||Home : Advisories : Security hole in splitvt versions lower than 1.6.3|
||Security hole in splitvt versions lower than 1.6.3
||25th January 1996
splitvt versions lower than 1.6.3 are known to have a
security hole allowing a user to gain ROOT access on some systems!
If you have a version lower than 1.6.3 _please_ remove
the set-uid bit on your current version, and upgrade to the newer
version as soon as possible.
("splitvt -version" will tell you what version you are running)
The set-uid bit is only for updating the utmp database and for
changing ownership of its pseudo-terminals. It is not necessary
for splitvt's operation.
The latest version is available via anonymous ftp from
dandelion.ceres.ca.gov in the /pub/splitvt directory.
You can also get it from sunsite.unc.edu in /pub/Linux/Incoming
now, and will hopefully to be moved to /pub/Linux/utils/terminal.
The file is splitvt-1.6.3.tgz and it is in tarred and gzipped format.
The output of md5sum on the TAR file splitvt-1.6.3.tar is:
What it is:
Splitvt is a program that splits any vt100 compatible
screen into two - an upper and lower window in which you can run
two programs at the same time. Splitvt differs from screen in
that while screen gives you multiple virtual screens, splitvt splits
your screen into two fully visible windows. You can even use
splitvt with screen to provide multiple split screens. This can
be very handy when running over a modem, or for developing
What can I use it for?
Well, at this time, I am aware of several ways in which
people are using splitvt. Some people like to use it over the modem
to allow them more than one window at a time, others like to use it
in xterms because they prefer having everything on the screen at once,
and some people are using it in conjunction with the -rcfile option
to automate system administration tasks.
If you are using splitvt in a new and unusual way,
I'd like to hear about it!
Direct all comments to firstname.lastname@example.org
Will it run on my system?
Well, if you run a UNIX that has pseudo-tty support,
chances are that splitvt will work on your system. Splitvt has
been ported to all of the "standard" unices, and also to a few
oddball unices, such as AIX, NewsOS, MP-RAS, and NeXT.
Well, that about wraps it up. I hope you enjoy this software,
originally conceived by Dave Ljung and created by yours truly.
-Sam Lantinga (email@example.com)