);
t.c_lflag &= ~ECHO;
tcsetattr(fd, TCSANOW, &t);
Any insight is greatly appreciated.
--
Stephen J. Roznowski (sjr@afterlife.ncsc.mil)
Technical Details
Message-ID:
<1992Aug7.022422.9878@afterlife.ncsc.mil>Path:
arc1-ca.pugleaf.net!sparky!uunet!dtix!relay!afterlife!sjrShow Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!sparky!uunet!dtix!relay!afterlife!sjr From: sjr@afterlife.ncsc.mil (Stephen J. Roznowski) Newsgroups: comp.security.misc,alt.security Subject: Advice on (potential?) security problem Message-ID: <1992Aug7.022422.9878@afterlife.ncsc.mil> Date: 7 Aug 92 02:24:22 GMT Organization: The Great Beyond Lines: 20