Description of problem:
Stack based buffer overflow occurs, when gnome-system monitor is launched
while process that has a file with too long filename mapped in its address
space (visible via /proc/$PID/maps), and could potentially lead to arbitrary
code execution (mitigated by SSP).
Version-Release number of selected component (if applicable):
At least FC6 and RHEL5 libgtop2.
Steps to Reproduce:
# Create a file with too long pathname. Some filesystems limit filenames
# to 255 characters, so use a deep directory hierarchy instead
export dir=$(perl -e " print 's/'x1000;")
mkdir -p $dir
# Copy a binary image thata will get mapped upon execution there and run it.
# Sleep will harmlessly run for some time...
cp /bin/sleep $dir
$dir/sleep 100 &
# Run system monitor while the program is running
*** stack smashing detected ***: gnome-system-monitor terminated
Gnome-system-monitor should help us on our way to salvation,
eternal and everlasting love and peace.
Patch from upstream is available, see the upstream BTS:
Created attachment 145571 [details]
Patch for Gnome bug #396477 libgtop buffer overflow
This flaw also affects FC5
Sandmann: Please push the updated package into FC6.