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Digest Name: Daily Security Bulletins Digest
Created: Thu Jul 8 3:00:02 PDT 1999
Table of Contents:
Document ID Title
--------------- -----------
HPSBUX9907-100 CDE Leaves Current Directory in root PATH
The documents are listed below.
-------------------------------------------------------------------------------
Document ID: HPSBUX9907-100
Date Loaded: 19990707
Title: CDE Leaves Current Directory in root PATH
-------------------------------------------------------------------------
HEWLETT-PACKARD COMPANY SECURITY BULLETIN: #00100, 07 July 1999
-------------------------------------------------------------------------
The information in the following Security Bulletin should be acted upon
as soon as possible. Hewlett-Packard Company will not be liable for any
consequences to any customer resulting from customer's failure to fully
implement instructions in this Security Bulletin as soon as possible.
-------------------------------------------------------------------------
PROBLEM: The current directory is in the root user's PATH
after logging in using CDE.
PLATFORM: HP 9000 series 700/800 at hp-ux revision 10.X
DAMAGE: Increase in privledges.
SOLUTION: Modify /usr/dt/bin/Xsession until a patch is available.
AVAILABILITY: This advisory will be updated when patches are available.
-------------------------------------------------------------------------
I.
A. Background - The PATH environemnt variable is constructed from
several sources including dtsearchpath and scripts in
/etc/dt/config/Xsession.d/ and /usr/dt/config/Xsession.d/.
The resulting PATH contains the string "::" which will be
interpreted as the current directory. The root user should
not have the current directory in the PATH.
B. Fixing the problem - Since the PATH environment variable can be
affected by dtsearchpath and several scripts, the recommended
solution is to clean up the root user's PATH after is has been
created.
In /usr/dt/bin/Xsession just before this:
# ###########################################################################
#
# Startup section.
Add this:
###################### Clean up $PATH for root ##########################
if [ "$USER" = "root" ]
then
Log "Clean up PATH for root user"
Log "Old PATH = $PATH"
PATH=`echo $PATH | awk '
{
# Remove elements from PATH that are
# (a) "."
# (b) ""
# (c) blank
#
gsub (" ",":", $0) # Substitite ":" for each blank
n = split ($0, path, ":") # Split into elements with ":" as delimiter
first = 1 # To suppress leading ":" in new PATH
for (i=1; i<=n; i++) {
len = length(path[i])
dot = index(path[i], ".")
dot_only = 0
if ((len == 1) && (dot==1)) {
dot_only = 1
}
# print element if it is not "" and not "."
if (!(len==0) && !(dot_only==1)) {
if(first != 1) {
printf (":") # if not first element, print ":" in front
}
printf ("%s",path[i])
first = 0
}
}
}
END { printf ("\n") }'`
Log "New PATH = $PATH"
fi
###################### End - Clean up $PATH for root ####################
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________________________________________________________________________
-----End of Document ID: HPSBUX9907-100--------------------------------------
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