All SUSE operating system local initialization files must not execute world-writable programs.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-77225	SLES-12-010780	SV-91921r1_rule		Medium

Description
If user start-up files execute world-writable programs, especially in unprotected directories, they could be maliciously modified to destroy user files or otherwise compromise the system at the user level. If the system is compromised at the user level, it is easier to elevate privileges to eventually compromise the system at the root and network level.

STIG	Date
SLES 12 Security Technical Implementation Guide	2020-01-07

Details

Check Text ( C-76815r1_chk )
Verify that SUSE operating system local initialization files do not execute world-writable programs. For each home directory on the system make a list of files referenced within any local initialization script. Show the mode for each file and its parent directory. # FILES=".bashrc .bash_login .bash_logout .bash_profile .cshrc .kshrc .login .logout .profile .tcshrc .env .dtprofile .dispatch .emacs .exrc"; # for HOMEDIR in `cut -d: -f6 /etc/passwd\|sort\|uniq`;do for INIFILE in $FILES;do REFLIST=`egrep " [\"~]?/" ${HOMEDIR}/${INIFILE} 2>/dev/null\|sed "s/.\([~ \"]\/[\.0-9A-Za-z_\/\-]\)./\1/"`;for REFFILE in $REFLIST;do FULLREF=`echo $REFFILE\|sed "s:\~:${HOMEDIR}:g"\|sed "s:^\s::g"`;dirname $FULLREF\|xargs stat -c "dir:%a:%n";stat -c "file:%:%n" $FULLREF;done;done; done\|sort\|uniq If any local initialization file executes a world-writable program or script or a script from a world-writable directory, this is a finding.

Check Text ( C-76815r1_chk )

Verify that SUSE operating system local initialization files do not execute world-writable programs.

For each home directory on the system make a list of files referenced within any local initialization script. Show the mode for each file and its parent directory.

# FILES=".bashrc .bash_login .bash_logout .bash_profile .cshrc .kshrc .login .logout .profile .tcshrc .env .dtprofile .dispatch .emacs .exrc";

# for HOMEDIR in `cut -d: -f6 /etc/passwd|sort|uniq`;do for INIFILE in $FILES;do REFLIST=`egrep " [\"~]?/" ${HOMEDIR}/${INIFILE} 2>/dev/null|sed "s/.*$[~ \"]\/[\.0-9A-Za-z_\/\-]*$.*/\1/"`;for REFFILE in $REFLIST;do FULLREF=`echo $REFFILE|sed "s:\~:${HOMEDIR}:g"|sed "s:^\s*::g"`;dirname $FULLREF|xargs stat -c "dir:%a:%n";stat -c "file:%:%n" $FULLREF;done;done;
done|sort|uniq

If any local initialization file executes a world-writable program or script or a script from a world-writable directory, this is a finding.

Fix Text (F-83901r1_fix)
Remove the world-writable permission of files referenced by SUSE operating system local initialization scripts, or remove the references to these files in the local initialization scripts.